Non-intrinsic superconductivity in InN epilayers: Role of Indium Oxide

In recent years there have been reports of anomalous electrical resistivity and the presence of superconductivity in semiconducting InN layers. By a careful correlation of the temperature dependence of resistivity and magnetic susceptibility with structural information from high-resolution x-ray dif...

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Bibliographic Details
Published in:Solid state communications 2008-06, Vol.146 (9), p.361-364
Main Authors: Kadir, Abdul, Mukhopadhyay, Sourin, Ganguli, Tapas, Galande, Charudatta, Gokhale, M.R., Arora, B.M., Raychaudhuri, Pratap, Bhattacharya, Arnab
Format: Article
Language:English
Subjects:
A. Semiconductors
A. Superconductors
C. Impurities in semiconductors
C. X-ray scattering
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Exact sciences and technology
Occurrence, potential candidates
Physics
Superconductivity
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Summary:In recent years there have been reports of anomalous electrical resistivity and the presence of superconductivity in semiconducting InN layers. By a careful correlation of the temperature dependence of resistivity and magnetic susceptibility with structural information from high-resolution x-ray diffraction measurements, we show that superconductivity is not intrinsic to InN and is seen only in samples that show traces of oxygen impurity. We hence believe that InN is not intrinsically a superconducting semiconductor.
ISSN:0038-1098
1879-2766
DOI:10.1016/j.ssc.2008.04.002