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Ultrafast Triggerin...
Ultrafast Triggering of Insulator-Metal Transition in Two-Dimensional VSe2
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- Biswas, Deepnarayan (author)
- Aarhus Univ, Interdisciplinary Nanosci Ctr, Dept Phys & Astron, DK-8000 Aarhus C, Denmark.
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- Jones, Alfred J. H. (author)
- Aarhus Univ, Interdisciplinary Nanosci Ctr, Dept Phys & Astron, DK-8000 Aarhus C, Denmark.
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- Majchrzak, Paulina (author)
- Aarhus Univ, Interdisciplinary Nanosci Ctr, Dept Phys & Astron, DK-8000 Aarhus C, Denmark.;STFC Rutherford Appleton Lab, Cent Laser Facil, Harwell 0X11 0QX, Berks, England.
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- Choi, Byoung Ki (author)
- Univ Seoul, Dept Phys, Seoul 02504, South Korea.
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- Lee, Tsung-Han (author)
- Rutgers State Univ, Dept Phys & Astron, Piscataway, NJ 08856 USA.
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- Volckaert, Klara (author)
- Aarhus Univ, Interdisciplinary Nanosci Ctr, Dept Phys & Astron, DK-8000 Aarhus C, Denmark.
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- Feng, Jiagui (author)
- Univ St Andrews, SUPA, Sch Phys & Astron, St Andrews KY16 9SS, Fife, Scotland.;Chinese Acad Sci, Suzhou Inst Nanotech & Nanobion SINANO, Suzhou 215123, Peoples R China.
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- Markovic, Igor (author)
- Univ St Andrews, SUPA, Sch Phys & Astron, St Andrews KY16 9SS, Fife, Scotland.;Max Planck Inst Chem Phys Solids, D-01187 Dresden, Germany.
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- Andreatta, Federico (author)
- Aarhus Univ, Interdisciplinary Nanosci Ctr, Dept Phys & Astron, DK-8000 Aarhus C, Denmark.
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- Kang, Chang-Jong (author)
- Rutgers State Univ, Dept Phys & Astron, Piscataway, NJ 08856 USA.
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- Kim, Hyuk Jin (author)
- Univ Seoul, Dept Phys, Seoul 02504, South Korea.
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- Lee, In Hak (author)
- Univ Seoul, Dept Phys, Seoul 02504, South Korea.
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- Jozwiak, Chris (author)
- EO Lawrence Berkeley Natl Lab, Adv Light Source, Berkeley, CA 94720 USA.
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- Rotenberg, Eli (author)
- EO Lawrence Berkeley Natl Lab, Adv Light Source, Berkeley, CA 94720 USA.
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- Bostwick, Aaron (author)
- EO Lawrence Berkeley Natl Lab, Adv Light Source, Berkeley, CA 94720 USA.
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- Sanders, Charlotte E. (author)
- STFC Rutherford Appleton Lab, Cent Laser Facil, Harwell 0X11 0QX, Berks, England.
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- Zhang, Yu (author)
- STFC Rutherford Appleton Lab, Cent Laser Facil, Harwell 0X11 0QX, Berks, England.
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- Karras, Gabriel (author)
- STFC Rutherford Appleton Lab, Cent Laser Facil, Harwell 0X11 0QX, Berks, England.
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- Chapman, Richard T. (author)
- STFC Rutherford Appleton Lab, Cent Laser Facil, Harwell 0X11 0QX, Berks, England.
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- Wyatt, Adam S. (author)
- STFC Rutherford Appleton Lab, Cent Laser Facil, Harwell 0X11 0QX, Berks, England.
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- Springate, Emma (author)
- STFC Rutherford Appleton Lab, Cent Laser Facil, Harwell 0X11 0QX, Berks, England.
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- Miwa, Jill A. (author)
- Aarhus Univ, Interdisciplinary Nanosci Ctr, Dept Phys & Astron, DK-8000 Aarhus C, Denmark.
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- Hofmann, Philip (author)
- Aarhus Univ, Interdisciplinary Nanosci Ctr, Dept Phys & Astron, DK-8000 Aarhus C, Denmark.
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- King, Phil D. C. (author)
- Univ St Andrews, SUPA, Sch Phys & Astron, St Andrews KY16 9SS, Fife, Scotland.
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- Chang, Young Jun (author)
- Univ Seoul, Dept Phys, Seoul 02504, South Korea.;Univ Seoul, Dept Smart Cities, Seoul 02504, South Korea.
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- Lanatà, Nicola (author)
- Stockholms universitet,Nordiska institutet för teoretisk fysik (Nordita),Aarhus University, Denmark,Aarhus Univ, Interdisciplinary Nanosci Ctr, Dept Phys & Astron, DK-8000 Aarhus C, Denmark.;Stockholm Univ, S-10691 Stockholm, Sweden.;Nordita SU
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- Ulstrup, Soren (author)
- Aarhus Univ, Interdisciplinary Nanosci Ctr, Dept Phys & Astron, DK-8000 Aarhus C, Denmark.
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Aarhus Univ, Interdisciplinary Nanosci Ctr, Dept Phys & Astron, DK-8000 Aarhus C, Denmark Aarhus Univ, Interdisciplinary Nanosci Ctr, Dept Phys & Astron, DK-8000 Aarhus C, Denmark.;STFC Rutherford Appleton Lab, Cent Laser Facil, Harwell 0X11 0QX, Berks, England. (creator_code:org_t)
- 2021-02-18
- 2021
- English.
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In: Nano Letters. - : American Chemical Society (ACS). - 1530-6984 .- 1530-6992. ; 21:5, s. 1968-1975
- Related links:
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Abstract
Subject headings
Close
- The transition-metal dichalcogenide VSe2 exhibits an increased charge density wave transition temperature and an emerging insulating phase when thinned to a single layer. Here, we investigate the interplay of electronic and lattice degrees of freedom that underpin these phases in single-layer VSe2 using ultrafast pump-probe photoemission spectroscopy. In the insulating state, we observe a light-induced closure of the energy gap, which we disentangle from the ensuing hot carrier dynamics by fitting a model spectral function to the time-dependent photoemission intensity. This procedure leads to an estimated time scale of 480 fs for the closure of the gap, which suggests that the phase transition in single-layer VSe2 is driven by electron-lattice interactions rather than by Mott-like electronic effects. The ultrafast optical switching of these interactions in SL VSe2 demonstrates the potential for controlling phase transitions in 2D materials with light.
Subject headings
- NATURVETENSKAP -- Fysik -- Den kondenserade materiens fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Condensed Matter Physics (hsv//eng)
- NATURVETENSKAP -- Fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences (hsv//eng)
Keyword
- Single-layer VSe2
- metal-insulator transition
- charge density wave
- ultrafast dynamics
- time- and angle-resolved photoemission spectroscopy
Publication and Content Type
- ref (subject category)
- art (subject category)
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- By the author/editor
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Biswas, Deepnara ...
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Jones, Alfred J. ...
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Majchrzak, Pauli ...
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Choi, Byoung Ki
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Lee, Tsung-Han
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Volckaert, Klara
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show more...
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Feng, Jiagui
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Markovic, Igor
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Andreatta, Feder ...
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Kang, Chang-Jong
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Kim, Hyuk Jin
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Lee, In Hak
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Jozwiak, Chris
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Rotenberg, Eli
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Bostwick, Aaron
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Sanders, Charlot ...
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Zhang, Yu
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Karras, Gabriel
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Chapman, Richard ...
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Wyatt, Adam S.
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Springate, Emma
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Miwa, Jill A.
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Hofmann, Philip
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King, Phil D. C.
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Chang, Young Jun
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Lanatà, Nicola
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Ulstrup, Soren
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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 ...
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Physical Science ...
- Articles in the publication
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Nano Letters
- By the university
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Royal Institute of Technology
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Stockholm University