Ultrafast manipulation of topologically enhanced surface transport driven by mid-infrared and terahertz pulses in Bi2Se3

L. Luo; X. Yang; X. Liu; Z. Liu; C. Vaswani; D. Cheng; M. Mootz; X. Zhao; Y. Yao; C.-Z. Wang; K.-M. Ho; I. E. Perakis; M. Dobrowolska; J. K. Furdyna; J. Wang

doi:10.1038/s41467-019-08559-6

Nature Communications (Feb 2019)

Ultrafast manipulation of topologically enhanced surface transport driven by mid-infrared and terahertz pulses in Bi2Se3

L. Luo,
X. Yang,
X. Liu,
Z. Liu,
C. Vaswani,
D. Cheng,
M. Mootz,
X. Zhao,
Y. Yao,
C.-Z. Wang,
K.-M. Ho,
I. E. Perakis,
M. Dobrowolska,
J. K. Furdyna,
J. Wang

Affiliations

L. Luo: Department of Physics and Astronomy and Ames Laboratory-U.S. DOE, Iowa State University
X. Yang: Department of Physics and Astronomy and Ames Laboratory-U.S. DOE, Iowa State University
X. Liu: Department of Physics, University of Notre Dame
Z. Liu: Department of Physics and Astronomy and Ames Laboratory-U.S. DOE, Iowa State University
C. Vaswani: Department of Physics and Astronomy and Ames Laboratory-U.S. DOE, Iowa State University
D. Cheng: Department of Physics and Astronomy and Ames Laboratory-U.S. DOE, Iowa State University
M. Mootz: Department of Physics, University of Alabama at Birmingham
X. Zhao: Department of Physics and Astronomy and Ames Laboratory-U.S. DOE, Iowa State University
Y. Yao: Department of Physics and Astronomy and Ames Laboratory-U.S. DOE, Iowa State University
C.-Z. Wang: Department of Physics and Astronomy and Ames Laboratory-U.S. DOE, Iowa State University
K.-M. Ho: Department of Physics and Astronomy and Ames Laboratory-U.S. DOE, Iowa State University
I. E. Perakis: Department of Physics, University of Alabama at Birmingham
M. Dobrowolska: Department of Physics, University of Notre Dame
J. K. Furdyna: Department of Physics, University of Notre Dame
J. Wang: Department of Physics and Astronomy and Ames Laboratory-U.S. DOE, Iowa State University

DOI: https://doi.org/10.1038/s41467-019-08559-6
Journal volume & issue: Vol. 10, no. 1
pp. 1 – 9

Abstract

Read online

It remains challenging on how to selectively control terahertz conductivity at surface from the bulk contribution in topological insulators. Here, Luo et al. discover and manipulate topologically enhanced surface transport due to helical spin structure using mid-infrared and terahertz ultrafast photoexcitations.

Published in Nature Communications

ISSN: 2041-1723 (Online)
Publisher: Nature Portfolio
Country of publisher: United Kingdom
LCC subjects: Science
Website: https://www.nature.com/ncomms/

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