TY - JOUR
T1 - Electronic structure of impurity-substituted Bi2Sr 2CaCu2O8+δ studied by angle-resolved photoemission spectroscopy
AU - Terashima, K.
AU - Hashimoto, D.
AU - Matsui, H.
AU - Sato, T.
AU - Takahashi, T.
AU - Yamamoto, T.
AU - Kadowaki, K.
N1 - Funding Information:
This work is supported by a grant from the MEXT of Japan. HM thanks a financial support from JSPS.
PY - 2006/1
Y1 - 2006/1
N2 - We have performed high-resolution angle-resolved photoemission spectroscopy (ARPES) on Co-, Ni-, and Zn-substituted Bi2Sr2CaCu 2O8+δ (Bi2212) to study the impurity effect on the electronic structure. The shape of Fermi surface and the symmetry of superconducting gap are unchanged by impurities, while the superconducting coherent peak around (π, 0) is remarkably suppressed. The temperature dependence of the coherent-peak intensity shows a good correspondence to the reported superfluid density. The intensity of coherent peak scales well with the Tc in pristine, Co-, and Ni-Bi2212, but not in Zn-Bi2212, suggesting that non-magnetic Zn atoms destroy the superconductivity more strongly than the magnetic impurities.
AB - We have performed high-resolution angle-resolved photoemission spectroscopy (ARPES) on Co-, Ni-, and Zn-substituted Bi2Sr2CaCu 2O8+δ (Bi2212) to study the impurity effect on the electronic structure. The shape of Fermi surface and the symmetry of superconducting gap are unchanged by impurities, while the superconducting coherent peak around (π, 0) is remarkably suppressed. The temperature dependence of the coherent-peak intensity shows a good correspondence to the reported superfluid density. The intensity of coherent peak scales well with the Tc in pristine, Co-, and Ni-Bi2212, but not in Zn-Bi2212, suggesting that non-magnetic Zn atoms destroy the superconductivity more strongly than the magnetic impurities.
KW - D. Superconductivity
UR - http://www.scopus.com/inward/record.url?scp=33645021623&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=33645021623&partnerID=8YFLogxK
U2 - 10.1016/j.jpcs.2005.10.054
DO - 10.1016/j.jpcs.2005.10.054
M3 - Article
AN - SCOPUS:33645021623
VL - 67
SP - 271
EP - 273
JO - Journal of Physics and Chemistry of Solids
JF - Journal of Physics and Chemistry of Solids
SN - 0022-3697
IS - 1-3
ER -