| YU, Li, Dominik MUNZAR, A. V. BORIS, P. YORDANOV, Jiří CHALOUPKA, Th. WOLF, C. T. LIN, B. KEIMER a C. BERNHARD. Evidence for Two Separate Energy Gaps in Underdoped High-Temperature Cuprate Superconductors from Broadband Infrared Ellipsometry. Physical Review Letters. USA: The Americal Physical Society, 2008, roč. 100, č. 17, s. 177004-177007. ISSN 0031-9007. |
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@article{771445,
author = {Yu, Li and Munzar, Dominik and Boris, A. V. and Yordanov, P. and Chaloupka, Jiří and Wolf, Th. and Lin, C. T. and Keimer, B. and Bernhard, C.},
article_location = {USA},
article_number = {17},
keywords = {high-temperature superconductivity; cuprates; superconducting gap; pseudogap; c-axis conductivity; infrared ellipsometry},
language = {eng},
issn = {0031-9007},
journal = {Physical Review Letters},
title = {Evidence for Two Separate Energy Gaps in Underdoped High-Temperature Cuprate Superconductors from Broadband Infrared Ellipsometry},
volume = {100},
year = {2008}
}
TY - JOUR
ID - 771445
AU - Yu, Li - Munzar, Dominik - Boris, A. V. - Yordanov, P. - Chaloupka, Jiří - Wolf, Th. - Lin, C. T. - Keimer, B. - Bernhard, C.
PY - 2008
TI - Evidence for Two Separate Energy Gaps in Underdoped High-Temperature Cuprate Superconductors from Broadband Infrared Ellipsometry
JF - Physical Review Letters
VL - 100
IS - 17
SP - 177004
EP - 177004
PB - The Americal Physical Society
SN - 00319007
KW - high-temperature superconductivity
KW - cuprates
KW - superconducting gap
KW - pseudogap
KW - c-axis conductivity
KW - infrared ellipsometry
N2 - We present broadband infrared ellipsometry measurements of the c-axis conductivity of underdoped RBa2Cu3O7-delta (R=Y, Nd, and La) single crystals. Our data show that separate energy scales are underlying the redistributions of spectral weight due to the normal state pseudogap and the superconducting gap. Furthermore, they provide evidence that these gaps do not share the same electronic states and do not merge on the overdoped side. Accordingly, our data are suggestive of a two gap scenario with a pseudogap that is likely extrinsic with respect to superconductivity.
ER -
YU, Li, Dominik MUNZAR, A. V. BORIS, P. YORDANOV, Jiří CHALOUPKA, Th. WOLF, C. T. LIN, B. KEIMER a C. BERNHARD. Evidence for Two Separate Energy Gaps in Underdoped High-Temperature Cuprate Superconductors from Broadband Infrared Ellipsometry. \textit{Physical Review Letters}. USA: The Americal Physical Society, 2008, roč.~100, č.~17, s.~177004-177007. ISSN~0031-9007.
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