Abstract
We report the direct measurement of the A1As conduction band dispersion near the band edge. The six lobes of its constant energy surface are much more spherical than previously supposed, with a ratio of major to minor axes of less than 2. The existence of a "camel back" is confirmed. The k·p interaction responsible for the camel back is found to be about three times the presently accepted value. A consequence is that above some critical electric field applied perpendicular to an A1As quantum well, the sub-band constant energy surface is rotated by 45°. We confirm this behavior experimentally in the same sample.
Original language | English |
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Article number | 205313 |
Pages (from-to) | 205313-1-205313-6 |
Journal | Physical Review B - Condensed Matter and Materials Physics |
Volume | 70 |
Issue number | 20 |
DOIs | |
State | Published - Nov 2004 |