Asymmetric heat flow in mesoscopic magnetic system

Keiji Saito

doi:10.1143/JPSJ.75.034603

Asymmetric heat flow in mesoscopic magnetic system

Keiji Saito

Department of Physics

Research output: Contribution to journal › Article › peer-review

10 Citations (Scopus)

Abstract

The characteristics of heat flow in a coupled magnetic system are studied. The coupled system is composed of a gapped chain and a gapless chain. The system size is assumed to be quite small so that the mean free path is comparable to it. When the parameter set of the temperatures of reservoirs is exchanged, the characteristics of heat flow are studied with the Keldysh Green function technique. The asymmetry of current is found in the presence of a local equilibrium process at the contact between the magnetic systems. The present setup is realistic and such an effect will be observed in real experiments. We also discuss the simple phenomenological explanation to obtain the asymmetry.

Original language	English
Article number	034603
Journal	Journal of the Physical Society of Japan
Volume	75
Issue number	3
DOIs	https://doi.org/10.1143/JPSJ.75.034603
Publication status	Published - 2006 Mar

Keywords

Heat flow control
Quantum magnetic systems
Quantum thermal conduction

ASJC Scopus subject areas

Physics and Astronomy(all)

Access to Document

10.1143/JPSJ.75.034603

Fingerprint Dive into the research topics of 'Asymmetric heat flow in mesoscopic magnetic system'. Together they form a unique fingerprint.

Cite this

@article{c06fe596e8e74403989468ee3084420e,

title = "Asymmetric heat flow in mesoscopic magnetic system",

abstract = "The characteristics of heat flow in a coupled magnetic system are studied. The coupled system is composed of a gapped chain and a gapless chain. The system size is assumed to be quite small so that the mean free path is comparable to it. When the parameter set of the temperatures of reservoirs is exchanged, the characteristics of heat flow are studied with the Keldysh Green function technique. The asymmetry of current is found in the presence of a local equilibrium process at the contact between the magnetic systems. The present setup is realistic and such an effect will be observed in real experiments. We also discuss the simple phenomenological explanation to obtain the asymmetry.",

keywords = "Heat flow control, Quantum magnetic systems, Quantum thermal conduction",

author = "Keiji Saito",

year = "2006",

month = mar,

doi = "10.1143/JPSJ.75.034603",

language = "English",

volume = "75",

journal = "Journal of the Physical Society of Japan",

issn = "0031-9015",

publisher = "Physical Society of Japan",

number = "3",

}

TY - JOUR

T1 - Asymmetric heat flow in mesoscopic magnetic system

AU - Saito, Keiji

PY - 2006/3

Y1 - 2006/3

N2 - The characteristics of heat flow in a coupled magnetic system are studied. The coupled system is composed of a gapped chain and a gapless chain. The system size is assumed to be quite small so that the mean free path is comparable to it. When the parameter set of the temperatures of reservoirs is exchanged, the characteristics of heat flow are studied with the Keldysh Green function technique. The asymmetry of current is found in the presence of a local equilibrium process at the contact between the magnetic systems. The present setup is realistic and such an effect will be observed in real experiments. We also discuss the simple phenomenological explanation to obtain the asymmetry.

AB - The characteristics of heat flow in a coupled magnetic system are studied. The coupled system is composed of a gapped chain and a gapless chain. The system size is assumed to be quite small so that the mean free path is comparable to it. When the parameter set of the temperatures of reservoirs is exchanged, the characteristics of heat flow are studied with the Keldysh Green function technique. The asymmetry of current is found in the presence of a local equilibrium process at the contact between the magnetic systems. The present setup is realistic and such an effect will be observed in real experiments. We also discuss the simple phenomenological explanation to obtain the asymmetry.

KW - Heat flow control

KW - Quantum magnetic systems

KW - Quantum thermal conduction

UR - http://www.scopus.com/inward/record.url?scp=33847723881&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=33847723881&partnerID=8YFLogxK

U2 - 10.1143/JPSJ.75.034603

DO - 10.1143/JPSJ.75.034603

M3 - Article

AN - SCOPUS:33847723881

VL - 75

JO - Journal of the Physical Society of Japan

JF - Journal of the Physical Society of Japan

SN - 0031-9015

IS - 3

M1 - 034603

ER -