Search: onr:"swepub:oai:DiVA.org:kth-217430" >
Prolonged duration ...
Prolonged duration of nonequilibrated Dirac fermions in neutral topological insulators
-
Sumida, K. (author)
-
Ishida, Y. (author)
-
Zhu, S. (author)
-
show more...
-
Ye, M. (author)
-
- Pertsova, Anna (author)
- Stockholms universitet,KTH,Nordic Institute for Theoretical Physics NORDITA,Center for Quantum Materials (CQM), Sweden,Nordiska institutet för teoretisk fysik (Nordita)
-
- Triola, Christopher (author)
- Stockholms universitet,KTH,Nordic Institute for Theoretical Physics NORDITA,Center for Quantum Materials (CQM), Sweden,Nordiska institutet för teoretisk fysik (Nordita)
-
Kokh, K. A. (author)
-
Tereshchenko, O. E. (author)
-
- Balatsky, Alexander V. (author)
- Stockholms universitet,KTH,Nordic Institute for Theoretical Physics NORDITA,Center for Quantum Materials (CQM), Sweden; Los Alamos National Laboratory, USA; ETH Institute for Theoretical Studies, Switzerland; University of Connecticut, USA,Nordiska institutet för teoretisk fysik (Nordita)
-
Shin, S. (author)
-
Kimura, A. (author)
-
show less...
-
(creator_code:org_t)
- 2017-10-26
- 2017
- English.
-
In: Scientific Reports. - : NATURE PUBLISHING GROUP. - 2045-2322. ; 7
- Related links:
-
https://doi.org/10.1...
-
show more...
-
https://www.nature.c...
-
https://urn.kb.se/re...
-
https://doi.org/10.1...
-
https://urn.kb.se/re...
-
show less...
Abstract
Subject headings
Close
- Topological insulators (TIs) possess spin-polarized Dirac fermions on their surface but their unique properties are often masked by residual carriers in the bulk. Recently, (Sb1-xBix)(2)Te-3 was introduced as a non-metallic TI whose carrier type can be tuned from n to p across the charge neutrality point. By using time-and angle-resolved photoemission spectroscopy, we investigate the ultrafast carrier dynamics in the series of (Sb1-xBix)(2)Te-3. The Dirac electronic recovery of similar to 10 ps at most in the bulk-metallic regime elongated to >400 ps when the charge neutrality point was approached. The prolonged nonequilibration is attributed to the closeness of the Fermi level to the Dirac point and to the high insulation of the bulk. We also discuss the feasibility of observing excitonic instability of (Sb1-xBix)(2)Te-3.
Subject headings
- NATURVETENSKAP -- Fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences (hsv//eng)
Publication and Content Type
- ref (subject category)
- art (subject category)
Find in a library
To the university's database
- By the author/editor
-
Sumida, K.
-
Ishida, Y.
-
Zhu, S.
-
Ye, M.
-
Pertsova, Anna
-
Triola, Christop ...
-
show more...
-
Kokh, K. A.
-
Tereshchenko, O. ...
-
Balatsky, Alexan ...
-
Shin, S.
-
Kimura, A.
-
show less...
- About the subject
-
- NATURAL SCIENCES
-
NATURAL SCIENCES
-
and Physical Science ...
- Articles in the publication
-
Scientific Repor ...
- By the university
-
Royal Institute of Technology
-
Stockholm University