Document Type

Article

Publication Date

12-26-2012

Journal or Book Title

Physical Review B

Volume

86

Issue

22

First Page

224514

DOI

10.1103/PhysRevB.86.224514

Abstract

We present heat capacity, c-axis thermal expansion and pressure-dependent, low-field, temperature-dependent magnetization for pressures up to ∼12 kbar, data for KFe2As2 single crystals. Tc decreases under pressure with dTc/dP≈−0.10 K/kbar. The inferred uniaxial, c-axis, pressure derivative is positive, dTc/dpc≈0.11 K/kbar. The data are analyzed in comparison with those for overdoped Fe-based superconductors. Arguments are presented that superconductivity in KFe2As2 may be different from the other overdoped, Fe-based materials in the 122 family.

Comments

This article is from Physical Review B 86 (2012): 224514, doi:10.1103/PhysRevB.86.224514.

Copyright Owner

American Physical Society

Language

en

File Format

application/pdf

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