MAGNETIC-FIELD SENSITIVITY OF THE COULOMB ANOMALY IN THE CONDUCTANCE OF A PHASE-COHERENT DISORDERED 2-DIMENSIONAL ELECTRON-GAS

Authors
DENHARTOG SG VANDERMOLEN SJ VANWEES BJ KLAPWIJK TM BORGHS G
Citation
Sg. Denhartog et al., MAGNETIC-FIELD SENSITIVITY OF THE COULOMB ANOMALY IN THE CONDUCTANCE OF A PHASE-COHERENT DISORDERED 2-DIMENSIONAL ELECTRON-GAS, Solid-state electronics, 42(7-8), 1998, pp. 1093-1097
Citations number
26
Categorie Soggetti
Engineering, Eletrical & Electronic","Physics, Applied","Physics, Condensed Matter
Journal title
Solid-state electronics → ACNP
ISSN journal
00381101
Volume
42
Issue
7-8
Year of publication
1998
Pages
1093 - 1097
Database
ISI
SICI code
0038-1101(1998)42:7-8<1093:MSOTCA>2.0.ZU;2-G
Abstract
We have studied the Coulomb anomaly in the conductance of a phase-cohe rent disordered 2-dimensional electron gas. Its average magnitude of d elta G(EEI)approximate to - 0.3 e(2)/h is obtained by applying a bias voltage to suppress the Coulomb anomaly. This Coulomb anomaly is suppr essed by a parallel magnetic field in contrast to theoretical predicti ons. Surprisingly, the magnitude of this Coulomb anomaly exhibits repr oducible fluctuations in perpendicular magnetic fields on a magnetic f ield scale much larger than that for universal conductance fluctuation s. (C) 1998 Elsevier Science Ltd. All rights reserved.