Measurements of weak localization of graphene in inhomogeneous magnetic fields
Artikel i vetenskaplig tidskrift, 2015

Weak localization in graphene is studied in inhomogeneous magnetic fields. To generate the inhomogeneous field, a thin film of type-II superconducting niobium is put in close proximity to graphene. A deviation from the ordinary quadratic weak localization behavior is observed at low fields. We attribute this to the inhomogeneous field caused by vortices in the superconductor. The deviation, which depends on the carrier concentration in graphene, can be tuned by the gate voltage. In addition, collective vortex motion, known as vortex avalanches, is observed through magnetoresistance measurements of graphene.

Physics

films

p389

v49

electrons

1989

physical review b

im ak

im ak

1994

jetp letters

magnetoresistance

flux tubes

avalanches

v50

p5749

Författare

Niclas Lindvall

Chalmers, Mikroteknologi och nanovetenskap (MC2), Kvantkomponentfysik

A. Shivayogimath

Danmarks Tekniske Universitet (DTU)

Avgust Yurgens

Chalmers, Mikroteknologi och nanovetenskap (MC2), Kvantkomponentfysik

JETP Letters

0021-3640 (ISSN) 1090-6487 (eISSN)

Vol. 102 6 367-371

Ämneskategorier

Fysik

DOI

10.1134/s0021364015180083

Mer information

Senast uppdaterat

2018-02-28