Softening of Cu-O Bond Stretching Phonons in TetragonalHgBa2CuO4+δ
نویسندگان
چکیده
منابع مشابه
Impulsive Softening of Coherent Phonons in Tellurium.
We investigate the dynamics of coherent optical phonons in tellurium after high-density excitation with femtosecond laser pulses. The data show a continuous redshift of the phonon frequency with increasing excitation density. Experiments with double-pulse excitation prove that the observed frequency shift is of purely electronic origin. We demonstrate that coherent phonons allow monitoring the ...
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ژورنال
عنوان ژورنال: Physical Review Letters
سال: 2004
ISSN: 0031-9007,1079-7114
DOI: 10.1103/physrevlett.92.197005