The fundamental role of charge asymmetry in superconductivity

Abstract

Neither BCS theory nor London theory contain any charge asymmetry. However it is an experimental fact that a rotating superconductor always exhibits a magnetic field parallel, never antiparallel, to its angular velocity. This and several other experimental observations point to a special role of charge asymmetry in superconductivity, which is the foundation of the theory of hole superconductivity. The theory describes heavy dressed {\it positive} hole carriers in the normal state that undress by pairing and become light undressed {\it negative} electron carriers in the superconducting state. Superconductivity is driven by kinetic energy lowering rather than by electron-phonon coupling as in BCS. In quantum mechanics, kinetic energy lowering is associated with $expansion$ of the electronic wave function, and hence we predict: (1) Superconductors expel $negative$ charge from their interior which consequently becomes $positively$ charged; (2) Macroscopic electrostatic fields exist in the interior of superconductors always, and in certain cases also outside near the surface; (3) Macroscopic spin currents exist in the superconducting state; (4) Superconductors are 'rigid' with respect to their response to applied longitudinal electric fields. These predictions apply to all superconductors and are testable but are as yet untested. The theory predicts highest $T_c$'s for materials for which normal state transport occurs through $(positive)$ holes in $negatively$ charged anions.

arXiv commentPresented at SNS'2004, Sitges,Spain, July 11-16,2004, being considered for publication in Jour.Phys.Chem.Solids

References in corpus (20)

• Universal Intrinsic Spin-Hall Effect
• Dissipationless Quantum Spin Current at Room Temperature
• Detection and Implications of a Time-reversal breaking state in underdoped Cuprates
• Coherent quasiparticle weight and its connection to high-T_c superconductivity from angle-resolved photoemission
• Pairing in cuprates from high energy electronic states
• Electrodynamics of superconductors
• Charge expulsion and electric field in superconductors
• Dynamic Hubbard Model
• Why holes are not like electrons: A microscopic analysis of the differences between holes and electrons in condensed matter
• Quasiparticle Liquid in the Highly Overdoped Bi2212
• Superconductivity from Undressing
• The Lorentz force and superconductivity
• Overlooked Contribution to the Hall Effect in Ferromagnetic Metals
• Consequences of charge imbalance in superconductors within the theory of hole superconductivity
• Electron-hole asymmetry and superconductivity
• Superconductors as giant atoms predicted by the theory of hole superconductivity
• Superconductivity from Undressing. II. Single Particle Green's Function and Photoemission in Cuprates
• Predicted electric field near small superconducting ellipsoids
• Spin currents in superconductors
• Dynamic Hubbard Model: Effect of Finite Boson Frequency

Cited by in corpus (25)

• BCS theory of superconductivity: the world's largest Madoff scheme?
• The origin of the Meissner effect in new and old superconductors
• Spin Meissner Effect in Superconductors and the Origin of the Meissner Effect
• The missing angular momentum of superconductors
• The London moment: what a rotating superconductor reveals about superconductivity
• Hole superconductivity in Arsenic-Iron compounds
• Do superconductors violate Lenz's law? Body rotation under field cooling and theoretical implications
• Kinetic energy driven superconductivity, the origin of the Meissner effect, and the reductionist frontier
• Materials and mechanisms of hole superconductivity
• Spin-split states in aromatic molecules and superconductors
• Hole core in superconductors and the origin of the Spin Meissner effect
• Dynamics of the normal-superconductor phase transition and the puzzle of the Meissner effect
• Structural matters in HTSC; the origin and form of stripe organization and checker boarding
• Dynamic Hubbard model: kinetic energy driven charge expulsion, charge inhomogeneity, hole superconductivity, and Meissner effect
• Effect of orbital relaxation on the band structure of cuprate superconductors and implications for the superconductivity mechanism
• Superconductivity, diamagnetism, and the mean inner potential of solids
• Defying inertia: how rotating superconductors generate magnetic fields
• Meissner effect, Spin Meissner effect and charge expulsion in superconductors
• Prediction of unexpected behavior of the mean inner potential of superconductors
• Experimental consequences of predicted charge rigidity of superconductors
• Pair production and ionizing radiation from superconductors
• Apparent increase in the thickness of superconducting particles at low temperatures measured by electron holography
• Why holes are not like electrons. IV. Hole undressing and spin current in the superconducting state
• Spherical agglomeration of superconducting and normal microparticles with and without applied electric field
• Absence of Josephson coupling between certain superconductors