Zero bias conductance peak in InAs nanowire coupled to superconducting electrodes

Title
Zero bias conductance peak in InAs nanowire coupled to superconducting electrodes
Authors
송진동Nam-Hee KimYun-Sok ShinHong-Seok KimYong-Joo Doh
Issue Date
2018-04
Publisher
Current applied physics
Citation
VOL 18, NO 4-387
Abstract
We report the occurrence of the zero-bias conductance peak (ZBCP) in an InAs nanowire coupled to PbIn superconductors with varying temperature, bias voltage, and magnetic field. The ZBCP is suppressed with increasing temperature and bias voltage above the Thouless energy of the nanowire. Applying a magnetic field also diminishes the ZBCP when the resultant magnetic flux reaches the magnetic flux quantum h/2e. Our observations are consistent with theoretical expectations of reflectionless tunneling, in which the phase coherence between an electron and its Andreev-reflected hole induces the ZBCP as long as time-reversal symmetry is preserved.
URI
http://pubs.kist.re.kr/handle/201004/68234
ISSN
1567-1739
Appears in Collections:
KIST Publication > Article
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