Bipolaron kinetics of high-Tcmetal oxides: Hall effect, resistivity and 'spin' gap
- 1 October 1993
- journal article
- Published by IOP Publishing in Superconductor Science and Technology
- Vol. 6 (10) , 755-760
- https://doi.org/10.1088/0953-2048/6/10/009
Abstract
A normal-state kinetic theory of copper-based oxides, which is an extension of BCS theory and Anderson localization to the strong-coupling limit lambda >1, is proposed. In this limit carriers are charged 2e bosons (small bipolarons) below and above Tc. Temperature and doping dependencies of resistivity and Hall effect in copper oxides are explained by taking into account the localization of charged bosons in a random potential. Links with the 'spin' gap, high Tc and with some other unusual properties are discussed.Keywords
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