J. Phys. IV France
Volume 114, April 2004
Page(s) 301 - 303

J. Phys. IV France
114 (2004) 301
DOI: 10.1051/jp4:2004114065

Magnetothermopower in unconventional charge density wave ground state of $\alpha$-(BEDT-TTF) 2KHg(SCN) 4

B. Dóra1, K. Maki2, A. Virosztek3, 4 and A. Ványolos3

1  The Abdus Salam ICTP, Strada Costiera 11, 34014 Trieste, Italy
2  Department of Physics and Astronomy, University of Southern California, Los Angeles, CA 90089-0484, USA
3  Department of Physics, Budapest University of Technology and Economics, 1521 Budapest, Hungary
4  Research Institute for Solid State Physics and Optics, PO Box 49, 1525 Budapest, Hungary

We have investigated theoretically the thermoelectric power and the Nernst effect in unconventional density waves (UDW). Due to the presence of magnetic field, Landau levels are formed, and the low energy excitations change from gapless to gapped. The present results account consistently for the recent data of magnetothermopower in $\alpha$-(BEDT-TTF) 2KHg(SCN) 4 obtained by Choi et al. (Phys. Rev. B, 65, 205119 (2002)). This confirms further our identification of low temperature phase (LTP) in this salt as UCDW. Key words. density waves, $\alpha$-(BEDT-TTF) 2KHg(SCN) 4, thermoelectric power.

© EDP Sciences 2004