TY - JOUR
T1 - Resolution of entropy ln ∞2 by ordering in two-channel kondo lattice
AU - Hoshino, Shintaro
AU - Otsuki, Junya
AU - Kuramoto, Yoshio
N1 - Copyright:
Copyright 2013 Elsevier B.V., All rights reserved.
PY - 2013/4
Y1 - 2013/4
N2 - Peculiar property of electronic order is clarified for the two-channel Kondo lattice. With two conduction electrons per site, the order parameter is a composite quantity involving both local and itinerant degrees of freedom. In contrast to the ordinary Kondo lattice, a heavy electron band is absent above the transition temperature, but is rapidly formed below it. The change of entropy associated with the ordering is found to be close to ln ∞2 per site. This entropy corresponds to the residual entropy in a two-channel Kondo impurity, which has been regarded as due to localized free Majorana particles. The present composite order is interpreted as instability of Majorana particles toward non-Kramers conduction electrons plus heavy fermions that involve localized electrons.
AB - Peculiar property of electronic order is clarified for the two-channel Kondo lattice. With two conduction electrons per site, the order parameter is a composite quantity involving both local and itinerant degrees of freedom. In contrast to the ordinary Kondo lattice, a heavy electron band is absent above the transition temperature, but is rapidly formed below it. The change of entropy associated with the ordering is found to be close to ln ∞2 per site. This entropy corresponds to the residual entropy in a two-channel Kondo impurity, which has been regarded as due to localized free Majorana particles. The present composite order is interpreted as instability of Majorana particles toward non-Kramers conduction electrons plus heavy fermions that involve localized electrons.
KW - Composite order
KW - Continuoustime quantum Monte Carlo
KW - Dynamical mean-field theory
KW - Majorana fermion
KW - Two-channel Kondo lattice
UR - http://www.scopus.com/inward/record.url?scp=84876004312&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84876004312&partnerID=8YFLogxK
U2 - 10.7566/JPSJ.82.044707
DO - 10.7566/JPSJ.82.044707
M3 - Article
AN - SCOPUS:84876004312
VL - 82
JO - Journal of the Physical Society of Japan
JF - Journal of the Physical Society of Japan
SN - 0031-9015
IS - 4
M1 - 044707
ER -