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Non-intrinsic superconductivity in InN epilayers: Role of Indium Oxide |
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| Authors: | Abdul Kadir Sourin Mukhopadhyay Tapas Ganguli Charudatta Galande M.R. Gokhale B.M. Arora Pratap Raychaudhuri Arnab Bhattacharya |
| Affiliation: | aDepartment of Condensed Matter Physics and Materials Science, Tata Institute of Fundamental Research, Homi Bhabha Road, Mumbai 400005, India bSolid State Laser Division, Raja Ramanna Centre for Advanced Technology, Indore 425013, India |
| Abstract: | 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. |
| Keywords: | A. Semiconductors A. Superconductors C. Impurities in semiconductors C. X-ray scattering |
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