THz Magneto-Photoresponse Spectroscopy of Two-Dimensional Electrons in an InAs/InGaAs/InAlAs Inserted-Channel
THz Magneto-Photoresponse Spectroscopy of Two-Dimensional Electrons in an InAs/InGaAs/InAlAs Inserted-Channel
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InAs/InGaAs/InAlAs 插入通道中二维电子的太赫兹磁光响应光谱
DOI:
10.1007/s10762-014-0126-4
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发表时间:
2015
期刊:
影响因子:
--
通讯作者:
Wolfgang
中科院分区:
文献类型:
--
作者:
Pakmehr;Mehdi ; Khaetskii;Alexander ; McCombe;Bruce D. ; Chiatti;Olivio ; Fischer;Saskia F. ;Christian ; Hansen;Wolfgang
We have used THz magneto-photoresponse/transmission to measure various electronic parameters of a two-dimensional electron gas (2DEG) located primarily within an InAs inserted-channel and the surrounding InGaAs well in an asymmetric InAs/InGaAs/InAlAs inserted-well heterostructure in magnetic fields up to 10 T. We have developed an analytical approach to the photoresponse based on resonant heating of the 2DEG by cyclotron resonance (CR) absorption. The analysis incorporates a resonant T-profile mimicking the CR absorption, combined with the theoretical expression for quantized resistance oscillations of a 2DEG. Fitting of an individual set of PR data vs. magnetic field can in principle, provide g-factor, cyclotron effective mass, SdH scattering time, CR scattering time and carrier density of the 2DEs. This is a temperature differential technique, which leads to enhanced sensitivity to harmonic content of the Shubnikov-deHaas (S-dH) oscillations and thus to clearer spin-splitting of the Landau levels at lower fields than is possible in direct S-dH measurements at the same bath temperature. Results show an enhanced g-factor for electrons and large g-factor anisotropy.
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DOI:
--
发表时间:
1993
期刊:
Physical Review B (Condensed Matter)
影响因子:
--
作者:
Yang;Lin;Shanabrook;Waterman;Wagner;Moore
通讯作者:
Moore
DOI:
--
发表时间:
2000
期刊:
影响因子:
--
作者:
A. Richter;M. Koch;T. Matsuyama;C. Heyn;U. Merkt
通讯作者:
U. Merkt
DOI:
--
发表时间:
1995
期刊:
Physical Review B (Condensed Matter)
影响因子:
--
作者:
Kono;Lee;Salib;Hérold;Petrou;McCombe
通讯作者:
McCombe
DOI:
--
发表时间:
2013
期刊:
影响因子:
--
作者:
M. Pakmehr;V. R. Whiteside;N. Bhandari;R. Newrock;M. Cahay;B. McCombe
通讯作者:
B. McCombe
DOI:
10.1088/0022-3719/19/34/015
发表时间:
1986-12-10
期刊:
JOURNAL OF PHYSICS C-SOLID STATE PHYSICS
影响因子:
--
作者:
ISIHARA, A;SMRCKA, L
通讯作者:
SMRCKA, L