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|Title:||Two-component dynamics of the order parameter of high temperature Bi2Sr2CaCu2O8+δ superconductors revealed by time-resolved Raman scattering|
|Source:||Saichu, R.P., Mahns, I., Goos, A., Binder, S., May, P., Singer, S.G., Schulz, B., Rusydi, A., Unterhinninghofen, J., Manske, D., Guptasarma, P., Williamsen, M.S., Rübhausen, M. (2009-04-29). Two-component dynamics of the order parameter of high temperature Bi2Sr2CaCu2O8+δ superconductors revealed by time-resolved Raman scattering. Physical Review Letters 102 (17) : -. ScholarBank@NUS Repository. https://doi.org/10.1103/PhysRevLett.102.177004|
|Abstract:||We study the dynamics of the superconducting order parameter in the high-Tc cuprate Bi2Sr2CaCu2O8+δ by employing a novel time-resolved pump-probe Raman experiment. We find two different coupling mechanisms that contribute equally to the pair-breaking peak. One coupling sets in very fast at 2 ps and relaxes slowly, while the other one is delayed and sets in roughly at 5 ps and relaxes fast. A model that couples holes through phonons is able to reproduce one part of the condensate dynamics; thus, we argue that hole-spin interactions are of importance as well. © 2009 The American Physical Society.|
|Source Title:||Physical Review Letters|
|Appears in Collections:||Staff Publications|
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