Controlling edge current by irradiation of terahertz polarization-shaped pulses
Project/Area Number |
26610079
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Research Category |
Grant-in-Aid for Challenging Exploratory Research
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Allocation Type | Multi-year Fund |
Research Field |
Condensed matter physics I
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Research Institution | University of Tsukuba |
Principal Investigator |
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Co-Investigator(Kenkyū-buntansha) |
MISAWA Kazuhiko 東京農工大学, 工学研究院, 教授 (80251396)
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Project Period (FY) |
2014-04-01 – 2016-03-31
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Project Status |
Completed (Fiscal Year 2015)
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Budget Amount *help |
¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000)
Fiscal Year 2015: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2014: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
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Keywords | 光照射効果 / 二次元電子系 / 半導体 |
Outline of Final Research Achievements |
Recently developed polarization shaping method of terahertz pulses enables us to control the electric field vectors arbitrary. In this research project, we have investigated the optical excitation effects in a two-dimensional electron gas by irradiation of an optical field with polarization vector rotating in THz regime at zero external magnetic field at low temperatures. We have found that the induced photo-current is not symmetric with respect to the direction of the rotation of the polarization vector. The results of our research project should promote further investigations of symmetry breaking phenomena due to optical excitations.
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Report
(3 results)
Research Products
(10 results)
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[Journal Article] Circularly polarized near-field scanning optical microscope for investigations of edge states of a two-dimensional electron system2015
Author(s)
Shintaro Nomura, Syuhei Mamyouda, Hironori Ito, Yusuke Shibata, Tomoya Ohira, Luno Yoshikawa, Youiti Ootuka, Satoshi Kashiwaya, Masumi Yamaguchi, Hiroyuki Tamura, Tatsushi Akazaki
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Journal Title
Appl. Phys. A
Volume: 121
Issue: 4
Pages: 1341-1345
DOI
NAID
Related Report
Peer Reviewed / Open Access
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[Presentation] 光誘起端状態の検出に向けて2015
Author(s)
野村晋太郎
Organizer
東北大学電気通信研究所共同プロジェクト研究会
Place of Presentation
ベルサンピアみやぎ泉(宮城県黒川郡大和町)
Year and Date
2015-10-08
Related Report
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