Superconductivity in 4d and 5d transition metal layered pnictides BaRh 2P2, BaIr2P2 and SrIr 2As2

D. Hirai; T. Takayama; D. Hashizume; R. Higashinaka; A. Yamamoto; A. K. Hiroko; H. Takagi

doi:10.1016/j.physc.2009.11.059

Superconductivity in 4d and 5d transition metal layered pnictides BaRh ₂P₂, BaIr₂P₂ and SrIr ₂As₂

D. Hirai, T. Takayama, D. Hashizume, R. Higashinaka, A. Yamamoto, A. K. Hiroko, H. Takagi

研究成果: Article › 査読

26 被引用数 (Scopus)

抄録

Bulk superconductivity was discovered in BaRh₂P₂ (Tc=1.0K), BaIr₂P₂ (Tc=2.1K) and SrIr₂As ₂ (Tc=2.9K), which are isostructural to (Ba,K)Fe₂As ₂, 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 K²) for BaRh₂P₂, BaIr₂P₂ and SrIr ₂As₂ respectively, indicate that the electronic density of states of these three compounds are moderately large but smaller than those of Fe pnictide superconductors.

本文言語	English
ページ（範囲）	S296-S297
ジャーナル	Physica C: Superconductivity and its applications
巻	470
号	SUPPL.1
DOI	https://doi.org/10.1016/j.physc.2009.11.059
出版ステータス	Published - 2010 12月
外部発表	はい

ASJC Scopus subject areas

電子材料、光学材料、および磁性材料
凝縮系物理学
エネルギー工学および電力技術
電子工学および電気工学

文献へのアクセス

10.1016/j.physc.2009.11.059

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引用スタイル

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title = "Superconductivity in 4d and 5d transition metal layered pnictides BaRh 2P2, BaIr2P2 and SrIr 2As2",

abstract = "Bulk superconductivity was discovered in BaRh2P2 (Tc=1.0K), BaIr2P2 (Tc=2.1K) and SrIr2As 2 (Tc=2.9K), which are isostructural to (Ba,K)Fe2As 2, 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 K2) for BaRh2P2, BaIr2P2 and SrIr 2As2 respectively, indicate that the electronic density of states of these three compounds are moderately large but smaller than those of Fe pnictide superconductors.",

keywords = "BaIrP, BaRhP, SrIr As, Superconductivity, ThCrSi-type",

author = "D. Hirai and T. Takayama and D. Hashizume and R. Higashinaka and A. Yamamoto and Hiroko, {A. K.} and H. Takagi",

note = "Funding Information: The authors thank M. Nohara and R.S. Perry for stimulating discussion. This work was supported by MEXT (Grant Nos. 19104008 and 16076204 ), JST-TRIP and Global COE Program “the Physical Sciences Frontier”, MEXT of Japan .",

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AU - Hirai, D.

AU - Takayama, T.

AU - Hashizume, D.

AU - Higashinaka, R.

AU - Yamamoto, A.

AU - Hiroko, A. K.

AU - Takagi, H.

N1 - Funding Information: The authors thank M. Nohara and R.S. Perry for stimulating discussion. This work was supported by MEXT (Grant Nos. 19104008 and 16076204 ), JST-TRIP and Global COE Program “the Physical Sciences Frontier”, MEXT of Japan .

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N2 - Bulk superconductivity was discovered in BaRh2P2 (Tc=1.0K), BaIr2P2 (Tc=2.1K) and SrIr2As 2 (Tc=2.9K), which are isostructural to (Ba,K)Fe2As 2, 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 K2) for BaRh2P2, BaIr2P2 and SrIr 2As2 respectively, indicate that the electronic density of states of these three compounds are moderately large but smaller than those of Fe pnictide superconductors.

AB - Bulk superconductivity was discovered in BaRh2P2 (Tc=1.0K), BaIr2P2 (Tc=2.1K) and SrIr2As 2 (Tc=2.9K), which are isostructural to (Ba,K)Fe2As 2, 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 K2) for BaRh2P2, BaIr2P2 and SrIr 2As2 respectively, indicate that the electronic density of states of these three compounds are moderately large but smaller than those of Fe pnictide superconductors.

KW - BaIrP

KW - BaRhP

KW - SrIr As

KW - Superconductivity

KW - ThCrSi-type

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