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Ultrafast electron ...
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Shi, XunUniv Colorado, Dept Phys, Boulder, CO 80309 USA;Univ Colorado, JILA, Boulder, CO 80309 USA;NIST, Boulder, CO 80309 USA
(författare)
Ultrafast electron calorimetry uncovers a new long-lived metastable state in 1T-TaSe2 mediated by mode-selective electron-phonon coupling
- Artikel/kapitelEngelska2019
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American Association for the Advancement of Science (AAAS),2019
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LIBRIS-ID:oai:DiVA.org:uu-381840
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https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-381840URI
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https://doi.org/10.1126/sciadv.aav4449DOI
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Språk:engelska
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Sammanfattning på:engelska
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Ämneskategori:art swepub-publicationtype
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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.
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You, WenjingUniv Colorado, Dept Phys, Boulder, CO 80309 USA;Univ Colorado, JILA, Boulder, CO 80309 USA;NIST, Boulder, CO 80309 USA
(författare)
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Zhang, YingchaoUniv Colorado, Dept Phys, Boulder, CO 80309 USA;Univ Colorado, JILA, Boulder, CO 80309 USA;NIST, Boulder, CO 80309 USA
(författare)
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Tao, ZhenshengUniv Colorado, Dept Phys, Boulder, CO 80309 USA;Univ Colorado, JILA, Boulder, CO 80309 USA;NIST, Boulder, CO 80309 USA
(författare)
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Oppeneer, Peter M.Uppsala universitet,Materialteori(Swepub:uu)peopp623
(författare)
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Wu, XianxinJulius Maximilians Univ Wurzburg, Inst Theoret Phys & Astrophys, D-97074 Wurzburg, Germany
(författare)
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Thomale, RonnyJulius Maximilians Univ Wurzburg, Inst Theoret Phys & Astrophys, D-97074 Wurzburg, Germany
(författare)
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Rossnagel, KaiUniv 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
(författare)
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Bauer, MichaelUniv Kiel, Inst Expt & Appl Phys, D-24098 Kiel, Germany
(författare)
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Kapteyn, HenryUniv Colorado, Dept Phys, Boulder, CO 80309 USA;Univ Colorado, JILA, Boulder, CO 80309 USA;NIST, Boulder, CO 80309 USA
(författare)
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Murnane, MargaretUniv Colorado, Dept Phys, Boulder, CO 80309 USA;Univ Colorado, JILA, Boulder, CO 80309 USA;NIST, Boulder, CO 80309 USA
(författare)
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Univ Colorado, Dept Phys, Boulder, CO 80309 USA;Univ Colorado, JILA, Boulder, CO 80309 USA;NIST, Boulder, CO 80309 USAMaterialteori
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Sammanhörande titlar
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Ingår i:Science Advances: American Association for the Advancement of Science (AAAS)5:32375-2548
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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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