Title: Giant magneto-optical Raman effect in a layered transition metal compound

Abstract

Here, we report a dramatic change in the intensity of a Raman mode with applied magnetic field, displaying a gigantic magneto-optical effect. Using the nonmagnetic layered material MoS₂ as a prototype system, we demonstrate that the application of a magnetic field perpendicular to the layers produces a dramatic change in intensity for the out-of-plane vibrations of S atoms, but no change for the in-plane breathing mode. The distinct intensity variation between these two modes results from the effect of field-induced broken symmetry on Raman scattering cross-section. A quantitative analysis on the field-dependent integrated Raman intensity provides a unique method to precisely determine optical mobility. Our analysis is symmetry-based and material-independent, and thus the observations should be general and inspire a new branch of inelastic light scattering and magneto-optical applications.

Authors:

Ji, Jianting ^[1]; Zhang, Anmin ^[1]; Fan, Jiahe ^[1]; Li, Yuesheng ^[1]; Wang, Xiaoqun ^[2]; Zhang, Jiandi ^[3]; Plummer, E. W. ^[3]; Zhang, Qingming ^[4]

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+ Show Author Affiliations

1. Department of Physics, Beijing Key Laboratory of Opto-Electronic Functional Materials &, Micro-Nano Devices, Renmin University of China, Beijing 100872, People’s Republic of China,
2. Department of Physics, Beijing Key Laboratory of Opto-Electronic Functional Materials &, Micro-Nano Devices, Renmin University of China, Beijing 100872, People’s Republic of China,, Department of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai 200240, People’s Republic of China,, Collaborative Innovation Center of Advanced Microstructures, Nanjing 210093, People’s Republic of China,
3. Department of Physics and Astronomy, Louisiana State University, Baton Rouge, LA 70808
4. Department of Physics, Beijing Key Laboratory of Opto-Electronic Functional Materials &, Micro-Nano Devices, Renmin University of China, Beijing 100872, People’s Republic of China,, Collaborative Innovation Center of Advanced Microstructures, Nanjing 210093, People’s Republic of China,

Publication Date:

Tue Feb 16 00:00:00 EST 2016

Research Org.:

Louisiana State Univ., Baton Rouge, LA (United States)

Sponsoring Org.:

USDOE Office of Science (SC), Basic Energy Sciences (BES)

OSTI Identifier:

1238205

Alternate Identifier(s):

OSTI ID: 1348211

Grant/Contract Number:  

DOE DE-SC0002136; SC0002136

Resource Type:

Published Article

Journal Name:

Proceedings of the National Academy of Sciences of the United States of America

Additional Journal Information:

Journal Name: Proceedings of the National Academy of Sciences of the United States of America Journal Volume: 113 Journal Issue: 9; Journal ID: ISSN 0027-8424

Publisher:

Proceedings of the National Academy of Sciences

Country of Publication:

United States

Language:

English

Subject:

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; 36 MATERIALS SCIENCE; Raman; layered; magneto-optical; broken symmetry; phonon