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Nonequilibrium ``Melting'' of a Charge Density Wave Insulator via an Ultrafast Laser Pulse

Shen, Wen and Ge, Yizhi and Liu, AY and Krishnamurthy, HR and Devereaux, TP and Freericks, JK (2014) Nonequilibrium ``Melting'' of a Charge Density Wave Insulator via an Ultrafast Laser Pulse. In: PHYSICAL REVIEW LETTERS, 112 (17).

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Official URL: http://dx.doi.org/10.1103/PhysRevLett.112.176404

Abstract

We employ an exact solution of the simplest model for pump-probe time-resolved photoemission spectroscopy in charge-density-wave systems to show how, in nonequilibrium, the gap in the density of states disappears while the charge density remains modulated, and then the gap reforms after the pulse has passed. This nonequilibrium scenario qualitatively describes the common short-time experimental features in TaS2 and TbTe3, indicating a quasiuniversality for nonequilibrium ``melting'' with qualitative features that can be easily understood within a simple picture.

Item Type: Journal Article
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Additional Information: Copyright for this article belongs to the AMER PHYSICAL SOC, ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
Department/Centre: Division of Physical & Mathematical Sciences > Physics
Date Deposited: 27 Jun 2014 05:37
Last Modified: 27 Jun 2014 05:37
URI: http://eprints.iisc.ernet.in/id/eprint/49378

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