Giant Nernst effect in the pseudogap phase of high Tc superconductors

Kazumi Maki, Balázs Dóra, Attila Virosztek, András Ványolos

Research output: Contribution to journalArticle

20 Citations (Scopus)

Abstract

We have investigated theoretically the Nernst effect in unconventional (d-wave) charge and spin density waves (UDW). In the presence of magnetic field, Landau levels are formed, and the gapless behaviour of the low energy excitations change into gapped behaviour. When additional electric field is applied, the quasiparticles drift with a velocity of E × B/B2, and carry entropy. From this, the Nernst coefficient can be calculated using the Kelvin relation. The present results account very nicely for the measured Nernst signal in the pseudogap phase of high Tc superconductor La2-xSrxCuO4 and Bi2Sr2-yLayCuO6. This indicates that the large Nernst effect is a clear signiture of UDW.

Original languageEnglish
Pages (from-to)693-695
Number of pages3
JournalCurrent Applied Physics
Volume4
Issue number6
DOIs
Publication statusPublished - Nov 1 2004

Keywords

  • High T superconductors
  • Nernst effect
  • Unconventional density waves

ASJC Scopus subject areas

  • Materials Science(all)
  • Physics and Astronomy(all)

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