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Volume 153, 2011
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Optical manipulation of coherent phonons in superconducting YBa2Cu3O7−δ thin films

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Abstract

The coherent phonons of YBa2Cu3O7−δ are believed to be strongly coupled to its superconductivity. Controlling the phonons below its transition temperature, therefore, may serve as a promising scheme of the control of superconductivity. Here we demonstrate optical manipulation of the Ba–O and Cu–O vibrations in a thin-film YBa2Cu3O7−δ below its transition temperature using a pair of femtosecond laser pulses. The interpulse delay is tuned to integral and half-integral multiples of the oscillation period of a specific phonon mode (Ba–O or Cu–O vibration) to enhance and suppress its amplitude, respectively.

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Article information


Submitted
18 Apr 2011
Accepted
24 May 2011
First published
19 Aug 2011

Faraday Discuss., 2011,153, 375-382
Article type
Paper

Optical manipulation of coherent phonons in superconducting YBa2Cu3O7−δ thin films

Y. Okano, H. Katsuki, Y. Nakagawa, H. Takahashi, K. G. Nakamura and K. Ohmori, Faraday Discuss., 2011, 153, 375
DOI: 10.1039/C1FD00070E

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