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Giant valleyZeeman ...
Giant valleyZeeman coupling in the surface layer of an intercalated transition metal dichalcogenide
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- Edwards, B. (author)
- University of St Andrews
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- Dowinton, O. (author)
- University of Manchester
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- Hall, A. E. (author)
- University of Warwick
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- Murgatroyd, P. A.E. (author)
- University of St Andrews
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- Buchberger, S. (author)
- University of St Andrews,Max Planck Institute for Chemical Physics of Solids
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- Antonelli, T. (author)
- University of St Andrews
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- Siemann, G. R. (author)
- University of St Andrews
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- Rajan, A. (author)
- University of St Andrews
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- Morales, E. Abarca (author)
- University of St Andrews,Max Planck Institute for Chemical Physics of Solids
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- Zivanovic, A. (author)
- University of St Andrews,Max Planck Institute for Chemical Physics of Solids
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- Bigi, C. (author)
- University of St Andrews
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- Belosludov, R. V. (author)
- Tohoku University
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- Polley, C. M. (author)
- Lund University,Lunds universitet,MAX IV-laboratoriet,MAX IV Laboratory
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- Carbone, D. (author)
- Lund University,Lunds universitet,MAX IV-laboratoriet,MAX IV Laboratory
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- Mayoh, D. A. (author)
- University of Warwick
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- Balakrishnan, G. (author)
- University of Warwick
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- Bahramy, M. S. (author)
- University of Manchester
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- King, P. D.C. (author)
- University of St Andrews
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(creator_code:org_t)
- 2023-01-19
- 2023
- English.
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In: Nature Materials. - : Springer Science and Business Media LLC. - 1476-1122 .- 1476-4660. ; 22:4, s. 459-465
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http://dx.doi.org/10...
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https://lup.lub.lu.s...
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Abstract
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- Spin–valley locking is ubiquitous among transition metal dichalcogenides with local or global inversion asymmetry, in turn stabilizing properties such as Ising superconductivity, and opening routes towards ‘valleytronics’. The underlying valley–spin splitting is set by spin–orbit coupling but can be tuned via the application of external magnetic fields or through proximity coupling. However, only modest changes have been realized to date. Here, we investigate the electronic structure of the V-intercalated transition metal dichalcogenide V1/3NbS2 using microscopic-area spatially resolved and angle-resolved photoemission spectroscopy. Our measurements and corresponding density functional theory calculations reveal that the bulk magnetic order induces a giant valley-selective Ising coupling exceeding 50 meV in the surface NbS2 layer, equivalent to application of a ~250 T magnetic field. This energy scale is of comparable magnitude to the intrinsic spin–orbit splittings, and indicates how coupling of local magnetic moments to itinerant states of a transition metal dichalcogenide monolayer provides a powerful route to controlling their valley–spin splittings.
Subject headings
- NATURVETENSKAP -- Fysik -- Den kondenserade materiens fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Condensed Matter Physics (hsv//eng)
Publication and Content Type
- art (subject category)
- ref (subject category)
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- By the author/editor
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Edwards, B.
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Dowinton, O.
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Hall, A. E.
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Murgatroyd, P. A ...
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Buchberger, S.
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Antonelli, T.
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show more...
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Siemann, G. R.
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Rajan, A.
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Morales, E. Abar ...
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Zivanovic, A.
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Bigi, C.
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Belosludov, R. V ...
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Polley, C. M.
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Carbone, D.
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Mayoh, D. A.
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Balakrishnan, G.
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Bahramy, M. S.
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King, P. D.C.
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show less...
- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Physical Science ...
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and Condensed Matter ...
- Articles in the publication
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Nature Materials
- By the university
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Lund University