Magnetotransport in p-type Ge quantum well narrow wire arrays
Magnetotransport in p-type Ge quantum well narrow wire arrays
复制标题
p型Ge量子阱窄线阵列中的磁输运
DOI:
10.1063/1.4919053
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发表时间:
2015
影响因子:
4
通讯作者:
Newton P
中科院分区:
文献类型:
--
作者:
Newton P
We report magnetotransport measurements of a SiGe heterostructure containing a 20 nm p-Ge quantum well with a mobility of 800 000 cm{sup 2} V{sup −1} s{sup −1}. By dry etching arrays of wires with widths between 1.0 μm and 3.0 μm, we were able to measure the lateral depletion thickness, built-in potential, and the phase coherence length of the quantum well. Fourier analysis does not show any Rashba related spin-splitting despite clearly defined Shubnikov-de Haas oscillations being observed up to a filling factor of ν = 22. Exchange-enhanced spin-splitting is observed for filling factors below ν = 9. An analysis of boundary scattering effects indicates lateral depletion of the hole gas by 0.5 ± 0.1 μm from the etched germanium surface. The built-in potential is found to be 0.25 ± 0.04 V, presenting an energy barrier for lateral transport greater than the hole confinement energy. A large phase coherence length of 3.5 ± 0.5 μm is obtained in these wires at 1.7 K.
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DOI:
--
发表时间:
2005
期刊:
影响因子:
--
作者:
B. Piot;D. Maude;M. Henini;Z. Wasilewski;K. Friedland;R. Hey;K. Ploog;A. Toropov;R. Airey;G. Hill
通讯作者:
G. Hill
影响因子:
1.7
作者:
ANDO, T;UEMURA, Y
通讯作者:
UEMURA, Y
影响因子:
3.7
作者:
Loren, Eric J.;Rioux, J.;Smirl, Arthur L.
通讯作者:
Smirl, Arthur L.
DOI:
10.1109/jproc.2003.811799
发表时间:
2003
期刊:
International Conference onIndium Phosphide and Related Materials, 2003.
影响因子:
--
作者:
E. Yablonovitch;Hong;H. Kosaka;H. Robinson;D. Rao;T. Szkopek
通讯作者:
T. Szkopek
影响因子:
4
作者:
Dobbie, A.;Myronov, M.;Leadley, D. R.
通讯作者:
Leadley, D. R.