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- Title
Zero differential resistance in a double quantum well at high filling factors.
- Authors
Bykov, A.; Mozulev, E.; Vitkalov, S.
- Abstract
The differential resistance r in a GaAs double quantum well with two occupied size-quantization subbands have been studied at temperatures T = 1.6-4.2 K in magnetic fields B < 0.5 T. It has been found that differential resistance r vanishes at the maxima of magneto-intersubband oscillations with an increase in the direct current I. It has been shown that the discovered r ≈ 0 state appears under the condition 2 R E/ħω < 1/2, where R is the cyclotron radius of electrons at the Fermi level, E is the Hall electric field induced by the current I, and ω is the cyclotron frequency.
- Subjects
ELECTRIC resistance; QUANTUM wells; GEOMETRIC quantization; MAGNETIC fields; OSCILLATIONS; CYCLOTRONS; DIRECT currents
- Publication
JETP Letters, 2010, Vol 92, Issue 7, p475
- ISSN
0021-3640
- Publication type
Article
- DOI
10.1134/S0021364010190094