Chirality Induced Tilted-Hill Giant Nernst Signal

Details Chirality Induced Tilted-Hill Giant Nernst Signal Chirality Induced Tilted-Hill Giant Nernst Signal

2009-11-13

arxiv.org/abs/0911.2512v3

Phys. Rev. Lett. 104, 106404 (2010)

Physics

Condensed Matter

Strongly Correlated Electrons

5 pages and 4 figures, Final version accepted by Phys. Rev. Lett

Scientific paper

10.1103/PhysRevLett.104.106404

We reveal a novel source of giant Nernst response exhibiting strong non-linear temperature and magnetic field dependence including the mysterious tilted-hill temperature profile observed in a pleiad of materials. The phenomenon results directly from the formation of a chiral ground state, e.g. a chiral d-density wave, which is compatible with the eventual observation of diamagnetism and is distinctly different from the usual quasiparticle and vortex Nernst mechanisms. Our picture provides a unified understanding of the anomalous thermoelectricity observed in materials as diverse as hole doped cuprates and heavy-fermion compounds like URu2Si2.

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