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Magnetotransport of proton-irradiated BaFe2As2 and BaFe1.985Co0.015As2 single crystals

Journal Article · · Physical Review B
 [1];  [1];  [2];  [3];  [4];  [1];  [1]
  1. Imperial College, London (United Kingdom)
  2. Univ. of Surrey, Guildford (United Kingdom)
  3. Univ. of Tennessee, Knoxville, TN (United States); Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
  4. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
+ Show Author Affiliations

In this paper, we study the magnetotransport properties of the ferropnictide crystals BaFe2As2 and BaFe1.985Co0.015As2. These materials exhibit a high field linear magnetoresistance that has been attributed to the quantum linear magnetoresistance model. In this model, the linear magnetoresistance is dependent on the concentration of scattering centers in the material. By using proton-beam irradiation to change the defect scattering density, we find that the dependence of the magnitude of the linear magnetoresistance on scattering quite clearly contravenes this prediction. Finally, a number of other scaling trends in the magnetoresistance and high field Hall data are observed and discussed.

Research Organization:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
Grant/Contract Number:
AC05-00OR22725
OSTI ID:
1286874
Alternate ID(s):
OSTI ID: 1180760
Journal Information:
Physical Review B, Journal Name: Physical Review B Journal Issue: 5 Vol. 91; ISSN 2469-9950
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English

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Cited By (3)

Magnetotransport studies of optimally doped Sr(Fe 1− x Co x ) 2 As 2 journal November 2018
Scaling of magnetotransport in the Ba(Fe 1− x Co x ) 2 As 2 series journal January 2019
Magnetotransport studies of optimally doped Sr(Fe${_{1-x}}$Co${_x}$)${_2}$As${_2}$ text January 2018

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Related Subjects

36 MATERIALS SCIENCE
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY