Transport anomaly in the low-energy regime of spin chains

Research output: Contribution to journalArticle

37 Citations (Scopus)

Abstract

The anomalous thermal conductivity in spin chains observed in experiments is studied for the low-temperature regime. In the effective dynamics with most realistic perturbations, the so-called umklapp terms are irrelevant to reduce the mean free path in the energy transport at even finite temperatures. This is consistent with the large conductivities found in recent experiments. The Drude weight which is the prefactor in the divergent conductivity is calculated, and the temperature dependence is discussed.

Original languageEnglish
Article number064410
Pages (from-to)644101-644104
Number of pages4
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume67
Issue number6
Publication statusPublished - 2003 Feb 1
Externally publishedYes

Fingerprint

anomalies
conductivity
mean free path
thermal conductivity
perturbation
Temperature
temperature dependence
energy
Thermal conductivity
Experiments
temperature

ASJC Scopus subject areas

  • Condensed Matter Physics

Cite this

Transport anomaly in the low-energy regime of spin chains. / Saitou, Keiji.

In: Physical Review B - Condensed Matter and Materials Physics, Vol. 67, No. 6, 064410, 01.02.2003, p. 644101-644104.

Research output: Contribution to journalArticle

@article{8942717397f9456c9548f5c539e36f43,
title = "Transport anomaly in the low-energy regime of spin chains",
abstract = "The anomalous thermal conductivity in spin chains observed in experiments is studied for the low-temperature regime. In the effective dynamics with most realistic perturbations, the so-called umklapp terms are irrelevant to reduce the mean free path in the energy transport at even finite temperatures. This is consistent with the large conductivities found in recent experiments. The Drude weight which is the prefactor in the divergent conductivity is calculated, and the temperature dependence is discussed.",
author = "Keiji Saitou",
year = "2003",
month = "2",
day = "1",
language = "English",
volume = "67",
pages = "644101--644104",
journal = "Physical Review B-Condensed Matter",
issn = "1098-0121",
publisher = "American Physical Society",
number = "6",

}

TY - JOUR

T1 - Transport anomaly in the low-energy regime of spin chains

AU - Saitou, Keiji

PY - 2003/2/1

Y1 - 2003/2/1

N2 - The anomalous thermal conductivity in spin chains observed in experiments is studied for the low-temperature regime. In the effective dynamics with most realistic perturbations, the so-called umklapp terms are irrelevant to reduce the mean free path in the energy transport at even finite temperatures. This is consistent with the large conductivities found in recent experiments. The Drude weight which is the prefactor in the divergent conductivity is calculated, and the temperature dependence is discussed.

AB - The anomalous thermal conductivity in spin chains observed in experiments is studied for the low-temperature regime. In the effective dynamics with most realistic perturbations, the so-called umklapp terms are irrelevant to reduce the mean free path in the energy transport at even finite temperatures. This is consistent with the large conductivities found in recent experiments. The Drude weight which is the prefactor in the divergent conductivity is calculated, and the temperature dependence is discussed.

UR - http://www.scopus.com/inward/record.url?scp=4243461344&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=4243461344&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:4243461344

VL - 67

SP - 644101

EP - 644104

JO - Physical Review B-Condensed Matter

JF - Physical Review B-Condensed Matter

SN - 1098-0121

IS - 6

M1 - 064410

ER -