Thermomagnetic power and figure of merit for spin-1/2 Heisenberg chain

Shunsuke Furukawa, Dai Ikeda, Kazumitsu Sakai

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

Transport properties in the presence of magnetic fields are numerically studied for the spin-1/2 Heisenberg XXZ chain. The breakdown of the spin-reversal symmetry due to the magnetic field induces the magnetothermal effect. In analogy with the thermoelectric effect in electron systems, the thermomagnetic power (magnetic Seebeck coefficient) is provided, and is numerically evaluated by the exact diagonalization for wide ranges of temperatures and various magnetic fields. For the antiferromagnetic regime, we find the magnetic Seebeck coefficient changes sign at certain temperatures, which is interpreted as an effect of strong correlations. We also compute the thermomagnetic figure of merit determining the efficiency of the thermomagnetic devices for cooling or power generation.

Original languageEnglish
Pages (from-to)3241-3247
Number of pages7
JournalJournal of the Physical Society of Japan
Volume74
Issue number12
DOIs
Publication statusPublished - 2005 Dec 1
Externally publishedYes

Fingerprint

figure of merit
Seebeck effect
magnetic fields
transport properties
breakdown
cooling
temperature
symmetry
electrons

Keywords

  • Figure of merit
  • Heisenberg chain
  • Magnetothermal effect
  • Quantum integrable system
  • Seebeck coefficient
  • Thermal conductivity
  • Transport properties

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Thermomagnetic power and figure of merit for spin-1/2 Heisenberg chain. / Furukawa, Shunsuke; Ikeda, Dai; Sakai, Kazumitsu.

In: Journal of the Physical Society of Japan, Vol. 74, No. 12, 01.12.2005, p. 3241-3247.

Research output: Contribution to journalArticle

@article{79387536bedc463f9b42a3813328a4ef,
title = "Thermomagnetic power and figure of merit for spin-1/2 Heisenberg chain",
abstract = "Transport properties in the presence of magnetic fields are numerically studied for the spin-1/2 Heisenberg XXZ chain. The breakdown of the spin-reversal symmetry due to the magnetic field induces the magnetothermal effect. In analogy with the thermoelectric effect in electron systems, the thermomagnetic power (magnetic Seebeck coefficient) is provided, and is numerically evaluated by the exact diagonalization for wide ranges of temperatures and various magnetic fields. For the antiferromagnetic regime, we find the magnetic Seebeck coefficient changes sign at certain temperatures, which is interpreted as an effect of strong correlations. We also compute the thermomagnetic figure of merit determining the efficiency of the thermomagnetic devices for cooling or power generation.",
keywords = "Figure of merit, Heisenberg chain, Magnetothermal effect, Quantum integrable system, Seebeck coefficient, Thermal conductivity, Transport properties",
author = "Shunsuke Furukawa and Dai Ikeda and Kazumitsu Sakai",
year = "2005",
month = "12",
day = "1",
doi = "10.1143/JPSJ.74.3241",
language = "English",
volume = "74",
pages = "3241--3247",
journal = "Journal of the Physical Society of Japan",
issn = "0031-9015",
publisher = "Physical Society of Japan",
number = "12",

}

TY - JOUR

T1 - Thermomagnetic power and figure of merit for spin-1/2 Heisenberg chain

AU - Furukawa, Shunsuke

AU - Ikeda, Dai

AU - Sakai, Kazumitsu

PY - 2005/12/1

Y1 - 2005/12/1

N2 - Transport properties in the presence of magnetic fields are numerically studied for the spin-1/2 Heisenberg XXZ chain. The breakdown of the spin-reversal symmetry due to the magnetic field induces the magnetothermal effect. In analogy with the thermoelectric effect in electron systems, the thermomagnetic power (magnetic Seebeck coefficient) is provided, and is numerically evaluated by the exact diagonalization for wide ranges of temperatures and various magnetic fields. For the antiferromagnetic regime, we find the magnetic Seebeck coefficient changes sign at certain temperatures, which is interpreted as an effect of strong correlations. We also compute the thermomagnetic figure of merit determining the efficiency of the thermomagnetic devices for cooling or power generation.

AB - Transport properties in the presence of magnetic fields are numerically studied for the spin-1/2 Heisenberg XXZ chain. The breakdown of the spin-reversal symmetry due to the magnetic field induces the magnetothermal effect. In analogy with the thermoelectric effect in electron systems, the thermomagnetic power (magnetic Seebeck coefficient) is provided, and is numerically evaluated by the exact diagonalization for wide ranges of temperatures and various magnetic fields. For the antiferromagnetic regime, we find the magnetic Seebeck coefficient changes sign at certain temperatures, which is interpreted as an effect of strong correlations. We also compute the thermomagnetic figure of merit determining the efficiency of the thermomagnetic devices for cooling or power generation.

KW - Figure of merit

KW - Heisenberg chain

KW - Magnetothermal effect

KW - Quantum integrable system

KW - Seebeck coefficient

KW - Thermal conductivity

KW - Transport properties

UR - http://www.scopus.com/inward/record.url?scp=29244455324&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=29244455324&partnerID=8YFLogxK

U2 - 10.1143/JPSJ.74.3241

DO - 10.1143/JPSJ.74.3241

M3 - Article

VL - 74

SP - 3241

EP - 3247

JO - Journal of the Physical Society of Japan

JF - Journal of the Physical Society of Japan

SN - 0031-9015

IS - 12

ER -