Magnetic quantum ratchet effect in graphene

被引：0

作者：

Ganichev, S. D. ^{[1
]}

Tarasenko, S. A. ^{[2
]}

Olbrich, P. ^{[1
]}

Karch, J. ^{[1
]}

Hirmer, M. ^{[1
]}

Mueller, F. ^{[1
]}

Gmitra, M. ^{[1
]}

Fabian, J. ^{[1
]}

Yakimova, R. ^{[3
]}

Lara-Avila, S. ^{[4
]}

Kubatkin, S. ^{[4
]}

Wang, M. ^{[5
]}

Vajtai, R. ^{[5
]}

Ajayan, P. M. ^{[5
]}

Kono, J. ^{[5
]}

Drexler, C. ^{[1
]}

机构：

[1] Univ Regensburg, Terahertz Ctr, D-93040 Regensburg, Germany

[2] AF Ioffe Phys Tech Inst, Russian Acad Sci, St Petersburg 194021, Russia

[3] Linkoping Univ, Dept Phys Chem & Biol, S-58183 Linkoping, Sweden

[4] Chalmers, S-41296 Gothenburg, Sweden

[5] Rice Univ, Smalley Inst Nanoscale Sci & Technol, Houston, TX 77005 USA

来源：

2013 38TH INTERNATIONAL CONFERENCE ON INFRARED, MILLIMETER, AND TERAHERTZ WAVES (IRMMW-THZ) | 2013年

关键词：

D O I：

暂无

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

We report on the observation of magnetic quantum ratchet (MQR) effect induced by electric field of terahertz radiation in single-layer graphene samples subjected to an in-plane magnetic field. We show that the dc electric current stems from the orbital asymmetry of the Dirac fermions induced by an in-plane magnetic field, while the periodic driving comes from terahertz radiation. A microscopic theory of the observed effect is developed being in a good qualitative agreement with the experiment. The observation of the ratchet transport in the purest possible two-dimensional system indicates that the orbital effects may appear and be substantial in other 2D crystals, such as boron nitride, molybdenum dichalcogenides, and related heterostructures. The measurable orbital effects in the presence of an in-plane magnetic field give strong evidence for the existence of structure inversion asymmetry in graphene.

引用

页数：3

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