Magnetic field quenching of miniband conduction in quasi-one-dimensional superlattices

Authors
Eaves, L Murphy, HM Nogaret, A Stoddart, ST Main, PC Henini, M Mori, N Hamaguchi, C Maude, DK Portal, JC
Citation
L. Eaves et al., Magnetic field quenching of miniband conduction in quasi-one-dimensional superlattices, PHYSICA B, 272(1-4), 1999, pp. 190-193
Citations number
9
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
PHYSICA B
ISSN journal
09214526 → ACNP
Volume
272
Issue
1-4
Year of publication
1999
Pages
190 - 193
Database
ISI
SICI code
0921-4526(199912)272:1-4<190:MFQOMC>2.0.ZU;2-E
Abstract
We investigate miniband conduction in GaAs/AlxGa1-xAs superlattices at low temperatures and at high magnetic fields up to 23 T. The fields are applied perpendicular to the tunnel barriers. The current flowing through the samp le is strongly suppressed by the magnetic field over the voltage range corr esponding to the miniband conduction peak. This effect is related to the fo rmation of quasi-one-dimensional Landau level minibands when the cyclotron energy exceeds the miniband width. (C) 1999 Elsevier Science B.V. All right s reserved.