Thermal transport studies on Co-doped BaFe2As2

被引：0

作者：

Machida, Y. ^{[1
]}

Tomokuni, K. ^{[1
]}

Isono, T. ^{[1
]}

Izawa, K. ^{[1
]}

Nakajima, Y. ^{[2
,3
]}

Tamegai, T. ^{[2
,3
]}

机构：

[1] Tokyo Inst Technol, Dept Phys, Meguro 1528551, Japan

[2] Univ Tokyo, Dept Appl Phys, Bunkyo 1138656, Japan

[3] Transformat Res Project Iron Pnictides TRIP, JST, Bunkyo 1138656, Japan

来源：

PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS | 2010年 / 470卷

关键词：

Iron pnictides; Thermal transport; Sign-reversing s-wave superconductivity; SUPERCONDUCTOR;

D O I：

10.1016/j.physc.2009.12.018

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We report the thermal transport coefficients of the single crystalline Co-doped BaFe2As2. Signatures of enhancement of the quasiparticle mean-free path are found both in the thermal conductivity and the thermal Hall conductivity in the superconducting state. Moreover, we find a residual T-linear term in the thermal conductivity possibly due to a finite in-gap state induced by impurity pair-breaking, compatible with a sign-reversing s-wave state. (C) 2010 Elsevier B.V. All rights reserved.

引用

收藏

页码：S478 / S479

页数：2

相关论文

共 14 条

[1]

[Anonymous], ARXIV09074399

[2]

CHECKELSKY J, ARXIV08114668

[3] Observation of Fermi-surface-dependent nodeless superconducting gaps in Ba0.6K0.4Fe2As2 [J].

Ding, H. ;

Richard, P. ;

Nakayama, K. ;

Sugawara, K. ;

Arakane, T. ;

Sekiba, Y. ;

Takayama, A. ;

Souma, S. ;

Sato, T. ;

Takahashi, T. ;

Wang, Z. ;

Dai, X. ;

Fang, Z. ;

Chen, G. F. ;

Luo, J. L. ;

Wang, N. L. .

EPL, 2008, 83 (04)

[4] Line nodes in the superconducting gap function of noncentrosymmetric CePt3Si -: art. no. 197002 [J].

Izawa, K ;

Kasahara, Y ;

Matsuda, Y ;

Behnia, K ;

Yasuda, T ;

Settai, R ;

Onuki, Y .

PHYSICAL REVIEW LETTERS, 2005, 94 (19)

[5] Iron-based layered superconductor La[O1-xFx]FeAs (x=0.05-0.12) with Tc=26 K [J].

Kamihara, Yoichi ;

Watanabe, Takumi ;

Hirano, Masahiro ;

Hosono, Hideo .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2008, 130 (11) :3296-+

[6] Anomalous quasiparticle transport in the superconducting state of CeCoIn5 -: art. no. 214515 [J].

Kasahara, Y ;

Nakajima, Y ;

Izawa, K ;

Matsuda, Y ;

Behnia, K ;

Shishido, H ;

Settai, R ;

Onuki, Y .

PHYSICAL REVIEW B, 2005, 72 (21)

[7] Unconventional pairing originating from the disconnected Fermi surfaces of superconducting LaFeAsO1-xFx [J].

Kuroki, Kazuhiko ;

Onari, Seiichiro ;

Arita, Ryotaro ;

Usui, Hidetomo ;

Tanaka, Yukio ;

Kontani, Hiroshi ;

Aoki, Hideo .

PHYSICAL REVIEW LETTERS, 2008, 101 (08)

[8] Unconventional superconductivity with a sign reversal in the order parameter of LaFeAsO1-xFx [J].

Mazin, I. I. ;

Singh, D. J. ;

Johannes, M. D. ;

Du, M. H. .

PHYSICAL REVIEW LETTERS, 2008, 101 (05)

[9] Possible Superconductivity above 25 K in Single-Crystalline Co-Doped BaFe2As2 [J].

Nakajima, Yasuyuki ;

Taen, Toshihiro ;

Tamegai, Tsuyoshi .

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 2009, 78 (02)

[10] 59Co and 75As NMR Investigation of Electron-Doped High Tc Superconductor BaFe1.8Co0.2As2 (Tc=22 K) [J].

Ning, Fanlong ;

Ahilan, Kanagasingham ;

Imai, Takashi ;

Sefat, Athena S. ;

Jin, Ronying ;

McGuire, Michael A. ;

Sales, Brian C. ;

Mandrus, David .

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 2008, 77 (10)