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Sharp Signature of adx2−y2Quantum Critical Point in the Hall Coefficient of Cuprate Superconductors

2002/01/14 by Sudip Chakravarty, Chetan Nayak, Sumanta Tewari +1 · 4 citations
Materials Science · Physics and Astronomy · #Advanced Condensed Matter Physics #Magnetic and transport properties of perovskites and related materials #Physics of Superconductivity and Magnetism #cond-mat.str-el #cond-mat.supr-con

paper · pdf · doi:10.1103/physrevlett.89.277003

published as Phys. Rev. Lett. 89, 277003 (2002). · 5 pages, 2 eps figures

arxiv created 2002/01/14 · openalex publication_date 2002/12/19 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28

Abstract

We study the behavior of the Hall coefficient, RH, in a system exhibiting d_x2\ensuremath-y2 density-wave order in a regime in which the carrier concentration, x, is tuned to approach a quantum critical point at which the order is destroyed. At the mean-field level, we find that nHall=1/RH evinces a sharp signature of the transition. There is a kink in nHall at the critical value of the carrier concentration, xc; as the critical point is approached from the ordered side, the slope of nHall diverges. Hall transport experiments in the cuprates, at high magnetic fields sufficient to destroy superconductivity, should reveal this effect.

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