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Transient reversal of a Peierls-transition: Extreme phonon softening in laser-excited Bismuth

W. Lu, M. Nicoul, U. Shymanovich, A. Tarasevitch, M. Kammler, M. Horn von Hoegen, D. von der Linde, and K. Sokolowski-Tinten

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Abstract

Laser-excited coherent optical phonons in Bismuth were investigated using time-resolved X-ray diffraction. The observed extreme softening of the excited A1g-mode presents strong indication that the Peierls-distortion defining the equilibrium structure of Bismuth is transiently reversed.

© 2010 Optical Society of America

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