Superconductivity of InN observed in the magnetoresistance at low temperature

T. Inushima, N. Kato, T. Takenobu, M. Motokawa, M. Higashiwaki, T. Matsui

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Abstract

We report on the superconductivity of n-type InN. There is an optimum carrier density for the occurrence of the superconductivity. The lowest carrier density is limited by the Mott transition of nc 2 × 10 17 cm-3 and the highest density is limited by the superconductivity to metal transition of ni ∼ 7 × 10 20cm-3. We propose a mechanism where the occurrence of the superconductivity is related to the presence of In-In chains of finite lengths in the ab plane. The In-In chains, which originate from the inversion domains of InN grown on sapphire (0001) and elongate along [110], are coupled to form micro Josephson-junctions.

Original languageEnglish
Article number064
Pages (from-to)279-282
Number of pages4
JournalJournal of Physics: Conference Series
Volume51
Issue number1
DOIs
Publication statusPublished - 2006 Dec 1
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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    Inushima, T., Kato, N., Takenobu, T., Motokawa, M., Higashiwaki, M., & Matsui, T. (2006). Superconductivity of InN observed in the magnetoresistance at low temperature. Journal of Physics: Conference Series, 51(1), 279-282. [064]. https://doi.org/10.1088/1742-6596/51/1/064