BROWSE

Related Scientist

Park, Sun Gyu's photo.

Park, Sun Gyu
원자제어 저차원 전자계 연구단
more info

ITEM VIEW & DOWNLOAD

Anisotropic transport induced by DC electrical current bias near the critical current

Cited 0 time in webofscience Cited 0 time in scopus
11 Viewed 0 Downloaded
Title
Anisotropic transport induced by DC electrical current bias near the critical current
Author(s)
Junghyun Shin; Sungyu Park; Eunseong Kim
Subject
SUPERCONDUCTOR-INSULATOR TRANSITION, ; VORTEX STATE, ; DRIVEN, ; MOTION
Publication Date
2020-10
Journal
SCIENTIFIC REPORTS, v.10, no.1, pp.16841
Publisher
NATURE PUBLISHING GROUP
Abstract
© 2020, The Author(s). We investigated the transport characteristics of a square shape superconducting Ta thin film under DC electrical current bias along the diagonal direction. The resistance parallel (R∥) and perpendicular (R⊥) to the DC current, IDC, is measured with various magnetic fields. R∥ and R⊥ show contrasting dependence on IDC. First, the critical current of R∥ is smaller than that of R⊥. Second, R⊥ shows an unexpected reduction at current bias where R∥ shows a rapid increase near the transition from a flux flow state to a normal state. The intriguing anisotropic transport characteristics can be understood by the inhomogeneous current density profile over the square sample. Diagonal DC current induces an anisotropic current density profile where the current density is high near the biasing electrode and low at the center of the sample. Accordingly, the electrical transport in the perpendicular direction could remain less affected even near the critical current of R∥, which leads to the higher critical current in R⊥. Complicated conduction profile may also allow the anomalous reduction in the R⊥ before finally shifting to the normal state
URI
https://pr.ibs.re.kr/handle/8788114/7603
DOI
10.1038/s41598-020-73876-6
ISSN
2045-2322
Appears in Collections:
Center for Artificial Low Dimensional Electronic Systems(원자제어 저차원 전자계 연구단) > 1. Journal Papers (저널논문)
Files in This Item:
There are no files associated with this item.

qrcode

  • facebook

    twitter

  • Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.
해당 아이템을 이메일로 공유하기 원하시면 인증을 거치시기 바랍니다.

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

Browse