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Hokkaido University Collection of Scholarly and Academic Papers >
Graduate School of Engineering / Faculty of Engineering >
Peer-reviewed Journal Articles, etc >

Nonequilibrium Carrier Dynamics Studied in Underdoped Bi2212 by Polarized Optical Pump-Probe Spectroscopy

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JSNM23-5_871-872.pdf202.34 kBPDFView/Open
Please use this identifier to cite or link to this item:http://hdl.handle.net/2115/49218

Title: Nonequilibrium Carrier Dynamics Studied in Underdoped Bi2212 by Polarized Optical Pump-Probe Spectroscopy
Authors: Toda, Y. Browse this author →KAKEN DB
Sekiya, J. Browse this author
Liu, Y. H. Browse this author
Momono, N. Browse this author
Oda, M. Browse this author
Ido, M. Browse this author →KAKEN DB
Keywords: High-Tc superconductor
Nonequilibrium quasiparticle dynamics
Ultrafast spectroscopy
Issue Date: Jul-2010
Publisher: Springer New York
Journal Title: Journal of Superconductivity and Novel Magnetism
Volume: 23
Issue: 5
Start Page: 871
End Page: 872
Publisher DOI: 10.1007/s10948-009-0608-0
Abstract: We investigate nonequilibrium quasiparticle dynamics measured by ultrafast optical spectroscopy on underdoped Bi2212 crystals, which provide direct evidence that superconducting (SC) and pseudogap (PG) quasiparticles coexist below Tc. We verify that the ratio of signals from SC and PG quasiparticles depends on both excitation energy and polarization of the probe beam due to the anisotropy of the probe transition matrix elements and the inter-band transition probability. Based on this property, we successfully separate the SC or PG component and precisely evaluate the temperature dependence of them across Tc.
Rights: The final publication is available at www.springerlink.com
Type: article (author version)
URI: http://hdl.handle.net/2115/49218
Appears in Collections:工学院・工学研究院 (Graduate School of Engineering / Faculty of Engineering) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 戸田 泰則

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