Pressure-induced transition to the collapsed tetragonal phase in BaCr2As2

被引：16

作者：

Naumov, P. G. ^{[1
,2
]}

Filsinger, K. ^{[1
]}

Barkalov, O. I. ^{[1
,3
]}

Fecher, G. H. ^{[1
]}

Medvedev, S. A. ^{[1
]}

Felser, C. ^{[1
]}

机构：

[1] Max Planck Inst Chem Phys Solids, Nothnitzer Str 40, D-01187 Dresden, Germany

[2] Russian Acad Sci, Fed Sci Res Ctr Crystallog & Photon, Shubnikov Inst Crystallog, Leninskii Prospekt 59, Moscow 119333, Russia

[3] Russian Acad Sci, Inst Solid State Phys, Acad Ossipyan Str 2, Chernogolovka 142432, Moscow District, Russia

来源：

PHYSICAL REVIEW B | 2017年 / 95卷 / 14期

关键词：

SUPERCONDUCTORS;

D O I：

10.1103/PhysRevB.95.144106

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The structural and electronic properties of BaCr2As2, which is isostructural to the 122 iron arsenide superconductors, are studied at high pressures using synchrotron x-ray powder diffraction, electrical resistivity measurements, and first-principles calculations. At a pressure of about 18.5 GPa, an isostructural phase transition to a collapsed tetragonal phase is observed, similar to that in BaFe2As2. In both phases, BaCr2As2 is a normal metal. Electronic structure calculations suggest a metallic and antiferromagnetic ground state with G-type magnetic order for the collapsed tetragonal phase.

引用

页数：6

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