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ID 28891
file
creator
Chen, Yulin
Iyo, Akira
Yang, Wanli
Arita, Masashi
Johnston, Steve
Eisaki, Hiroshi
Devereaux, Thomas P
Hussain, Zahid
Shen, Z -X
NDC
Physics
abstract
Low energy ultrahigh momentum resolution angle resolved photoemission spectroscopy study on four-layer self-doped high T-c superconductor Ba2Ca3Cu4O8F2 (F0234) revealed fine structure in the band dispersion, identifying the unconventional association of hole and electron doping with the inner and outer CuO2 layers, respectively. For the states originating from two inequivalent CuO2 layers, different energy scales are observed in dispersion kinks associated with the collective mode coupling, with the larger energy scale found in the electron (n-) doped state which also has stronger coupling strength. Given the earlier finding that the superconducting gap is substantially larger along the n-type Fermi surface, our observations connect the mode coupling energy and strength with magnitude of the pairing gap.
journal title
Physical Review Letters
volume
Volume 103
issue
Issue 3
date of issued
2009-07-17
publisher
Amer Physical Soc
issn
0031-9007
ncid
publisher doi
language
eng
nii type
Journal Article
HU type
Journal Articles
DCMI type
text
format
application/pdf
text version
publisher
rights
Copyright (c) 2009 American Physical Society.
relation url
department
Graduate School of Science