Anomalous magnetism of superconducting Mg-doped InN film | Zendy

P. Chang | Zendy; Soon-Cheol Hong | Zendy; Wen-Wei Lin | Zendy; Yuanting Guo | Zendy

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Anomalous magnetism of superconducting Mg-doped InN film

Author(s) -

P. Chang,

Soon-Cheol Hong,

Wen-Wei Lin,

Yuanting Guo

Publication year - 2016

Publication title -

aip advances

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.421

H-Index - 58

ISSN - 2158-3226

DOI - 10.1063/1.4942774

Subject(s) - condensed matter physics , superconductivity , meissner effect , doping , magnetism , magnetoresistance , materials science , superconducting transition temperature , transition temperature , anisotropy , physics , magnetic field , quantum mechanics

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

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