0000000000929402

AUTHOR

Heinrich Schwoerer

showing 2 related works from this author

Ultrafast Metamorphosis of a Complex Charge Density Wave in Tantalumdiselenite

2016

Using ultrafast electron diffraction, we record the transformation between a nearly-commensurate and an incommensurate charge-density-wave in 1T-TaS2, which takes place orders of magnitude faster than previously observed for commensurate-to-incommensurate transitions.

Condensed Matter::Quantum GasesDiffractionPhysicsOrders of magnitude (temperature)Ultrafast electron diffractionmedia_common.quotation_subjectPhysics::OpticsCondensed Matter::SuperconductivityElectric fieldCondensed Matter::Strongly Correlated ElectronsAtomic physicsTime-resolved spectroscopyMetamorphosisCharge density waveUltrashort pulsemedia_commonInternational Conference on Ultrafast Phenomena
researchProduct

Ultrafast Metamorphosis of a Complex Charge-Density Wave

2015

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.

Condensed Matter::Quantum GasesMaterials scienceCondensed matter physicsUltrafast electron diffractionGeneral Physics and Astronomy02 engineering and technologyCrystal structure021001 nanoscience & nanotechnology01 natural sciencesOrders of magnitude (time)Condensed Matter::SuperconductivityPicosecondPhase (matter)0103 physical sciencesCondensed Matter::Strongly Correlated Electrons010306 general physics0210 nano-technologyNanoscopic scaleUltrashort pulseCharge density wavePhysical Review Letters
researchProduct