Jorge Hirsch

Jorge E. Hirsch

Professor of physics
Department of Physics, University of California, San Diego
E-mail: jhirsch@ucsd.edu
Tel: 858-534-3931

Publications:
ResearcherId, Google Scholar, arXiv, Papers blocked by arXiv

* Comment on "Trapped flux in a small crystal of CaKFe₄As₄ ..." by S. L. Bud'ko et al
* Published: Further analysis of flux trapping experiments on hydrides under high pressure
* Talk at APS March meeting 2024: Can the public’s trust in science - and scientists - be restored?
* Talk at APS March meeting 2024: Data manipulation and non-availability in hydride superconductivity research
* How do you trust but verify hydride superconductivity?
* Talk: Fool’s gold, con men and hired guns: ... superconductivity in hydrides under pressure
* Published: Hysteresis loops in hydrides under high pressure: implications for superconductivity
* On the Author Correction to "Magnetic field screening in hydride superconductors"
* Comment on arXiv:2312.04495 by M. I. Eremets and coauthors
* Timeline of my involvement with CSH, the first room-temperature superconductor
* Talk at APS DPP 2023: Dynamics of the Meissner effect: how superconductors expel magnetic fields
* Published: Can linear transformations bend a straight line? Yes if hydrides are superconductors
* Published: On magnetic field screening and trapping in hydrides: unpulling the wool over readers' eyes
* Explanation for LK-99 levitation video from Huazhong University
* Explanation for "levitation at room temperature and atmospheric pressure"
* Talk: Ranga Dias and superconducting hydrides: a canary in the BCS gold mine
* Published: Perspective: Are hydrides under high pressure high temperature superconductors?
* Published: Electrical resistance of hydrides under pressure: evidence of superconductivity or confirmation bias?
* Published: Enormous variation in homogeneity...: a Comment on "Evidence of near-ambient superconductivity..."
* Published: Comment on "Carbon content drives high temperature superconductivity..."
* Virtual March Meeting 3/21/2023 PP10.00001: Should the American Physical Society be
more or less welcoming to analysis of underlying data? youtube video
* March Meeting 3/7/2023, K20.00014: Light and warm superconductors: fact or fiction? youtube video
* Published: On magnetic field screening and expulsion in hydride superconductors
* Published: Physica C paper "temporarily removed" in 2021.
* How to measure a voltage without going to the lab
* On "UDB_1" and "Measured Voltage" for CSH
* Webpage on "user-defined background" UDB_1
* Published: Room-T superconductivity - or not?
* Published: Incompatibility of published CSH data with measured raw data
* Published: EPL: no room T superconductivity in CSH

* Published: Perspective on Superconducting Materials
* Published: H₃S blown out of H₂O
* Published: Comment on tin-inside-H₃S Mossbauer experiment
* Published: Granular superconductivity in hydrides under pressure
* Published: Optical reflectance of sulfur hydride: no superconductivity
* Published: Faulty evidence for superconductivity in ac magnetic susceptibility of sulfur hydride under pressure
* Talk on Hot Hydride xOr Hole Superconductivity
* Talk on arXiv's censorship on room temperature superconductivity
* The real reason for arXiv's censorship (pdf)
* Analysis of CSH ac magnetic susceptibility raw data
* arXiv:2201.07686, with D. van der Marel censored by arXiv
* Comment on Dias-Salamat arXiv:2201.11883
* Reply to Dias-Salamat arXiv:2201.11883 censored by arXiv
* Extended version of arXiv:2201.07686 censored by arXiv
* arXiv:submit/4066666 censored by arXiv
* arXiv:submit/4062867 censored by arXiv
* Published: Hole Superconductivity xOr Hot Hydride Superconductivity censored by arXiv
* Published: Clear evidence against superconductivity in hydrides under high pressure
* On the ac magnetic susceptibility of a room temperature superconductor
Matters Arising in Hydrides (8/25/2021)
Hydrides Feeling the Pressure (8/26/2021)
Undeclared access restrictions (8/30/2021)
Breakthrough or bust? (10/22/2021)

Flux trapping in hydrides?

Diamagnetism in hydrides??
Meissner effect in hydrides??
Nonstandard superconductivity in hydrides?
Absence of superconductivity in hydrides
Absence of superconductivity in europium and a hydride

Theory of hole superconductivity
BOOK: Superconductivity begins with H
Superconductivity, What the H?
Joule heating in the N-S transition
Inconsistency of BCS theory
Alfven's theorem and the Meissner effect
BOOK: La Superconductividad bien entendida...
Superconducting materials: the whole story
Moment of inertia of superconductors
Spinning superconductors and ferromagnets
Why only hole conductors can be superconductors
Explanation of the Meissner effect
Momentum of superconducting electrons
Materials and mechanisms of hole superconductivity
The Bohr superconductor
H₂S is not BCS
The London moment
Dynamic Hubbard model
Mean inner potential, diamagnetism and superconductivity
Kinetic energy driven charge expulsion...
Kinetic energy driven superfluidity...
Kinetic energy driven superconductivity...                               Physica C Special Issue on Superconducting Materials
Kinetic energy driven ferromagnetism...                                   Vol. 514 (2015)
Double-valuedness of the electron wave function ...                Introduction and overview: pdf with links to papers
... rotational zero-point motion of electrons in rings                Table of Contents (pdf) with links to papers
Spin-split states in aromatic molecules and superconductors
Electromotive forces and the Meissner effect puzzle
Spin Meissner effect, and electrodynamics of superconductors
Do superconductors violate Lenz's law?
What about angular momentum conservation?
What about BCS theory? Phys. Scr. 80 (2009) 035702
Meissner effect puzzle

h-alpha index
hbar index
Does the h-index have predictive power ?
PNAS 104, 19187 (2007)
Link to h-index paper, PNAS 102, 16569 (2005)
Spin Hall Effect and spin current papers:
Phys.Rev.Lett.83, 1834 (1999), cond-mat/9906160 (1999),
Phys.Rev.B 60, 14787 (1999), cond-mat/9910408 (1999)
Spin currents in superconductors, Phys. Rev. B 71, 184521 (2005)
APS Outstanding Referees
Physics 2D

Brief description of research interests
We are interested in learning about the microscopic mechanisms that lead to the occurrence of collective effects in solids such as superconductivity and ferromagnetism. We believe that the essential physics of these phenomena is likely to be contained in simple models, even if the materials where these phenomena occur are very complicated. Once a plausible model is identified, we study it using various analytic and/or numerical techniques to learn about its properties and compare with experimental observations. For example we have recently introduced a new class of model Hamiltonians, 'dynamic Hubbard models' , to describe correlated electrons in solids. We have discovered that holes are not like electrons and that superconductivity in solids is intimately tied to the fundamental asymmetry between electrons and holes, because it originates in the undressing of antibonding electrons upon pairing , and are studying the consequences of this for optical, tunneling, and other experiments. We have recently found that the conventional BCS-London theory of superconductivity cannot explain the ubiquitous Meissner effect in superconductors. These findings imply that BCS theory is incorrect and that London theory is incorrect and that a superconductor is a giant atom. We have also proposed a new way to understand metallic ferromagnetism in solids, and that superconductivity and ferromagnetism have key physics in common. We are interested in kinetic energy driven superconductivity and superfluidity , and in the physics of spin currents in metals, superconductors, and molecules. We have proposed that the conventional 'Hall effect', the transverse voltage that is observed when a current circulates in an external magnetic field, should have as counterpart a 'spin Hall effect', involving the electron spin degrees of freedom. Similarly, we have proposed that the conventional Meissner effect, the spontaneous generation of a charge current near the surface of a superconductor in the presence of an external magnetic field, has as counterpart (so far undetected) a 'spin Meissner effect', the spontaneous generation of a spin current near the surface of a superconductor in the presence of an internal electric field.

Recent and upcoming talks

Selected Publications of J.E. Hirsch:
Hole Superconductivity and the High-Tc Oxides. With F. Marsiglio , Phys. Rev. B41, 6435 (1990).
Spin-Split States in Metals. Phys. Rev. B 41, 6820 (1990).
Weak Ferromagnetism in a Band Model: Application to Sc3In. Phys. Rev. B 44, 675 (1991).
Electron-hole asymmetry: the key to superconductivity , in "High-Temperature Superconductivity", ed. by J. Ashkenazi et al, Plenum Press, New York, 1991, p.295.
Apparent violation of the conductivity sum rule in certain superconductors, Physica C199, 305 (1992).
Superconductors that Change Color when they Become Superconducting. Physica C201, 347 (1992).
Superconductivity in the Transition Metal Series. With X.Q. Hong., Phys. Rev. B 46, 14702 (1992).
Color change and other unusual spectroscopic features predicted by the model of hole superconductivity , J. Phys. Chem. Solids 54, 1101 (1993).
Polaronic superconductivity in the absence of electron-hole symmetry. Phys. Rev. B47, 5351 (1993).
Thermoelectric Power of Superconductive Tunnel Junctions. Phys. Rev. Lett. 72, 558 (1994).
Electron-hole asymmetric polarons , in "Polarons and Bipolarons in high Tc Superconductors and Related Materials", ed. by E.K.H. Salje, A.S. Alexandrov and W.Y. Liang, Cambridge Unive rsity Press, Cambridge, 1995, p. 234.
Pairing in a tight binding model with occupation-dependent hopping rate: exact diagonalization study. With H.Q. Lin , Phys. Rev. B 52, 16155 (1995).
Metallic ferromagnetism in a single-band model: Effect of band filling and Coulomb interactions. With J.C. Amadon. Phys. Rev. B 54, 6364 (1996).
Possible contribution of direct exchange to the superfluidity of 3He. Phys. Rev. B 55, 8997 (1997).
Correlations between normal-state properties and superconductivity. Phys. Rev. B 55, 9007 (1997).
Metallic ferromagnetism in a band model: intra-atomic versus interatomic exchange Phys. Rev. B 56, 11022(1997).
Thermoelectric effect in superconductive tunnel junctions Phys. Rev. B 58, 8727 (1998)
Metallic ferromagnetism from kinetic-energy gain: The case of EuB6 Phys. Rev. B 59, 436 (1999)
Metallic ferromagnetism without exchange splitting Phys. Rev. B 59, 6256 (1999)
Slope of the superconducting gap function in $Bi_2Sr_2CaCu_2O_{8+\delta}$ measured by vacuum tunneling spectroscopy Phys. Rev. B 59 , 11962 (1999).
Spin Hall effect Phys. Rev. Lett. 83 , 1834 (1999).
Overlooked contribution to the Hall effect in ferromagnetic metals Phys.Rev.B 60, 14787 (1999)
Where is 99% of the condensation energy of Tl_2Ba_2CuO_y coming from? With F. Marsiglio , cond-mat/9908322, Physica C 331, 150 (2000).
Optical sum rule violation, superfluid weight and condensation energy in the cuprates With F. Marsiglio , cond-mat/0004496, Phys. Rev. B 62, 15131 (2000).
Anisotropic penetration depth and optical sum rule violation in La2-xSrxCuO4 With F. Marsiglio , cond-mat/0005002, presented at the 6th International Conference on Materials and Mechanisms of Superconductivity, Houston, February 2000, Physica C 341-348, 2217 (2000).
Hole superconductivity from kinetic energy gain ,cond-mat/0005033, presented at the 6th International Conference on Materials and Mechanisms of Superconductivity, Houston, February 2000, Physica C 341-348, 213 (2000).
Superconductivity and Ferromagnetism from Effective Mass Reduction , cond-mat/0007453, presented at the 6th International Conference on Materials and Mechanisms of Superconductivity, Houston, February 2000, Physica C 341-348, 211 (2000).
Superconductivity from Undressing , cond-mat/0007115, Phys.Rev.B 62, 14487 (2000)
Superconductivity from Undressing. II. Single Particle Green's Function and Photoemission in Cuprates , cond-mat/0007328, Phys.Rev.B 62, 14498 (2000)
Ferromagnetism from Undressing , cond-mat/0007454, Phys.Rev.B 62, 14131 (2000)
Consequences of charge imbalance in superconductors within the theory of hole superconductivity , cond-mat/0012517, Phys.Lett.A 281, 44 (2001)
Superconductivity from Hole Undressing , cond-mat/0102136, Physica C 364-365, 37 (2001). Presented at the Third International Conference on New Theories, Discoveries, and Applications of Superconductors and Related Materials (New3SC-3), Hawaii, January 2001.
Hole Superconductivity in $Mg B_2$: a high $T_c$ cuprate without Cu , cond-mat/0102115 , Phys. Lett. A282, p.392-398 (2001).
Electron-Phonon or Hole Superconductivity in $MgB_2$? , With F. Marsiglio , cond-mat/0102479 (2001), Phys.Rev. B 64, 144523 (2001).
Hole Superconductivity in MgB_2, Cuprates, and Other Materials , cond-mat/0106310 (2001) , , in "Studies of High Temperature Superconductors", ed. by A. Narlikar, Nova Sci. Pub., New York, Vol. 38, p. 49 (2002).
Comment on "Discovery of microscopic electronic inhomogeneity in the high-$T_c$ superconductor $Bi_2Sr_2CaCu_2O_{8+x}$", cond-mat/0107347 , cond-mat/0107372 (2001).
Dynamic Hubbard Model , Phys. Rev. Lett. 87, 206402 (2001).
Why holes are not like electrons: A microscopic analysis of the differences between holes and electrons in condensed matter , Phys.Rev. B 65, 184502 (2002), cond-mat/0109385 (2001).
Quantum Monte Carlo and exact diagonalization study of a dynamic Hubbard model , cond-mat/0201005 (2002), Phys.Rev. B65, 214510 (2002).
The True Colors of Cuprates , Science 295, 2226 (2002)
Quasiparticle undressing in a dynamic Hubbard model: exact diagonalization study , cond-mat/0205006 (2002), Phys.Rev. B66, 064507 (2002).
Electronic dynamic Hubbard model: exact diagonalization study , cond-mat/0207369 (2002), Phys.Rev. B67, 035103 (2003).
Quasiparticle undressing: a new route to collective effects in solids , cond-mat/0211642 (2002), in "Concepts in Electron Correlation", ed. by A.C. Hewson and V. Zlatic, Kluwer Academic Publishers, Dordrecht, 2003, p. 371.
Electron-hole asymmetry and superconductivity , cond-mat/0211643, Phys.Rev.B 68, 012510 (2003).
Electron-hole asymmetry is the key to superconductivity , cond-mat/0301610, New3SC-4 meeting, San Diego, Jan. 16-21 2003, Int. J. Mod. Phys. B 17, 3236 (2003).
Superconductors as giant atoms predicted by the theory of hole superconductivity , cond-mat/0301611 , Phys.Lett.A 309, 457 (2003).
Spontaneous spinning of a magnet levitating over a superconductor , with D.J. Hirsch, cond-mat/0303574 (2003), Physica C398, 8 (2003).
The Lorentz force and superconductivity , cond-mat/0305542, Phys.Lett.A 315, 474 (2003).
Superconductors as giant atoms: qualitative aspects , cond-mat/0305574 (2003), AIP Conf. Proc. 695(1) 21 (17 Dec 2003).
Charge expulsion and electric field in superconductors , cond-mat/0308604, Phys.Rev. B 68, 184502 (2003).
Dynamic Hubbard Model: Effect of Finite Boson Frequency , F. Marsiglio, R. Teshima, JEH, cond-mat/0307594 (2003), Phys.Rev. B 68, 224507 (2003).
Predicted electric field near small superconducting ellipsoids , cond-mat/0312618 (2003), Phys.Rev.Lett. 92, 016402 (2004).
Electrodynamics of superconductors , cond-mat/0312619 (2003), Phys.Rev. B 69, 214515 (2004).
Spin currents in superconductors , cond-mat/0406489 (2004), Phys.Rev. B 71, 184521 (2005).
The fundamental role of charge asymmetry in superconductivity , cond-mat/0407642 (Los Alamos), J. Phys. Chem. Solids 67, p.21 (2006), SNS'2004, Sitges,Spain, July 11-16,2004.
Reply to ``Comment on `Charge expulsion and electric field in superconductors' '', by T. Koyama , cond-mat/0412091 (2004), Phys.Rev. B 70, 226504 (2004).
Why holes are not like electrons. II. The role of the electron-ion interaction. , Phys.Rev.B 71, 104522 (2005), cond-mat/0504013 (2005).

Explanation of the Tao effect , cond-mat/0502626 (2005) , Phys.Rev.Lett. 94, 187001 (2005).
An index to quantify an individual's scientific output , physics/0508025 (2005), Proc Natl Acad Sci USA 102, 16569 (2005).
Spin currents, relativistic effects and the Darwin interaction in the theory of hole superconductivity , cond-mat/0508471 (2005), Phys.Lett. A 345, 453 (2005)
The fundamental role of charge asymmetry in superconductivity, Jour. Phys. Chem. Solids 67, 21 (2006).
Ionizing radiation from superconductors in the theory of hole superconductivity, J. Phys. Cond. Matter 19, 125217 (2007).
Do superconductors violate Lenz's law? Body rotation under field cooling and theoretical implications, Phys.Lett. A366, 615 (2007).
Does the h-index have predictive power? , arXiv:0708.0646 (2007), Proc Natl Acad Sci USA 104, 19193 (2007).
Spin Meissner Effect in Superconductors and the Origin of the Meissner Effect , arXiv:0710.0876 (2007), Europhys. Lett. 81, 67003 (2008).
Electrodynamics of spin currents in superconductors , arXiv:0803.1198 (2008), Ann. Phys. (Berlin) 17, 380 (2008).
The missing angular momentum of superconductors , arXiv:0803.2054, (2008), J. Phys. Cond. Matt. 20, 235233 (2008).
Hole superconductivity in Arsenic-Iron compounds . With F. Marsiglio , arXiv:0804.0002, (2008), doi:10.1016/j.physc.2008.05.051, Physica C 468, 1047 (2008).
Charge expulsion, Spin Meissner effect, and charge inhomogeneity in superconductors , arXiv:0810.5127, (2008), Journal of Superconductivity and Novel Magnetism 22, 131 (2009).
Why holes are not like electrons. III. How holes in the normal state turn into electrons in the superconducting state, arXiv:0901.3612 (2009), Int. J. Mod. Phys. B 23, 3035 (2009), Erratum.
BCS theory of superconductivity: it is time to question its validity, Physica Scripta 80 (2009) 035702.
Explanation of the Meissner Effect and Prediction of a Spin Meissner Effect in Low and High $T_c$ Superconductors, Physica C 470, S955 (2010).
Why non-superconducting metallic elements become superconducting under high pressure. With J.J. Hamlin, Physica C 470, S937 (2010).
Electromotive forces and the Meissner effect puzzle, Journal of Superconductivity and Novel Magnetism 23, 309 (2010) dx.doi.org/10.1007/s10948-009-0531-4.
A new basis set for the description of electrons in superconductors , Physics Letters A 373, 1880 (2009) dx.doi.org/doi:10.1016/j.physleta.2009.03.058.
Why holes are not like electrons. IV. Hole undressing and spin current in the superconducting state , Int. Jour. Mod. Phys. B 24, 3627 (2010), arXiv 1002.2688.
Hole core in superconductors and the origin of the Spin Meissner effect, Physica C 470, 635 (2010) dx.doi.org/10.1016/j.physc.2010.06.005.
Spin-split states in aromatic molecules and superconductors, arXiv:1007.2813, Phys. Lett. A 374, 3777 (2010).
Double-valuedness of the electron wave function and rotational zero-point motion of electrons in rings, arXiv:1007.2834, Mod. Phys. Lett. B 24, 2201 (2010).
Kinetic energy driven superconductivity, the origin of the Meissner effect, and the reductionist frontier, arXiv:1103.3912 (2011), Int. J. Mod. Phys. B 25, 1173 (2011).
Materials and mechanisms of hole superconductivity, arXiv:1104.1624 (2011), Physica C 472, 78 (2012).
Meissner effect, Spin Meissner effect and charge expulsion in superconductors , arXiv:1106.5311 (2011), J. Sup. Nov. Mag. 26, 2239 (2013) .
Did Herbert Fröhlich predict or postdict the isotope effect in superconductors? , arXiv:1108.3835 (2011), Physica Scripta 84, 045705 (2011).
Kinetic energy driven superconductivity and superfluidity , arXiv:1109.0504 (2011), Mod. Phys. Lett. B 25, 2219 (2011).
The origin of the Meissner effect in new and old superconductors , arXiv:1201.0139 (2011), Physica Scripta 85, 035704 (2012).
Experimental consequences of predicted charge rigidity of superconductors, arXiv:1201.0139, Physica C 478, 42 (2012).
Correcting 100 years of misunderstanding: electric fields in superconductors, hole superconductivity, and the Meissner effect, arXiv:1202.1851, J Supercond Nov Magn 25, 1357 (2012).
Spherical agglomeration of superconducting and normal microparticles with and without applied electric field, R.S.B. Ghosh and J.E. Hirsch, arXiv:1207.3773, Phys. Rev. B 86, 054511 (2012).
Kinetic energy driven superfluidity and superconductivity and the origin of the Meissner effect, arXiv:1210.1578 (2012), Physica C 493, 18 (2013) .
Prediction of unexpected behavior of the mean inner potential of superconductors, arXiv:1301.4999, Physica C 490, 1 (2013) .
Dynamic Hubbard model: kinetic energy driven charge expulsion, charge inhomogeneity, hole superconductivity, and Meissner effect, arXiv:1302.4178 (2013), Physica Scripta 88, 035704 (2013) .
Apparent increase in the thickness of superconducting particles at low temperatures measured by electron holography, arXiv:1303.2710 (2013), Ultramicroscopy 133, 67-71 (2013) .
Charge expulsion, charge inhomogeneity and phase separation in dynamic Hubbard models , arXiv:1307.6526, Phys. Rev. B 87, 184506 (2013) .
Superconductivity, diamagnetism, and the mean inner potential of solids, arXiv:1307.4438 (2013), Annalen der Physik 526, 63 (2014).
The London moment: what a rotating superconductor reveals about superconductivity , arXiv:1310.3834 (2013), Physica Scripta 89, 015806 (2014).
Dynamic Hubbard model for solids with hydrogen-like atoms, arXiv:1406.7332 (2014), Phys. Rev. B90, 104505 (2014).
Effect of orbital relaxation on the band structure of cuprate superconductors and implications for the superconductivity mechanism, arXiv:1407.0042 (2014), Phys. Rev. B90, 184515 (2014).
Proposed experimental test of an alternative electrodynamic theory of superconductors, arXiv:1409.0869 (2014), Physica C 508, 21 (2015) .
Hole superconductivity in H2S and other sulfides under high pressure, with F. Marsiglio, arXiv:1412.6251 (2014), Physica C 511, 45 (2015).
Absence of Josephson coupling between certain superconductors, arxiv: 1502.07059 (2015), Europhys. Lett. 109, 67005 (2015).

Dynamics of the normal-superconductor phase transition and the puzzle of the Meissner effect , arxiv: 1504.05190 (2015), Annals of Physics 362, 1 (2015).
On the dynamics of the Meissner effect, arxiv: 1508.03307 (2015), Physica Scripta 91, 035801 (2016).
The Bohr superconductor, arxiv: 1512.05014 (2015), Europhys. Lett. 113, 37001 (2016).
The disappearing momentum of the supercurrent in the superconductor to normal phase transformation, arxiv:1604.03565 (2016), Europhys. Lett. 114, 57001 (2016) .
On the reversibitity of the Meissner effect and the angular momentum puzzle, arXiv:1604.07443 (2016), Annals of Physics 373, 230 (2016) .
Proposed experimental test of the theory of hole superconductivity, Physica C 525, 44 (2016).
What is the speed of the supercurrent in superconductors?, arXiv:1605.09469 (2016).
Corrigendum on "On the dynamics of the Meissner effect", arXiv:1609.06299 (2016), Physica Scripta 91, 099501 (2016).
Momentum of superconducting electrons and the explanation of the Meissner effect, arXiv:1609.08451 (2016), Phys. Rev. B 95, 014503 (2017).
Entropy generation and momentum transfer in the superconductor-normal and normal-superconductor phase transformations and the consistency of the conventional theory of superconductivity, arxiv: 1703.04404 (2017), Int. J. Mod. Phys. Vol. 32, 1850158 (2018).
Why only hole conductors can be superconductors, Proc. SPIE 10105, Oxide-based Materials and Devices VIII, 101051V (March 7, 2017), arXiv:1703.09777.
Towards an understanding of hole superconductivity, Springer Series in Materials Science 255, 99 (2017)----- arXiv:1704.07452
Spinning Superconductors and Ferromagnets, Acta Physica Polonica A 133, 350 (2018)
Moment of inertia of superconductors, arXiv:1808.02857 (2018), Physics Letters A 383, 83 (2019)
Defying inertia: how rotating superconductors generate magnetic fields, arXiv:1812.06780 (2018), Annalen der Physik (2019).
Understanding electron-doped cuprate superconductors as hole superconductors , with F. Marsiglio, arXiv:1904.09164 (2019), Physica C 564, 29 (2019)
Hole superconductivity in infinite-layer nickelates , with F. Marsiglio, arXiv:1909.00509 (2019), Physica C 566, 1353534 (2019)
Alfven-like waves along normal-superconductor phase boundaries , arXiv:1906.03083 (2019), Physica C 564, 42 (2019)
Thermodynamic inconsistency of the conventional theory of superconductivity, arXiv:1907.11273 (2019), IJMPB (2020)))
Superconducting materials: the whole story, arXiv:1908.04419 (2019), J Supercond Nov Magn (2019).
How Alfven's theorem explains the Meissner effect, arXiv:1909.11443 (2019), MPLB (2020).
Inconsistency of the conventional theory of superconductivity, arXiv:1909.12786 (2019), EPL 130, 17006 (2020).
Joule heating in the normal-superconductor phase transition in a magnetic field, arXiv:2001.07509 (2020).
Absence of high temperature superconductivity in hydrides under pressure , with F. Marsiglio, arXiv:2010.10307 (2020).
About the Pressure-Induced Superconducting State of Europium Metal at Low Temperatures, arXiv:2012.07537 (2020), Physica C 583, 1353805 (2021).
Nonstandard superconductivity or no superconductivity in hydrides under high pressure , with F. Marsiglio, arXiv:2012.12796 (2020).
Meissner effect in nonstandard superconductors , with F. Marsiglio, arXiv:2101.01701 (2021), Physica C (2021).
Absence of magnetic evidence for superconductivity in hydrides under high pressure, with F. Marsiglio, arXiv:2103.00701 (2021).
Flux trapping in superconducting hydrides under high pressure , with F. Marsiglio, arXiv:2104.03925 (2021), Physica C (2021).
Magnetic flux expulsion in a superconducting wire, arXiv:2106.00262 (2021), Physics Letters A 413, 127592 (2021).
Hole Superconductivity xOr Hot Hydride Superconductivity, arXiv on hold (2021).

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