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Ultrafast electron ...
Ultrafast electron calorimetry uncovers a new long-lived metastable state in 1T-TaSe2 mediated by mode-selective electron-phonon coupling
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- Shi, Xun (författare)
- Univ Colorado, Dept Phys, Boulder, CO 80309 USA;Univ Colorado, JILA, Boulder, CO 80309 USA;NIST, Boulder, CO 80309 USA
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- You, Wenjing (författare)
- Univ Colorado, Dept Phys, Boulder, CO 80309 USA;Univ Colorado, JILA, Boulder, CO 80309 USA;NIST, Boulder, CO 80309 USA
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- Zhang, Yingchao (författare)
- Univ Colorado, Dept Phys, Boulder, CO 80309 USA;Univ Colorado, JILA, Boulder, CO 80309 USA;NIST, Boulder, CO 80309 USA
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- Tao, Zhensheng (författare)
- Univ Colorado, Dept Phys, Boulder, CO 80309 USA;Univ Colorado, JILA, Boulder, CO 80309 USA;NIST, Boulder, CO 80309 USA
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- Oppeneer, Peter M. (författare)
- Uppsala universitet,Materialteori
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- Wu, Xianxin (författare)
- Julius Maximilians Univ Wurzburg, Inst Theoret Phys & Astrophys, D-97074 Wurzburg, Germany
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- Thomale, Ronny (författare)
- Julius Maximilians Univ Wurzburg, Inst Theoret Phys & Astrophys, D-97074 Wurzburg, Germany
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- Rossnagel, Kai (författare)
- Univ Kiel, Inst Expt & Appl Phys, D-24098 Kiel, Germany;Deutsches Elektronen-Synchrotron DESY, D-22607 Hamburg, Germany;Ruprecht Haensel Laboratory, Kiel University and DESY, D-24098 Kiel and D-22607 Hamburg, Germany
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- Bauer, Michael (författare)
- Univ Kiel, Inst Expt & Appl Phys, D-24098 Kiel, Germany
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- Kapteyn, Henry (författare)
- Univ Colorado, Dept Phys, Boulder, CO 80309 USA;Univ Colorado, JILA, Boulder, CO 80309 USA;NIST, Boulder, CO 80309 USA
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- Murnane, Margaret (författare)
- Univ Colorado, Dept Phys, Boulder, CO 80309 USA;Univ Colorado, JILA, Boulder, CO 80309 USA;NIST, Boulder, CO 80309 USA
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(creator_code:org_t)
- American Association for the Advancement of Science (AAAS), 2019
- 2019
- Engelska.
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Ingår i: Science Advances. - : American Association for the Advancement of Science (AAAS). - 2375-2548. ; 5:3
- Relaterad länk:
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https://doi.org/10.1...
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https://uu.diva-port... (primary) (Raw object)
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https://advances.sci...
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
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- Quantum materials represent one of the most promising frontiers in the quest for faster, lightweight, energy-efficient technologies. However, their inherent complexity and rich phase landscape make them challenging to understand or manipulate. Here, we present a new ultrafast electron calorimetry technique that can systematically uncover new phases of quantum matter. Using time- and angle-resolved photoemission spectroscopy, we measure the dynamic electron temperature, band structure, and heat capacity. This approach allows us to uncover a new long-lived metastable state in the charge density wave material 1T-TaSe2, which is distinct from all the known equilibrium phases: It is characterized by a substantially reduced effective total heat capacity that is only 30% of the normal value, because of selective electron-phonon coupling to a subset of phonon modes. As a result, less energy is required to melt the charge order and transform the state of the material than under thermal equilibrium conditions.
Ämnesord
- NATURVETENSKAP -- Fysik -- Den kondenserade materiens fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Condensed Matter Physics (hsv//eng)
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Shi, Xun
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You, Wenjing
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Zhang, Yingchao
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Tao, Zhensheng
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Oppeneer, Peter ...
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Wu, Xianxin
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visa fler...
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Thomale, Ronny
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Rossnagel, Kai
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Bauer, Michael
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Kapteyn, Henry
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Murnane, Margare ...
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visa färre...
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