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Title: Near-field infrared spectroscopy of monolayer MnPS 3

Abstract

We measured the near-field infrared response of MnPS 3 in bulk, few-, and single-layer form and compared our findings with traditional far-field vibrational spectroscopies, a symmetry analysis, and first-principles lattice dynamics calculations. Furthermore, trends in the B u mode near 450cm –1 are striking, with the disappearance of this structure in the thinnest sheets. Combined with the amplified response of the activated Ag mode and analysis of the A u + B u features, we find that symmetry is unexpectedly increased in few- and single-sheet MnPS 3 due to a restoration of the threefold axes of rotation. Monoclinicity in this system is therefore a consequence of the long-range stacking pattern and temperature rather than local structure.

Authors:
 [1]; ORCiD logo [2];  [1];  [1];  [1];  [3];  [4];  [2];  [2]; ORCiD logo [1]
  1. Univ. of Tennessee, Knoxville, TN (United States)
  2. Rutgers Univ., Piscataway, NJ (United States)
  3. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
  4. Brookhaven National Lab. (BNL), Upton, NY (United States)
Publication Date:
Research Org.:
Brookhaven National Lab. (BNL), Upton, NY (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
OSTI Identifier:
1566879
Alternate Identifier(s):
OSTI ID: 1558692
Report Number(s):
BNL-212141-2019-JAAM
Journal ID: ISSN 2469-9950; PRBMDO
Grant/Contract Number:  
SC0012704; FG02-01ER45885; AC02-05CH11231
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review B
Additional Journal Information:
Journal Volume: 100; Journal Issue: 7; Journal ID: ISSN 2469-9950
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE

Citation Formats

Neal, Sabine N., Kim, Heung-Sik, Smith, Kevin A., Haglund, Amanda V., Mandrus, David G., Bechtel, Hans A., Carr, G. Lawrence, Haule, Kristjan, Vanderbilt, David, and Musfeldt, Janice L. Near-field infrared spectroscopy of monolayer MnPS3. United States: N. p., 2019. Web. doi:10.1103/PhysRevB.100.075428.
Neal, Sabine N., Kim, Heung-Sik, Smith, Kevin A., Haglund, Amanda V., Mandrus, David G., Bechtel, Hans A., Carr, G. Lawrence, Haule, Kristjan, Vanderbilt, David, & Musfeldt, Janice L. Near-field infrared spectroscopy of monolayer MnPS3. United States. doi:10.1103/PhysRevB.100.075428.
Neal, Sabine N., Kim, Heung-Sik, Smith, Kevin A., Haglund, Amanda V., Mandrus, David G., Bechtel, Hans A., Carr, G. Lawrence, Haule, Kristjan, Vanderbilt, David, and Musfeldt, Janice L. Thu . "Near-field infrared spectroscopy of monolayer MnPS3". United States. doi:10.1103/PhysRevB.100.075428.
@article{osti_1566879,
title = {Near-field infrared spectroscopy of monolayer MnPS3},
author = {Neal, Sabine N. and Kim, Heung-Sik and Smith, Kevin A. and Haglund, Amanda V. and Mandrus, David G. and Bechtel, Hans A. and Carr, G. Lawrence and Haule, Kristjan and Vanderbilt, David and Musfeldt, Janice L.},
abstractNote = {We measured the near-field infrared response of MnPS3 in bulk, few-, and single-layer form and compared our findings with traditional far-field vibrational spectroscopies, a symmetry analysis, and first-principles lattice dynamics calculations. Furthermore, trends in the Bu mode near 450cm–1 are striking, with the disappearance of this structure in the thinnest sheets. Combined with the amplified response of the activated Ag mode and analysis of the Au + Bu features, we find that symmetry is unexpectedly increased in few- and single-sheet MnPS3 due to a restoration of the threefold axes of rotation. Monoclinicity in this system is therefore a consequence of the long-range stacking pattern and temperature rather than local structure.},
doi = {10.1103/PhysRevB.100.075428},
journal = {Physical Review B},
number = 7,
volume = 100,
place = {United States},
year = {2019},
month = {8}
}

Journal Article:
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