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			<titleStmt><title level='a'>Temperature-dependent polarized Raman scattering in candidate topological superconductor 2M-WS &lt;sub&gt;2&lt;/sub&gt;</title></titleStmt>
			<publicationStmt>
				<publisher>IOP Science</publisher>
				<date>02/26/2026</date>
			</publicationStmt>
			<sourceDesc>
				<bibl> 
					<idno type="par_id">10683630</idno>
					<idno type="doi">10.1088/2053-1583/ae4760</idno>
					<title level='j'>2D Materials</title>
<idno>2053-1583</idno>
<biblScope unit="volume">13</biblScope>
<biblScope unit="issue">2</biblScope>					

					<author>Sabin Gautam</author><author>Gaihua Ye</author><author>Cynthia Nnokwe</author><author>John Samuel</author><author>A_K_M Manjur Hossain</author><author>Wenyong Wang</author><author>John Ackerman</author><author>Brian M Leonard</author><author>Stephen B Bayne</author><author>Jifa Tian</author><author>Rui He</author>
				</bibl>
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			<abstract><ab><![CDATA[<title>Abstract</title> <p>The monoclinic 2M phase of tungsten disulfide (2M-WS<sub>2</sub>) has emerged as a promising platform for topological superconductivity, combining topological surface states, anisotropic thermoelectric response, and superconductivity with a critical temperature of ∼8.8K. A detailed understanding of its electron–phonon coupling and phonon anharmonicity is, however, still lacking. Here, we investigate the phonon properties of few-layer 2M-WS<sub>2</sub>as functions of laser power, temperature, polarization, and magnetic field using polarized Raman spectroscopy down to 12.5 K. We uncover an unusual, non-linear temperature dependence of the Raman shifts in selected modes, consistent with strong, mode-dependent electron–phonon interactions that dominate over phonon–phonon scattering at low temperatures. Angle-resolved polarized Raman measurements further reveal a pronounced change in the polarization behavior of the<inline-formula><tex-math><CDATA/></tex-math><math overflow='scroll'><mrow><mrow><msub><mi>A</mi><mi>g</mi></msub></mrow></mrow></math></inline-formula>(4) mode at ∼316cm<sup>−1</sup>upon cooling, indicating a modification of the underlying lattice and electronic anisotropy. In contrast, the applied magnetic field has a negligible influence on the Raman response over the measured temperature range. Together, these results advance the microscopic understanding of vibrational dynamics and electron–phonon coupling in few-layer 2M-WS<sub>2</sub>and provide important insight into the lattice-electronic interplay relevant for its unconventional superconductivity and potential quantum and thermoelectric device applications.</p>]]></ab></abstract>
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