Superconductivity in 4d and 5d transition metal layered pnictides BaRh2P2, BaIr2P2 and SrIr2As2

被引：26

作者：

Hirai, D. ^{[1
]}

Takayama, T. ^{[1
,2
]}

Hashizume, D. ^{[3
]}

Higashinaka, R. ^{[3
]}

Yamamoto, A. ^{[2
,3
]}

Hiroko, A. K. ^{[3
]}

Takagi, H. ^{[1
,2
,3
]}

机构：

[1] Univ Tokyo, Dept Adv Mat, Chiba 2778561, Japan

[2] JST, Transformat Res Project Iron Pnictides TRIP, Chiba 2778561, Japan

[3] RIKEN, Inst Phys & Chem Res, Wako, Saitama 3510198, Japan

来源：

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

关键词：

BaRh2P2; BaIr2P2; SrIr2As2; Superconductivity; ThCr2Si2-type; CRYSTAL; CA; BA;

D O I：

10.1016/j.physc.2009.11.059

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Bulk superconductivity was discovered in BaRh2P2 (T-c = 1.0 K), BaIr2P2 (T-c = 2.1 K) and SrIr2As2 (T-c = 2.9 K), which are isostructural to (Ba,K)Fe2As2, indicative of the appearance of superconductivity over a wide variety of layered transition metal pnictides. The electronic specific heat coefficient in the normal state, 9.75, 6.86 and 7.03 mJ/(mol K-2) for BaRh2P2. BaIr2P2 and SrIr2As2 respectively, indicate that the electronic density of states of these three compounds are moderately large but smaller than those of Fe pnictide superconductors. (C) 2009 Elsevier B.V. All rights reserved.

引用

页码：S296 / S297

页数：2

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