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Ubiquitous formatio...
Ubiquitous formation of bulk Dirac cones and topological surface states from a single orbital manifold in transition-metal dichalcogenides
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- Bahramy, M. S. (author)
- University of Tokyo,RIKEN, Center for Emergent Matter Science
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- Clark, O. J. (author)
- University of St Andrews
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- Yang, B. J. (author)
- Seoul National University,Institute for Basic Science, Korea
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- Feng, J. (author)
- Suzhou Institute of Nano-Tech and Nano-Bionics, CAS,University of St Andrews
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- Bawden, L. (author)
- University of St Andrews
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- Riley, J. M. (author)
- University of St Andrews,Diamond Light Source
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- Markovic, I. (author)
- University of St Andrews,Max Planck Institute for Chemical Physics of Solids
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- Mazzola, F. (author)
- University of St Andrews
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- Sunko, V. (author)
- University of St Andrews,Max Planck Institute for Chemical Physics of Solids
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- Biswas, D. (author)
- University of St Andrews
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- Cooil, S. P. (author)
- Norwegian University of Science and Technology
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- Jorge, M. (author)
- Norwegian University of Science and Technology
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- Wells, J. W. (author)
- Norwegian University of Science and Technology
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- Leandersson, M. (author)
- Lund University,Lunds universitet,MAX IV-laboratoriet,MAX IV Laboratory
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- Balasubramanian, T. (author)
- Lund University,Lunds universitet,MAX IV-laboratoriet,MAX IV Laboratory
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- Fujii, J. (author)
- CNR Istituto Officina dei Materiali (IOM)
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- Vobornik, I. (author)
- CNR Istituto Officina dei Materiali (IOM)
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- Rault, J. E. (author)
- Synchrotron SOLEIL
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- Kim, T. K. (author)
- Diamond Light Source
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- Hoesch, M. (author)
- Diamond Light Source
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- Okawa, K. (author)
- Tokyo Institute of Technology
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- Asakawa, M. (author)
- Tokyo Institute of Technology
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- Sasagawa, T. (author)
- Tokyo Institute of Technology
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- Eknapakul, T. (author)
- Suranaree University of Technology
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- Meevasana, W. (author)
- Thailand Center of Excellence in Physics,Suranaree University of Technology
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- King, P. D.C. (author)
- University of St Andrews
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(creator_code:org_t)
- 2018
- 2018
- English 7 s.
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In: Nature Materials. - 1476-1122. ; 17:1, s. 21-27
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http://dx.doi.org/10...
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Abstract
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- Transition-metal dichalcogenides (TMDs) are renowned for their rich and varied bulk properties, while their single-layer variants have become one of the most prominent examples of two-dimensional materials beyond graphene. Their disparate ground states largely depend on transition metal d-electron-derived electronic states, on which the vast majority of attention has been concentrated to date. Here, we focus on the chalcogen-derived states. From density-functional theory calculations together with spin- and angle-resolved photoemission, we find that these generically host a co-existence of type-I and type-II three-dimensional bulk Dirac fermions as well as ladders of topological surface states and surface resonances. We demonstrate how these naturally arise within a single p-orbital manifold as a general consequence of a trigonal crystal field, and as such can be expected across a large number of compounds. Already, we demonstrate their existence in six separate TMDs, opening routes to tune, and ultimately exploit, their topological physics.
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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Bahramy, M. S.
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Clark, O. J.
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Yang, B. J.
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Feng, J.
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Bawden, L.
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Riley, J. M.
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show more...
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Markovic, I.
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Mazzola, F.
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Sunko, V.
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Biswas, D.
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Cooil, S. P.
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Jorge, M.
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Wells, J. W.
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Leandersson, M.
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Balasubramanian, ...
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Fujii, J.
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Vobornik, I.
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Rault, J. E.
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Kim, T. K.
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Hoesch, M.
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Okawa, K.
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Asakawa, M.
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Sasagawa, T.
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Eknapakul, T.
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Meevasana, W.
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King, P. D.C.
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- 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