Open Access System for Information Sharing

Login Library

 

Article
Cited 15 time in webofscience Cited 16 time in scopus
Metadata Downloads

Polarized Raman Spectra and Complex Raman Tensors of Antiferromagnetic Semiconductor CrPS4 SCIE SCOPUS

Title
Polarized Raman Spectra and Complex Raman Tensors of Antiferromagnetic Semiconductor CrPS4
Authors
Kim, SujinLee, JinhwanLee, ChangguRyu, Sunmin
Date Issued
2021-02
Publisher
AMER CHEMICAL SOC
Abstract
Chromium thiophosphate (CrPS4), a monoclinic crystal of C-2(3) space group, is a ternary-layered semiconductor with an optical band gap of 1.4 eV and exhibits antiferromagnetism below 36 K. Despite its potential in optoelectronic and magnetic applications, the symmetry of its lattice vibrations has not been systematically studied. In this work, we performed polarized Raman spectroscopy of bulk CrPS4 using three different excitation wavelengths of 457, 514, and 633 nm. High-quality crystals grown by the chemical vapor transport method were mechanically exfoliated or polished to expose three orthogonal crystallographic facets. Polarized Raman spectra were obtained in parallel and cross configurations by rotating samples about the surface normal to each of the facets. Among 33 Raman active modes (16 A and 17 B) at the Brillouin zone center, 19 (8) peaks observed in the parallel (cross) configuration were assigned as A (B) modes. Complex-valued Raman tensors were determined for 7 major A modes using the angle-dependent Raman spectra of the three facets. The results can also be used in determining the crystallographic orientations of CrPS4 unequivocally.
URI
https://oasis.postech.ac.kr/handle/2014.oak/106655
DOI
10.1021/acs.jpcc.0c09938
ISSN
1932-7447
Article Type
Article
Citation
JOURNAL OF PHYSICAL CHEMISTRY C, vol. 125, no. 4, page. 2691 - 2698, 2021-02
Files in This Item:
There are no files associated with this item.

qr_code

  • mendeley

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

Related Researcher

Researcher

류순민RYU, SUNMIN
Dept of Chemistry
Read more

Views & Downloads

Browse