Ultrafast Metamorphosis of a Complex Charge-Density Wave

Publikationstyp: Zeitschriftenartikel
Publikationsstatus: Published
Autor/innen: Haupt, Kerstin; Eichberger, Maximilian; Erasmus, Nicolas; Rohwer, Andrea; Demsar, Jure; Rossnagel, Kai; Schwoerer, Heinrich
Erscheinungsjahr: 2016
Erschienen in: Physical Review Letters ; 116 (2016), 1. - 016402. - ISSN 0031-9007. - eISSN 1079-7114
Pubmed ID: 26799033
DOI (zitierfähiger Link): https://dx.doi.org/10.1103/PhysRevLett.116.016402
Zusammenfassung:
Modulated phases, commensurate or incommensurate with the host crystal lattice, are ubiquitous in solids. The transition between such phases involves formation and rearrangement of domain walls and is generally slow. Using ultrafast electron diffraction, we directly record the photoinduced transformation between a nearly commensurate and an incommensurate charge-density-wave phase in 1T-TaS2. The transformation takes place on the picosecond time scale, orders of magnitude faster than previously observed for commensurate-to-incommensurate transitions. The transition speed and mechanism can be linked to the peculiar nanoscale structure of the photoexcited nearly commensurate phase.
Fachgebiet (DDC): 530 Physik

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HAUPT, Kerstin, Maximilian EICHBERGER, Nicolas ERASMUS, Andrea ROHWER, Jure DEMSAR, Kai ROSSNAGEL, Heinrich SCHWOERER, 2016. Ultrafast Metamorphosis of a Complex Charge-Density Wave. In: Physical Review Letters. 116(1), 016402. ISSN 0031-9007. eISSN 1079-7114

@article{Haupt2016-01-06Ultra-39714, title={Ultrafast Metamorphosis of a Complex Charge-Density Wave}, year={2016}, doi={10.1103/PhysRevLett.116.016402}, number={1}, volume={116}, issn={0031-9007}, journal={Physical Review Letters}, author={Haupt, Kerstin and Eichberger, Maximilian and Erasmus, Nicolas and Rohwer, Andrea and Demsar, Jure and Rossnagel, Kai and Schwoerer, Heinrich}, note={Article Number: 016402} }

Erasmus, Nicolas Schwoerer, Heinrich Eichberger, Maximilian Modulated phases, commensurate or incommensurate with the host crystal lattice, are ubiquitous in solids. The transition between such phases involves formation and rearrangement of domain walls and is generally slow. Using ultrafast electron diffraction, we directly record the photoinduced transformation between a nearly commensurate and an incommensurate charge-density-wave phase in 1T-TaS<sub>2</sub>. The transformation takes place on the picosecond time scale, orders of magnitude faster than previously observed for commensurate-to-incommensurate transitions. The transition speed and mechanism can be linked to the peculiar nanoscale structure of the photoexcited nearly commensurate phase. Rohwer, Andrea Rohwer, Andrea Rossnagel, Kai Demsar, Jure Haupt, Kerstin Erasmus, Nicolas Eichberger, Maximilian 2017-08-01T09:52:14Z 2016-01-06 2017-08-01T09:52:14Z Ultrafast Metamorphosis of a Complex Charge-Density Wave Haupt, Kerstin eng Demsar, Jure Schwoerer, Heinrich Rossnagel, Kai

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