Electron-hole asymmetry is the key to superconductivity

Details Electron-hole asymmetry is the key to superconductivity Electron-hole asymmetry is the key to superconductivity

2003-01-30

arxiv.org/abs/cond-mat/0301610v2

Int. J. Mod. Phys. B 17, 3236 (2003)

Physics

Condensed Matter

Superconductivity

Presented at the New3SC-4 meeting, San Diego, Jan. 16-21 2003; to be published in Int. J. Mod. Phys. B

Scientific paper

10.1142/S021797920302079X

In a solid, transport of electricity can occur via negative electrons or via positive holes. In the normal state of superconducting materials experiments show that transport is usually dominated by $dressed$ $positive$ $hole$ $carriers$. Instead, in the superconducting state experiments show that the supercurrent is always carried by $undressed$ $negative$ $electron$ $carriers$. These experimental facts indicate that electron-hole asymmetry plays a fundamental role in superconductivity, as proposed by the theory of hole superconductivity.

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