Campus Units

Physics and Astronomy, Ames Laboratory

Document Type

Article

Publication Version

Published Version

Publication Date

3-1-2013

Journal or Book Title

Physical Review B

Volume

87

Issue

9

First Page

094505

DOI

10.1103/PhysRevB.87.094505

Abstract

In-plane resistivity measurements as a function of temperature, magnetic field, and its orientation with respect to the crystallographic ab plane were used to study the upper critical field, Hc2, of two overdoped compositions of the iron-based superconductor Ba(Fe1−xNix)2As2, x=0.054 and x=0.072. Measurements were performed using precise alignment (with accuracy less than 0.1∘) of magnetic field with respect to the Fe-As plane. The dependence of the Hc2 on angle θ between the field and the ab plane was measured in isothermal conditions in a broad temperature range. We found that the shape of Hc2(θ) clearly deviates from the Ginzburg-Landau functional form.

Comments

This article is published as Murphy, J., M. A. Tanatar, D. Graf, J. S. Brooks, S. L. Bud'ko, P. C. Canfield, V. G. Kogan, and R. Prozorov. "Angular-dependent upper critical field of overdoped Ba (Fe 1− x Ni x) 2 As 2." Physical Review B 87, no. 9 (2013): 094505. DOI: 10.1103/PhysRevB.87.094505. Posted with permission.

Copyright Owner

American Physical Society

Language

en

File Format

application/pdf

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