Superconductivity of InN observed in the magnetoresistance at low temperature

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

doi:10.1088/1742-6596/51/1/064

Superconductivity of InN observed in the magnetoresistance at low temperature

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

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

5 Citations (Scopus)

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 n_c 2 × 10 ¹⁷ cm^-3 and the highest density is limited by the superconductivity to metal transition of n_i ∼ 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 language	English
Article number	064
Pages (from-to)	279-282
Number of pages	4
Journal	Journal of Physics: Conference Series
Volume	51
Issue number	1
DOIs	https://doi.org/10.1088/1742-6596/51/1/064
Publication status	Published - 2006 Dec 1
Externally published	Yes

ASJC Scopus subject areas

Physics and Astronomy(all)

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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.",

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T1 - Superconductivity of InN observed in the magnetoresistance at low temperature

AU - Inushima, T.

AU - Kato, N.

AU - Takenobu, T.

AU - Motokawa, M.

AU - Higashiwaki, M.

AU - Matsui, T.

PY - 2006/12/1

Y1 - 2006/12/1

N2 - 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.

AB - 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.

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Superconductivity of InN observed in the magnetoresistance at low temperature

Abstract

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