Effect of Impurities on the Specific Heat of the Spin-Triplet Superconductor Sr2RuO4

Shuji NishiZaki; Yoshiteru Maeno; Zhiqiang Mao

doi:10.1023/a:1022551313401

Effect of Impurities on the Specific Heat of the Spin-Triplet Superconductor Sr₂RuO₄

Shuji NishiZaki, Yoshiteru Maeno, Zhiqiang Mao

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

91 Scopus citations

Abstract

We have investigated the specific heat of single crystals of the spin-triplet superconductor Sr₂RuO₄ (T_c0 = 1.50 K) with various T_c. We focus on the T_c dependence of the specific heat jump at T_c and of the residual specific heat coefficient. The observed behavior is not quantitatively consistent with a model with a simple isotropic gap. We argue that inclusions of both the in-plane anisotropy of the gap and the dependence of the gap on different Fermi-surface sheets are needed to resolve this discrepancy.

Original language	English (US)
Pages (from-to)	1581-1585
Number of pages	5
Journal	Journal of Low Temperature Physics
Volume	117
Issue number	5-6
DOIs	https://doi.org/10.1023/a:1022551313401
State	Published - Jan 1 1999

All Science Journal Classification (ASJC) codes

Atomic and Molecular Physics, and Optics
Materials Science(all)
Condensed Matter Physics

Access to Document

10.1023/a:1022551313401

Cite this

@article{5af98c7046034b93bbbab4c6dbcd520f,

title = "Effect of Impurities on the Specific Heat of the Spin-Triplet Superconductor Sr2RuO4",

abstract = "We have investigated the specific heat of single crystals of the spin-triplet superconductor Sr2RuO4 (Tc0 = 1.50 K) with various Tc. We focus on the Tc dependence of the specific heat jump at Tc and of the residual specific heat coefficient. The observed behavior is not quantitatively consistent with a model with a simple isotropic gap. We argue that inclusions of both the in-plane anisotropy of the gap and the dependence of the gap on different Fermi-surface sheets are needed to resolve this discrepancy.",

author = "Shuji NishiZaki and Yoshiteru Maeno and Zhiqiang Mao",

year = "1999",

month = jan,

day = "1",

doi = "10.1023/a:1022551313401",

language = "English (US)",

volume = "117",

pages = "1581--1585",

journal = "Journal of Low Temperature Physics",

issn = "0022-2291",

publisher = "Springer New York",

number = "5-6",

}

TY - JOUR

T1 - Effect of Impurities on the Specific Heat of the Spin-Triplet Superconductor Sr2RuO4

AU - NishiZaki, Shuji

AU - Maeno, Yoshiteru

AU - Mao, Zhiqiang

PY - 1999/1/1

Y1 - 1999/1/1

N2 - We have investigated the specific heat of single crystals of the spin-triplet superconductor Sr2RuO4 (Tc0 = 1.50 K) with various Tc. We focus on the Tc dependence of the specific heat jump at Tc and of the residual specific heat coefficient. The observed behavior is not quantitatively consistent with a model with a simple isotropic gap. We argue that inclusions of both the in-plane anisotropy of the gap and the dependence of the gap on different Fermi-surface sheets are needed to resolve this discrepancy.

AB - We have investigated the specific heat of single crystals of the spin-triplet superconductor Sr2RuO4 (Tc0 = 1.50 K) with various Tc. We focus on the Tc dependence of the specific heat jump at Tc and of the residual specific heat coefficient. The observed behavior is not quantitatively consistent with a model with a simple isotropic gap. We argue that inclusions of both the in-plane anisotropy of the gap and the dependence of the gap on different Fermi-surface sheets are needed to resolve this discrepancy.

UR - http://www.scopus.com/inward/record.url?scp=0033333924&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0033333924&partnerID=8YFLogxK

U2 - 10.1023/a:1022551313401

DO - 10.1023/a:1022551313401

M3 - Article

AN - SCOPUS:0033333924

SN - 0022-2291

VL - 117

SP - 1581

EP - 1585

JO - Journal of Low Temperature Physics

JF - Journal of Low Temperature Physics

IS - 5-6

ER -

Effect of Impurities on the Specific Heat of the Spin-Triplet Superconductor Sr₂RuO₄

Abstract

All Science Journal Classification (ASJC) codes

Access to Document

Other files and links

Fingerprint

Cite this