• 文献标题:   Remote Mesoscopic Signatures of Induced Magnetic Texture in Graphene
  • 文献类型:   Article
  • 作  者:   ARABCHIGAVKANI N, SOMPHONSANE R, RAMAMOORTHY H, HE G, NATHAWAT J, YIN S, BARUT B, HE K, RANDLE MD, DIXIT R, SAKANASHI K, AOKI N, ZHANG K, WANG L, MEI WN, DOWBEN PA, FRANSSON J, BIRD JP
  • 作者关键词:  
  • 出版物名称:   PHYSICAL REVIEW LETTERS
  • ISSN:   0031-9007 EI 1079-7114
  • 通讯作者地址:  
  • 被引频次:   0
  • DOI:   10.1103/PhysRevLett.126.086802
  • 出版年:   2021

▎ 摘  要

Mesoscopic conductance fluctuations are a ubiquitous signature of phase-coherent transport in small conductors, exhibiting universal character independent of system details. In this Letter, however, we demonstrate a pronounced breakdown of this universality, due to the interplay of local and remote phenomena in transport. Our experiments are performed in a graphene-based interaction-detection geometry, in which an artificial magnetic texture is induced in the graphene layer by covering a portion of it with a micromagnet. When probing conduction at some distance from this region, the strong influence of remote factors is manifested through the appearance of giant conductance fluctuations, with amplitude much larger than e(2)/h. This violation of one of the fundamental tenets of mesoscopic physics dramatically demonstrates how local considerations can be overwhelmed by remote signatures in phase-coherent conductors.