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

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

24 Citations (Scopus)

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.

Original language	English
Pages (from-to)	S296-S297
Journal	Physica C: Superconductivity and its applications
Volume	470
Issue number	SUPPL.1
DOIs	https://doi.org/10.1016/j.physc.2009.11.059
Publication status	Published - 2010 Dec
Externally published	Yes

Keywords

BaIrP
BaRhP
SrIr As
Superconductivity
ThCrSi-type

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Energy Engineering and Power Technology
Electrical and Electronic Engineering

Access to Document

10.1016/j.physc.2009.11.059

Cite this

@article{7274127da91d4df2b43dac54cf70c35c,

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 .",

year = "2010",

month = dec,

doi = "10.1016/j.physc.2009.11.059",

language = "English",

volume = "470",

pages = "S296--S297",

journal = "Physica C: Superconductivity and its Applications",

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T1 - Superconductivity in 4d and 5d transition metal layered pnictides BaRh 2P2, BaIr2P2 and SrIr 2As2

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 .

PY - 2010/12

Y1 - 2010/12

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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