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Two- to three-dimensional crossover in the electronic structure of (Bi,Pb)2(Sr,La)2CuO6+delta from angle-resolved photoemission spectroscopy

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Title: Two- to three-dimensional crossover in the electronic structure of (Bi,Pb)2(Sr,La)2CuO6+delta from angle-resolved photoemission spectroscopy
Author(s): Tsunehiro, Takeuchi; Takeshi, Kondo; Takio, Kitao; Hiroyuki, Kaga; Hongbo, Yang; Hong, Ding; Adam, Kaminski; Juan Carlos, Campuzano
Subject(s): hole-concentration dependence single-crystals superconductor
Abstract: The hole-concentration (x) dependence of the three-dimensional energy-momentum dispersion in (Bi,Pb)(2)(Sr,La)(2)CuO6+delta has been investigated by angle-resolved photoemission spectroscopy. For a heavily overdoped sample of T-c<= 0.5 K, an energy dispersion of similar to 10 meV in width is observed in the vicinity of the (pi,0) point with varying momentum along the c axis (k(z)). This k(z) dispersion is zero for underdoped, optimally doped, and slightly overdoped samples up to a doping level corresponding to T-c=22 K. At higher doping levels we observe significant dispersion of the order of 10 meV (sample with T-c<= 0.5 K). This is clear evidence that at a doping value corresponding to T-c=22 K, a crossover from two- to three-dimensional electronic structure occurs.
Issue Date: 2005-11-25
Publisher: American Physical Society
Citation Info: Takeuchi, T., Kondo, T., Kitao, T., Kaga, H., Yang, H., Ding, H. et al. (2005). Two- to three-dimensional crossover in the electronic structure of (Bi,Pb)(2)(Sr,La)(2)CuO6+delta from angle-resolved photoemission spectroscopy. Physical Review Letters, 95. http://link.aps.org/abstract/PRL/v95/e227004
Type: Article
Description: Publisher's Copyright: http://forms.aps.org/author/copytrnsfr.pdf
URI: http://hdl.handle.net/10027/6209
ISSN: 0031-9007
Date Available in INDIGO: 2009-08-08
 

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