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강상관계 물질 연구단
강상관계 물질 연구단
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Polymorphic Spin, Charge, and Lattice Waves in Vanadium Ditelluride

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Title
Polymorphic Spin, Charge, and Lattice Waves in Vanadium Ditelluride
Author(s)
Dongyeun Won; Do Hoon Kiem; Hwanbeom Cho; Dohyun Kim; Younghak Kim; Min Yong Jeong; Changwon Seo; Jeongyong Kim; Je-Geun Park; Myung Joon Han; Heejun Yang; Suyeon Cho
Publication Date
2020-03
Journal
ADVANCED MATERIALS, v.32, no.11, pp.1906578 -
Publisher
WILEY-V C H VERLAG GMBH
Abstract
© 2020 WILEY-VCH Verlag GmbH & Co. KGaA, WeinheimLattice distortion, spin interaction, and dimensional crossover in transition metal dichalcogenides (TMDs) have led to intriguing quantum phases such as charge density waves (CDWs) and 2D magnetism. However, the combined effect of many factors in TMDs, such as spin–orbit, electron–phonon, and electron–electron interactions, stabilizes a single quantum phase at a given temperature and pressure, which restricts original device operations with various quantum phases. Here, nontrivial polymorphic quantum states, CDW phases, are reported in vanadium ditelluride (VTe2) at room temperature, which is unique among various CDW systems; the doping concentration determines the formation of either of the two CDW phases in VTe2 at ambient conditions. The two CDW polymorphs show different antiferromagnetic spin orderings in which the vanadium atoms create two different stripe-patterned spin waves. First-principles calculations demonstrate that the magnetic ordering is critically coupled with the corresponding CDW in VTe2, which suggests a rich phase diagram with polymorphic spin, charge, and lattice waves all coexisting in a solid for new conceptual quantum state-switching device applications
URI
https://pr.ibs.re.kr/handle/8788114/7219
ISSN
0935-9648
Appears in Collections:
Center for Correlated Electron Systems(강상관계 물질 연구단) > Journal Papers (저널논문)
Files in This Item:
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