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The Hall conductivity in unconventional charge density wave systems

D. N. Aristov·R. Zeyher
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Abstract

Charge density waves with unconventional order parameters, for instance, with d-wave symmetry (DDW), may be relevant in the underdoped regime of high-T_c cuprates or other quasi-one or two dimensional metals. A DDW state is characterized by two branches of low-lying electronic excitations. The resulting quantum mechanical current has an inter-branch component which leads to an additional mass term in the expression for the Hall conductivity. This extra mass term is parametrically enhanced near the ``hot spots'' of fermionic dispersion and is non-neglegible as is shown by numerical calculations of the Hall number in the DDW state.

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D. N. Aristov, R. Zeyher. 2004-05-10. The Hall conductivity in unconventional charge density wave systems. https://doi.org/10.1103/physrevb.70.212511

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