Gate-controlled superconducting proximity effect in ultrathin graphite films

T. Sato; T. Moriki; S. Tanaka; A. Kanda; H. Goto; H. Miyazaki; S. Odaka; Y. Ootuka; K. Tsukagoshi; Y. Aoyagi

doi:10.1016/j.physe.2007.09.149

Gate-controlled superconducting proximity effect in ultrathin graphite films

T. Sato, T. Moriki, S. Tanaka, A. Kanda, H. Goto, H. Miyazaki, S. Odaka, Y. Ootuka, K. Tsukagoshi, Y. Aoyagi

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

16 Citations (Scopus)

Abstract

We experimentally investigated electrical transport in thin graphite films about 10 nm thick connected to superconducting leads. Proximity-induced superconductivity was observed and the critical supercurrent strongly depends on the gate voltage. From the maximum-to-minimum ratios of the critical supercurrent and the normal state resistance, we conclude that the major part of the supercurrent flows in a few graphene layers close to the gate electrode.

Original language	English
Pages (from-to)	1495-1497
Number of pages	3
Journal	Physica E: Low-Dimensional Systems and Nanostructures
Volume	40
Issue number	5
DOIs	https://doi.org/10.1016/j.physe.2007.09.149
Publication status	Published - 2008 Mar
Externally published	Yes

Keywords

Graphene
Graphite
Proximity effect
Superconductivity

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Atomic and Molecular Physics, and Optics
Condensed Matter Physics

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title = "Gate-controlled superconducting proximity effect in ultrathin graphite films",

abstract = "We experimentally investigated electrical transport in thin graphite films about 10 nm thick connected to superconducting leads. Proximity-induced superconductivity was observed and the critical supercurrent strongly depends on the gate voltage. From the maximum-to-minimum ratios of the critical supercurrent and the normal state resistance, we conclude that the major part of the supercurrent flows in a few graphene layers close to the gate electrode.",

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doi = "10.1016/j.physe.2007.09.149",

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T1 - Gate-controlled superconducting proximity effect in ultrathin graphite films

AU - Sato, T.

AU - Moriki, T.

AU - Tanaka, S.

AU - Kanda, A.

AU - Goto, H.

AU - Miyazaki, H.

AU - Odaka, S.

AU - Ootuka, Y.

AU - Tsukagoshi, K.

AU - Aoyagi, Y.

N1 - Funding Information: This work was partly supported by Grant-in-Aid for Scientific Research (A) (18201028) from the Ministry of Education, Culture, Sport, Science and Technology of Japan.

PY - 2008/3

Y1 - 2008/3

N2 - We experimentally investigated electrical transport in thin graphite films about 10 nm thick connected to superconducting leads. Proximity-induced superconductivity was observed and the critical supercurrent strongly depends on the gate voltage. From the maximum-to-minimum ratios of the critical supercurrent and the normal state resistance, we conclude that the major part of the supercurrent flows in a few graphene layers close to the gate electrode.

AB - We experimentally investigated electrical transport in thin graphite films about 10 nm thick connected to superconducting leads. Proximity-induced superconductivity was observed and the critical supercurrent strongly depends on the gate voltage. From the maximum-to-minimum ratios of the critical supercurrent and the normal state resistance, we conclude that the major part of the supercurrent flows in a few graphene layers close to the gate electrode.

KW - Graphene

KW - Graphite

KW - Proximity effect

KW - Superconductivity

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Gate-controlled superconducting proximity effect in ultrathin graphite films

Abstract

Keywords

ASJC Scopus subject areas

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