Ultrafast Metamorphosis of a Complex Charge-Density Wave

Physical Review Letters
K HauptH Schwoerer

Abstract

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(2). 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.

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Citations

May 17, 2017·Nano Letters·Alyssa J McKennaDavid J Flannigan
Oct 23, 2018·Science Advances·Alfred ZongNuh Gedik
May 16, 2017·Structural Dynamics·Daniel R CremonsDavid J Flannigan
Mar 15, 2019·Structural Dynamics·Nora BachSascha Schäfer
Jul 10, 2020·Nature·Jan Gerrit HorstmannClaus Ropers
Apr 2, 2019·Physical Review Letters·Sung-Hoon LeeDoohee Cho
Aug 4, 2020·Physical Review Letters·Renwen YuF Javier García de Abajo
Oct 24, 2018·Ultramicroscopy·Elisah J VandenBussche, David J Flannigan
Jul 9, 2021·The Journal of Physical Chemistry Letters·Spencer A ReisbickDavid J Flannigan
Jun 8, 2017·Chemical Reviews·Anatoly A IschenkoR J Dwayne Miller
Aug 14, 2020·Nano Letters·Chunhe DangLiming Xie
Sep 8, 2021·Nanotechnology·Md Afjal Khan PathanMihai E Vaida
Oct 2, 2021·Scientific Reports·Devendra NegiPeter A van Aken

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