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dc.contributor.authorLi, Peilingen_US
dc.contributor.authorDeng, Yaen_US
dc.contributor.authorHsu, Chuang-Hanen_US
dc.contributor.authorZhu, Chaoen_US
dc.contributor.authorCui, Jianen_US
dc.contributor.authorYang, Xueen_US
dc.contributor.authorZhou, Jiadongen_US
dc.contributor.authorHung, Yi-Chunen_US
dc.contributor.authorFan, Jieen_US
dc.contributor.authorJi, Zhongqingen_US
dc.contributor.authorQu, Fanmingen_US
dc.contributor.authorShen, Jieen_US
dc.contributor.authorYang, Changlien_US
dc.contributor.authorJing, Xiunianen_US
dc.contributor.authorLin, Hsinen_US
dc.contributor.authorLiu, Zhengen_US
dc.contributor.authorLu, Lien_US
dc.contributor.authorLiu, Guangtongen_US
dc.identifier.citationLi, P., Deng, Y., Hsu, C., Zhu, C., Cui, J., Yang, X., Zhou, J., Hung, Y., Fan, J., Ji, Z., Qu, F., Shen, J., Yang, C., Jing, X., Lin, H., Liu, Z., Lu, L. & Liu, G. (2021). Dimensionality-dependent type-II Weyl semimetal state in Mo₀.₂₅W₀.₇₅Te₂. Physical Review B, 104(8), 085423-.
dc.description.abstractWeyl nodes and Fermi arcs in type-II Weyl semimetals (WSMs) have led to lots of exotic transport phenomena. Recently, Mo$_{0.25}$W$_{0.75}$Te$_{2}$ has been established as a type-II WSM with Weyl points located near Fermi level, which offers an opportunity to study its intriguing band structure by electrical transport measurements. Here, by selecting a special sample with the thickness gradient across two- (2D) and three-dimensional (3D) regime, we show strong evidences that Mo$_{0.25}$W$_{0.75}$Te$_{2}$ is a type-II Weyl semimetal by observing the following two dimensionality-dependent transport features: 1) A chiral-anomaly-induced anisotropic magneto-conductivity enhancement, proportional to the square of in-plane magnetic field (B$_{in}$$^{2}$); 2) An additional quantum oscillation with thickness-dependent phase shift. Our theoretical calculations show that the observed quantum oscillation originates from a Weyl-orbit-like scenario due to the unique band structure of Mo$_{0.25}$W$_{0.75}$Te$_{2}$. The in situ dimensionality-tuned transport experiment offers a new strategy to search for type-II WSMs.en_US
dc.description.sponsorshipMinistry of Education (MOE)en_US
dc.description.sponsorshipNational Research Foundation (NRF)en_US
dc.relation.ispartofPhysical Review Ben_US
dc.rights© 2021 American Physical Society. All rights reserved. This paper was published in Physical Review B and is made available with permission of American Physical Society.en_US
dc.titleDimensionality-dependent type-II Weyl semimetal state in Mo₀.₂₅W₀.₇₅Te₂en_US
dc.typeJournal Articleen
dc.contributor.schoolSchool of Materials Science and Engineeringen_US
dc.description.versionSubmitted/Accepted versionen_US
dc.subject.keywordsIn-Plane Magnetic Fieldsen_US
dc.subject.keywordsElectrical Transport Measurementsen_US
dc.description.acknowledgementThis work has been supported by the National Basic Research Program of China from the MOST under Grants No. 2016YFA0300601 and No. 2015CB921402; by the National Natural Science Foundation of China under Grants No. 11527806 and No. 11874406; by the Beijing Municipal Science & Technology Commission of China under Grant No. Z191100007219008; by Beijing Academy of Quantum Information Sciences under Grant No. Y18G08; by the Strategic Priority Research Program of the Chinese Academy of Sciences under Grant No. XDB33010300; and by the Synergic Extreme Condition User Facility. Research in Singapore was financially supported by MOE Tier 1 Grant No. RG4/17, MOE Tier 2 Grant No. MOE2016-T2-1-131, and Singapore National Research Foundation under NRF Award No. NRFNRFF2013-08. This research was supported by the Singapore Ministry of Education under its Tier 2 MOE2017-T2-2-136, Tier 3 MOE2018-T3-1-002, and by the National Research Foundation under its Singapore program NRF-CRP21-2018- 0007 and NRF-CRP22-2019-0060. H.L. acknowledges the support by the Ministry of Science and Technology (MOST) in Taiwan under Grant No. MOST 109-2112-M-001-014- MY3.en_US
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