Optical detection of electron-depletion region surrounding metal electrode on a dilute two-dimensional electron gas

被引：0
作者：
Ihara, Toshiyuki [1 ,2 ]
Yoshita, Masahiro [1 ,2 ]
Akiyama, Hidefumi [1 ,2 ]
Pfeiffer, Loren N. [3 ]
West, Ken W. [3 ]
机构：
[1] Univ Tokyo, Inst Solid State Phys, Chiba 2778581, Japan
[2] CREST, JST, Chiba 2778581, Japan
[3] Bell Labs, Murray Hill, NJ 07974 USA
来源：
JAPANESE JOURNAL OF APPLIED PHYSICS | 2008年 / 47卷 / 06期
关键词：
micro-PL imaging; quantum well; modulation doping; two-dimensional electron gas; depletion region; ohmic contact;
D O I：
10.1143/JJAP.47.4496
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Microscopic photoluminescence images were measured on a dilute two-dimensional electron gas (2DEG) in an n-type modulation doped quantum well at 5K. We observed electron-depletion regions surrounding metal electrodes formed by annealing of soldered indium or evaporated AuGeNi. The difficulty of forming an ohmic contact to a dilute 2DEG was probably due to the depletion region separating the 2DEG from the metal electrode.
引用
收藏
页码：4496 / 4498
页数：3
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