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Tunneling spectroscopy of energy levels in wide quantum wells in tilted magnetic fields

Research output: Contribution to journalComment/debate

Published

Journal publication date15/04/1992
JournalPhysical Review B
Journal number15
Volume45
Number of pages3
Pages8749-8751
Original languageEnglish

Abstract

Using resonant-tunneling spectroscopy, we have studied the energy levels in wide quantum wells (of 60 and 120 nm well width) of double-barrier resonant-tunneling devices in high magnetic fields with a small tilt angle-alpha with respect to the growth axis. In the limit of high magnetic fields, the resonance spacing between successive levels becomes independent of the magnetic field and is cos2-alpha times the spacing at zero field. In this limit, these results can be understood quasiclassically by considering the motion of the particles to follow the magnetic-field lines inside of a quantum well with an effective thickness w/cos-alpha.