Anomalous magnetism of superconducting Mg-doped InN film

P. H. Chang; S. Y. Hong; W. T. Lin; Y. X. Guo

doi:10.1063/1.4942774

AIP Advances (Feb 2016)

Anomalous magnetism of superconducting Mg-doped InN film

P. H. Chang,
S. Y. Hong,
W. T. Lin,
Y. X. Guo

Affiliations

P. H. Chang: Institute of Mineral Resources Engineering, National Taipei University of Technology, 10608, Taipei, Taiwan, R.O.C.
S. Y. Hong: Institute of Mineral Resources Engineering, National Taipei University of Technology, 10608, Taipei, Taiwan, R.O.C.
W. T. Lin: Institute of Mineral Resources Engineering, National Taipei University of Technology, 10608, Taipei, Taiwan, R.O.C.
Y. X. Guo: Institute of Mineral Resources Engineering, National Taipei University of Technology, 10608, Taipei, Taiwan, R.O.C.

DOI: https://doi.org/10.1063/1.4942774
Journal volume & issue: Vol. 6, no. 2
pp. 025118 – 025118-8

Abstract

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We report on the Meissner effect of Mg-doped InN film with superconducting transition onset temperature Tc,onset of 5 K. Mg-doped InN is magnetically ordered and exhibits a simultaneous first-order magnetic and electric transition near 50 K. Its behavior is similar to that of iron-based superconductors. A strong correlation is proposed to exist between structural distortion and superconductivity when Mg is doped into InN. The suppression of magnetic ordering close to Tc by doping is further demonstrated by anisotropic magnetoresistance and M-H measurements. The findings suggest that the superconducting mechanism in the system may not be conventional BCS.

Published in AIP Advances

ISSN: 2158-3226 (Online)
Publisher: AIP Publishing LLC
Country of publisher: United States
LCC subjects: Science: Physics
Website: http://aipadvances.aip.org/

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