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Remote Mesoscopic Signatures of Induced Magnetic Texture in Graphene.
Arabchigavkani, N; Somphonsane, R; Ramamoorthy, H; He, G; Nathawat, J; Yin, S; Barut, B; He, K; Randle, M D; Dixit, R; Sakanashi, K; Aoki, N; Zhang, K; Wang, L; Mei, W-N; Dowben, P A; Fransson, J; Bird, J P.
Afiliação
  • Arabchigavkani N; Department of Physics, University at Buffalo, the State University of New York, Buffalo, New York 14260, USA.
  • Somphonsane R; Department of Physics, King Mongkut's Institute of Technology Ladkrabang, Bangkok 10520, Thailand.
  • Ramamoorthy H; Department of Electronics Engineering, King Mongkut's Institute of Technology Ladkrabang, Bangkok 10520, Thailand.
  • He G; Department of Electrical Engineering, University at Buffalo, the State University of New York, Buffalo, New York 14260, USA.
  • Nathawat J; Department of Electrical Engineering, University at Buffalo, the State University of New York, Buffalo, New York 14260, USA.
  • Yin S; Department of Electrical Engineering, University at Buffalo, the State University of New York, Buffalo, New York 14260, USA.
  • Barut B; Department of Physics, University at Buffalo, the State University of New York, Buffalo, New York 14260, USA.
  • He K; Department of Electrical Engineering, University at Buffalo, the State University of New York, Buffalo, New York 14260, USA.
  • Randle MD; Department of Electrical Engineering, University at Buffalo, the State University of New York, Buffalo, New York 14260, USA.
  • Dixit R; Department of Electrical Engineering, University at Buffalo, the State University of New York, Buffalo, New York 14260, USA.
  • Sakanashi K; Department of Materials Science, Chiba University, Chiba 263-8522, Japan.
  • Aoki N; Department of Materials Science, Chiba University, Chiba 263-8522, Japan.
  • Zhang K; Department of Materials Science and Engineering, University of Science and Technology of China, Hefei, Anhui 230026, China.
  • Wang L; Department of Materials Science and Engineering, University of Science and Technology of China, Hefei, Anhui 230026, China.
  • Mei WN; Department of Physics, University of Nebraska Omaha, Omaha, Nebraska 68182, USA.
  • Dowben PA; Department of Physics and Astronomy, Theodore Jorgensen Hall, University of Nebraska Lincoln, Lincoln, Nebraska 68588-0299, USA.
  • Fransson J; Department of Physics and Astronomy, Uppsala University, Box 516, SE-751 21 Uppsala, Sweden.
  • Bird JP; Department of Electrical Engineering, University at Buffalo, the State University of New York, Buffalo, New York 14260, USA.
Phys Rev Lett ; 126(8): 086802, 2021 Feb 26.
Article em En | MEDLINE | ID: mdl-33709762
ABSTRACT
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.
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Texto completo: 1 Base de dados: MEDLINE Idioma: En Ano de publicação: 2021 Tipo de documento: Article
Texto completo
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Texto completo: 1 Base de dados: MEDLINE Idioma: En Ano de publicação: 2021 Tipo de documento: Article