Spin-Charge gauge approach to "Pseudogap": theory versus experiments

Details Spin-Charge gauge approach to "Pseudogap": theory versus experiments Spin-Charge gauge approach to "Pseudogap": theory versus experiments

2003-04-17

arxiv.org/abs/cond-mat/0304408v2

Physics

Condensed Matter

Strongly Correlated Electrons

26 pages, 7 figures. Revised version, added references. To appear in Phys. Rev. B

Scientific paper

We propose an explanation of several experimental features related to the ``pseudogap'' in HTS cuprates in terms of a spin-charge gauge theory approach to the t-J model. The metal-insulator crossover as temperature decreases is explained from the competition between antiferromagnetism and dissipative charge dynamics. We show that gauge interactions bind spinon and holon into an electron resonance, whose recombination time shows up in the out-of-plane resistivity. The theoretical results are sistematically compared with experimental data, finding a very good agreement.

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