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Dynamic separation of electron excitation and lattice heating during the photoinduced melting of the periodic lattice distortion in 2H-TaSe2
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10.1063/1.4818460
/content/aip/journal/apl/103/7/10.1063/1.4818460
http://aip.metastore.ingenta.com/content/aip/journal/apl/103/7/10.1063/1.4818460
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

Schematic of the MeV-UED set-up. The entire system is ∼4.5 m long.

Image of FIG. 2.
FIG. 2.

MeV UED diffraction data from 2H-TaSe in the CDW/PLD state. (a) Diffraction pattern obtained from a 200-shot accumulation at T = 80 K. The intensity has been rescaled to emphasize the SL peaks. (b) The intensity distribution along the yellow line in (a). (c) Diffraction pattern obtained after averaging 10 identical boxes in (a).

Image of FIG. 3.
FIG. 3.

(a) Temporal evolution of the SL peak. (b) Temporal evolution of the Bragg peak and diffuse scattering intensity. For clarity, the change of diffuse scattering intensity is multiplied by 3. The pump was a 795 nm optical pulse, at a fluence of 1.4 mJ/cm. The solid lines with given time constants are fits to the experimental data using an exponential function.

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/content/aip/journal/apl/103/7/10.1063/1.4818460
2013-08-16
2014-04-21
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Dynamic separation of electron excitation and lattice heating during the photoinduced melting of the periodic lattice distortion in 2H-TaSe2
http://aip.metastore.ingenta.com/content/aip/journal/apl/103/7/10.1063/1.4818460
10.1063/1.4818460
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