Speaker
Prof.
Masaki Oshikawa
(University of Tokyo, Japan)
Description
Transport in one-dimensional electron systems has been a
fertile field of
study. In particular, electron-electron interactions can be
taken into account
in the framework of Tomonaga-Luttinger liquid (TLL)
theory. It leads
to many interesting predictions, including a switching of the
direction of
the current by a magnetic field at a junction of 3 TLLs [1].
Recently, for non-interacting electrons, it was found that
the thermoelectric
efficiency can exceed Curzon-Ahlborn limit, if a magnetic
field is applied
to a junction of 3 one-dimensional channels [2]. Motivated
by this finding,
we will discuss thermal transport at junctions of 3 TLLs and
report some
preliminary results.
References:
[1] C. Chamon, M. O., I. Affleck, Phys. Rev. Lett. 91,
206403 (2003);
JSTAT 2006, P02008.
[2] K. Brandner, K. Saito, U. Seifert, Phys. Rev. Lett. 110,
070603 (2013).
