Spin effects in the magnetodrag between double quantum wells

Lok, J. G. S. and Kraus, S. and Pohlt, M. and Dietsche, W. and von Klitzing, K. and Wegscheider, Werner and Bichler, M. (2001) Spin effects in the magnetodrag between double quantum wells. PHYSICAL REVIEW B, 63 (4): 041305. ISSN 1098-0121, 1550-235X

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Abstract

We report on the selectivity to spin in a drag measurement. This selectivity to spin causes deep minima in the magnetodrag at odd filling factors for matched electron densities at magnetic fields and temperatures at which the hare spin energy is only one tenth of the temperature. For mismatched densities the selectivity causes a 1/B periodic oscillation, such that negative minima in the drag are observed whenever the majority spins at the Fermi energies of the two-dimensional electron gases are antiparallel, and positive maxims whenever the majority spins at the Fermi energies are parallel.

Item Type: Article
Uncontrolled Keywords: 2-DIMENSIONAL ELECTRON-SYSTEMS; COULOMB DRAG; DOUBLE-LAYER; PHASE-TRANSITIONS; COLLAPSE; EXCITATIONS; INTEGER; NU=2;
Subjects: 500 Science > 530 Physics
Divisions: Physics > Institute of Experimental and Applied Physics > Alumni or Retired Professors > Group Werner Wegscheider
Depositing User: Dr. Gernot Deinzer
Date Deposited: 16 Feb 2022 15:00
Last Modified: 16 Feb 2022 15:00
URI: https://pred.uni-regensburg.de/id/eprint/41809

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