Anisotropic photoexcited carrier dynamics in (100)-, (001)-, and (110)-oriented YBCO films by polarized ultrafast optical spectroscopy

Chih-Wei Luo; M. H. Chen; C. C. Chiu; S. P. Chen; Kaung-Hsiung Wu; Jiunn-Yuan Lin; Jenh-Yih Juang; T. M. Uen; Y. S. Gou

doi:10.1023/A:1023410522965

Anisotropic photoexcited carrier dynamics in (100)-, (001)-, and (110)-oriented YBCO films by polarized ultrafast optical spectroscopy

Chih-Wei Luo^*, M. H. Chen, C. C. Chiu, S. P. Chen, Kaung-Hsiung Wu, Jiunn-Yuan Lin, Jenh-Yih Juang, T. M. Uen, Y. S. Gou

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

2 Scopus citations

Abstract

We report the time-resolved ultrafast optical spectroscopy results obtained from a series of well characterized (001)-, (100)- and (110)-oriented YBa₂Cu₃O₇-δ (YBCO) superconducting films prepared by pulsed laser deposition. The well-controlled film orientation has allowed us to probe the relaxation dynamics along various crystal orientations using respectively polarized pump and probe laser beams. The significant anisotropies in both the magnitude of the characteristic relaxation time and the temperature dependence of the photo-induced transient reflectance change indicate the nature of relaxation channel might be intrinsically different along different orientations. The implications of the results on the fundamental characteristics concerning superconducting gaps are discussed.

Original language	English
Pages (from-to)	767-774
Number of pages	8
Journal	Journal of Low Temperature Physics
Volume	131
Issue number	5-6
DOIs	https://doi.org/10.1023/A:1023410522965
State	Published - Jun 2003

Keywords

Pulse Laser Deposition
Crystal Orientation
Probe Laser
Relaxation Dynamic
YBCO Film

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title = "Anisotropic photoexcited carrier dynamics in (100)-, (001)-, and (110)-oriented YBCO films by polarized ultrafast optical spectroscopy",

abstract = "We report the time-resolved ultrafast optical spectroscopy results obtained from a series of well characterized (001)-, (100)- and (110)-oriented YBa2Cu3O7-δ (YBCO) superconducting films prepared by pulsed laser deposition. The well-controlled film orientation has allowed us to probe the relaxation dynamics along various crystal orientations using respectively polarized pump and probe laser beams. The significant anisotropies in both the magnitude of the characteristic relaxation time and the temperature dependence of the photo-induced transient reflectance change indicate the nature of relaxation channel might be intrinsically different along different orientations. The implications of the results on the fundamental characteristics concerning superconducting gaps are discussed.",

keywords = "Pulse Laser Deposition, Crystal Orientation, Probe Laser, Relaxation Dynamic, YBCO Film",

author = "Chih-Wei Luo and Chen, {M. H.} and Chiu, {C. C.} and Chen, {S. P.} and Kaung-Hsiung Wu and Jiunn-Yuan Lin and Jenh-Yih Juang and Uen, {T. M.} and Gou, {Y. S.}",

year = "2003",

month = jun,

doi = "10.1023/A:1023410522965",

language = "English",

volume = "131",

pages = "767--774",

journal = "Journal of Low Temperature Physics",

issn = "0022-2291",

publisher = "Springer New York",

number = "5-6",

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TY - JOUR

T1 - Anisotropic photoexcited carrier dynamics in (100)-, (001)-, and (110)-oriented YBCO films by polarized ultrafast optical spectroscopy

AU - Luo, Chih-Wei

AU - Chen, M. H.

AU - Chiu, C. C.

AU - Chen, S. P.

AU - Wu, Kaung-Hsiung

AU - Lin, Jiunn-Yuan

AU - Juang, Jenh-Yih

AU - Uen, T. M.

AU - Gou, Y. S.

PY - 2003/6

Y1 - 2003/6

N2 - We report the time-resolved ultrafast optical spectroscopy results obtained from a series of well characterized (001)-, (100)- and (110)-oriented YBa2Cu3O7-δ (YBCO) superconducting films prepared by pulsed laser deposition. The well-controlled film orientation has allowed us to probe the relaxation dynamics along various crystal orientations using respectively polarized pump and probe laser beams. The significant anisotropies in both the magnitude of the characteristic relaxation time and the temperature dependence of the photo-induced transient reflectance change indicate the nature of relaxation channel might be intrinsically different along different orientations. The implications of the results on the fundamental characteristics concerning superconducting gaps are discussed.

AB - We report the time-resolved ultrafast optical spectroscopy results obtained from a series of well characterized (001)-, (100)- and (110)-oriented YBa2Cu3O7-δ (YBCO) superconducting films prepared by pulsed laser deposition. The well-controlled film orientation has allowed us to probe the relaxation dynamics along various crystal orientations using respectively polarized pump and probe laser beams. The significant anisotropies in both the magnitude of the characteristic relaxation time and the temperature dependence of the photo-induced transient reflectance change indicate the nature of relaxation channel might be intrinsically different along different orientations. The implications of the results on the fundamental characteristics concerning superconducting gaps are discussed.

KW - Pulse Laser Deposition

KW - Crystal Orientation

KW - Probe Laser

KW - Relaxation Dynamic

KW - YBCO Film

UR - http://www.scopus.com/inward/record.url?scp=0038537571&partnerID=8YFLogxK

U2 - 10.1023/A:1023410522965

DO - 10.1023/A:1023410522965

M3 - Article

AN - SCOPUS:0038537571

SN - 0022-2291

VL - 131

SP - 767

EP - 774

JO - Journal of Low Temperature Physics

JF - Journal of Low Temperature Physics

IS - 5-6

ER -

Anisotropic photoexcited carrier dynamics in (100)-, (001)-, and (110)-oriented YBCO films by polarized ultrafast optical spectroscopy

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Keywords

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