Haavasoja, T. ; Stormer, H. L. ; Bishop, D. J. ; Narayanamurti, V. ; Gossard, A. C. ; Wiegmann, W. (1984) Magnetization measurements on a two-dimensional electron system Surface Science, 142 (1-3). pp. 294-297. ISSN 0039-6028
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Official URL: http://linkinghub.elsevier.com/retrieve/pii/003960...
Related URL: http://dx.doi.org/10.1016/0039-6028(84)90325-X
Abstract
We have measured the De Haas-Van Alphen oscillations in a 2D electron system of GaAs-(AlGa)As superlattices from 0 to 5 T at 1.5 K. The amplitude of the oscillations together with known density distribution implies for the Landau levels a half-width of ~2 meV. which roughly agrees with the width calculated from the zero field mobility of 19000cm2/V.s . We have observed eddy current relaxation times up to 300 s at T~0.4 K suggesting the resistivity of the material at a quantized Hall plateau to be as low as ρxx≈- 10-10 Ω corresponding to a 3D resistivity of ρ ≈ 10-16 Ω cm.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to Elsevier Science. |
| ID Code: | 30690 |
| Deposited On: | 23 Dec 2010 12:48 |
| Last Modified: | 11 Jun 2011 08:04 |
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