Angular dependent magnetothermopower of alpha-(ET)2KHg(SCN)4
Journal
Low Temperature Physics
Date Issued
2011-07-04
Author(s)
D. Krstovska
E. Steven
E. S. Choi
J. S. Brooks
DOI
10.1063/1.3670035
Abstract
The magnetic field and angular dependencies of the thermopower and Nernst
effect of the quasi-two-dimensional organic conductor alpha-(ET)2KHg(SCN)4 are
experimentally measured at temperatures below (4 K) and above (9 K) the
transition temperature to fields of In addition, a theoretical model which
involves a magnetic breakdown effect between the q1D and q2D bands is proposed
in order to simulate the data. Analysis of the background components of the
thermopower and Nernst effect imply that at low temperatures, in the CDW state,
the properties of alpha-(ET)2KHg(SCN)4 are determined mostly by the orbits on
the new open Fermi sheets. Quantum oscillations observed in the both
thermoelectric effects, at fields above 8 T, originate only from the alpha
orbit.
effect of the quasi-two-dimensional organic conductor alpha-(ET)2KHg(SCN)4 are
experimentally measured at temperatures below (4 K) and above (9 K) the
transition temperature to fields of In addition, a theoretical model which
involves a magnetic breakdown effect between the q1D and q2D bands is proposed
in order to simulate the data. Analysis of the background components of the
thermopower and Nernst effect imply that at low temperatures, in the CDW state,
the properties of alpha-(ET)2KHg(SCN)4 are determined mostly by the orbits on
the new open Fermi sheets. Quantum oscillations observed in the both
thermoelectric effects, at fields above 8 T, originate only from the alpha
orbit.