About cookies on this site Our websites require some cookies to function properly (required). In addition, other cookies may be used with your consent to analyze site usage, improve the user experience and for advertising. For more information, please review your options. By visiting our website, you agree to our processing of information as described in IBM’sprivacy statement. To provide a smooth navigation, your cookie preferences will be shared across the IBM web domains listed here.
Publication
Physical Review B
Paper
Observation of valence-band Landau-level mixing by resonant magnetotunneling
Abstract
In magnetotunneling I(V,B) measurements on strained p-type Si/Si1-xGex double-barrier resonant tunneling structures we observe heavy-hole satellite peaks that correspond to tunneling with Δn=1 and 2 changes in the Landau index n. The relative intensity of the satellite peaks excludes scattering as a possible mechanism. We ascribe the Δn=1,2 satellites to elastic tunneling made possible by Landau-level mixing in the valence band predicted by the Luttinger Hamiltonian in a magnetic field. The satellite peak spacing yields the valence-band Landau-level structure in strained Si1-xGex quantum wells. © 1993 The American Physical Society.