Coherent Hall effect in a semiconductor superlattice

Coherent Hall effect in a semiconductor superlattice

The coherent Hall effect denotes the transient Hall response of impulsively excited coherent charge-carrier wave packets in a solid. We report the first experimental study of this phenomenon (i) using a semiconductor superlattice in crossed electric and magnetic fields as a model for three-dimension...

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Bibliographic Details
Published in:Physical review letters Vol. 88; no. 8; p. 086801
Main Authors: Bauer, Tobias, Kolb, Johanna, Hummel, Anne Beate, Roskos, Hartmut G, Kosevich, Yuriy, Köhler, Klaus
Format: Journal Article
Language:English
Published: United States 25-02-2002
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Summary:The coherent Hall effect denotes the transient Hall response of impulsively excited coherent charge-carrier wave packets in a solid. We report the first experimental study of this phenomenon (i) using a semiconductor superlattice in crossed electric and magnetic fields as a model for three-dimensional materials and (ii) employing a contactless optoelectronic technique to probe the transient currents. Two field regimes with distinctly different oscillatory wave packet dynamics are found, separated from each other by a transition region where all oscillations are suppressed.
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content type line 23
ISSN:0031-9007
1079-7114
DOI:10.1103/PhysRevLett.88.086801