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Directional sub-fem...
Directional sub-femtosecond charge transfer dynamics and the dimensionality of 1T-TaS2
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- Kuehn, Danilo (författare)
- Univ Potsdam, Inst Phys & Astron, Karl Liebknecht Str 24-25, D-14476 Potsdam, Germany;Helmholtz Zentrum Berlin Mat & Energie GmbH, Albert Einstein Str 15, D-12489 Berlin, Germany
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- Mueller, Moritz (författare)
- Univ Basque Country, CSIC, Ctr Fis Mat, Paseo Manuel de Lardizabal 5, E-20018 Donostia San Sebastian, Spain;DIPC, Paseo Manuel de Lardizabal 5, E-20018 Donostia San Sebastian, Spain;CIC nanoGUNE, Ave Tolosa 76, E-20018 Donostia San Sebastian, Spain
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- Sorgenfrei, Florian (författare)
- Univ Potsdam, Inst Phys & Astron, Karl Liebknecht Str 24-25, D-14476 Potsdam, Germany;Helmholtz Zentrum Berlin Mat & Energie GmbH, Albert Einstein Str 15, D-12489 Berlin, Germany
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- Giangrisostomi, Erika (författare)
- Helmholtz Zentrum Berlin Mat & Energie GmbH, Albert Einstein Str 15, D-12489 Berlin, Germany
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- Jay, Raphael M. (författare)
- Univ Potsdam, Inst Phys & Astron, Karl Liebknecht Str 24-25, D-14476 Potsdam, Germany
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- Ovsyannikov, Ruslan (författare)
- Helmholtz Zentrum Berlin Mat & Energie GmbH, Albert Einstein Str 15, D-12489 Berlin, Germany
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- Mårtensson, Nils, 1949- (författare)
- Uppsala universitet,Molekyl- och kondenserade materiens fysik
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- Sanchez-Portal, Daniel (författare)
- Univ Basque Country, CSIC, Ctr Fis Mat, Paseo Manuel de Lardizabal 5, E-20018 Donostia San Sebastian, Spain;DIPC, Paseo Manuel de Lardizabal 5, E-20018 Donostia San Sebastian, Spain
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- Foehlisch, Alexander (författare)
- Univ Potsdam, Inst Phys & Astron, Karl Liebknecht Str 24-25, D-14476 Potsdam, Germany;Helmholtz Zentrum Berlin Mat & Energie GmbH, Albert Einstein Str 15, D-12489 Berlin, Germany
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(creator_code:org_t)
- 2019-01-24
- 2019
- Engelska.
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Ingår i: Scientific Reports. - : NATURE PUBLISHING GROUP. - 2045-2322. ; 9
- 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://www.nature.c...
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- For the layered transition metal dichalcogenide 1T-TaS2, we establish through a unique experimental approach and density functional theory, how ultrafast charge transfer in 1T-TaS2 takes on isotropic three-dimensional character or anisotropic two-dimensional character, depending on the commensurability of the charge density wave phases of 1T-TaS2. The X-ray spectroscopic core-hole-clock method prepares selectively in-and out-of-plane polarized sulfur 3p orbital occupation with respect to the 1T-TaS2 planes and monitors sub-femtosecond wave packet delocalization. Despite being a prototypical two-dimensional material, isotropic three-dimensional charge transfer is found in the commensurate charge density wave phase (CCDW), indicating strong coupling between layers. In contrast, anisotropic two-dimensional charge transfer occurs for the nearly commensurate phase (NCDW). In direct comparison, theory shows that interlayer interaction in the CCDW phase - not layer stacking variations - causes isotropic three-dimensional charge transfer. This is presumably a general mechanism for phase transitions and tailored properties of dichalcogenides with charge density waves.
Ämnesord
- NATURVETENSKAP -- Fysik -- Den kondenserade materiens fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Condensed Matter Physics (hsv//eng)
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