The Library
In-plane magnetic field effect on hole cyclotron mass and gz factor in high-mobility SiGe/Ge/SiGe structures
Tools
Drichko, I. L., Malysh, V. A., Smirnov, I. Yu., Golub, L. E., Tarasenko, S. A., Suslov, A. V., Mironov, O. A., Kummer, M. and von Känel, H. (2014) In-plane magnetic field effect on hole cyclotron mass and gz factor in high-mobility SiGe/Ge/SiGe structures. Physical Review B (Condensed Matter and Materials Physics), Volume 90 (Number 12). doi:10.1103/PhysRevB.90.125436 ISSN 1098-0121.
Research output not available from this repository.
Request-a-Copy directly from author or use local Library Get it For Me service.
Official URL: http://dx.doi.org/10.1103/PhysRevB.90.125436
Abstract
The high-frequency (ac) conductivity of a high quality modulation doped GeSi/Ge/GeSi single quantum well structure with hole density p=6×1011cm−2 was measured by the surface acoustic wave (SAW) technique at frequencies of 30 and 85 MHz and magnetic fields B of up to 18 T in the temperature range of 0.3–5.8 K. The acoustic effects were also measured as a function of the tilt angle of the magnetic field with respect to the normal of the two-dimensional channel at T=0.3 K. It is shown that at the minima of the conductivity oscillations holes are localized on the Fermi level, and that there is a temperature domain in which the high-frequency conductivity in the bulk of the quantum well is of the activation nature. The analysis of the temperature dependence of the conductivity at odd filling factors enables us to determine the effective gz factor. It is shown that the in-plane component of the magnetic field leads to an increase of the cyclotron mass and to a reduction of the gz factor. We developed a microscopic theory of these effects for the heavy-hole states of the complex valence band in quantum wells which describes well the experimental findings.
Item Type: | Journal Article | ||||||
---|---|---|---|---|---|---|---|
Divisions: | Faculty of Science, Engineering and Medicine > Science > Physics | ||||||
Journal or Publication Title: | Physical Review B (Condensed Matter and Materials Physics) | ||||||
Publisher: | American Physical Society | ||||||
ISSN: | 1098-0121 | ||||||
Official Date: | 14 February 2014 | ||||||
Dates: |
|
||||||
Volume: | Volume 90 | ||||||
Number: | Number 12 | ||||||
DOI: | 10.1103/PhysRevB.90.125436 | ||||||
Status: | Peer Reviewed | ||||||
Publication Status: | Published | ||||||
Access rights to Published version: | Restricted or Subscription Access |
Request changes or add full text files to a record
Repository staff actions (login required)
View Item |