TY - JOUR
T1 - Magnetic interaction in hole-doped high- Tc superconductors observed by angle-resolved photoemission spectroscopy
AU - Sato, T.
AU - Matsui, H.
AU - Terashima, K.
AU - Takahashi, T.
AU - Ding, H.
AU - Yang, H. B.
AU - Wang, S. C.
AU - Fujii, T.
AU - Watanabe, T.
AU - Matsuda, A.
AU - Terashima, T.
AU - Kadowaki, K.
N1 - Funding Information:
This work was supported by Grant-in-Aid for Scientific Research of MEXT, US NSF DMR-0072205, and Sloan Foundation. The Synchrotron Radiation Center is supported by US NSF DMR-0084402.
PY - 2004/10
Y1 - 2004/10
N2 - We have performed a high-resolution angle-resolved photoemission spectroscopy (ARPES) on high-Tc superconductors (HTSCs) Bi 2Sr2Can-1CunO2n+4 (n=1-3) to study the systematics of the electronic structure and the origin of many-body interactions responsible for superconductivity. We find that a large hole-like Fermi surface and d-wave superconducting gap are generic features of Bi-based HTSCs. For n=2 and 3, a sudden change in the energy dispersion, so-called "kink", becomes pronounced on approaching (π,0) in the superconducting state, while a kink appears only around the nodal direction in the normal state. The kink around (π,0) disappears at Tc. For n=1, the kink shows no significant temperature dependence even across Tc. This could suggest that the coupling of electrons with Q=(π,π) magnetic mode is dominant in the superconducting state for multi-layered cuprates, while the interaction at the normal state and that of single-layered cuprates have a different origin.
AB - We have performed a high-resolution angle-resolved photoemission spectroscopy (ARPES) on high-Tc superconductors (HTSCs) Bi 2Sr2Can-1CunO2n+4 (n=1-3) to study the systematics of the electronic structure and the origin of many-body interactions responsible for superconductivity. We find that a large hole-like Fermi surface and d-wave superconducting gap are generic features of Bi-based HTSCs. For n=2 and 3, a sudden change in the energy dispersion, so-called "kink", becomes pronounced on approaching (π,0) in the superconducting state, while a kink appears only around the nodal direction in the normal state. The kink around (π,0) disappears at Tc. For n=1, the kink shows no significant temperature dependence even across Tc. This could suggest that the coupling of electrons with Q=(π,π) magnetic mode is dominant in the superconducting state for multi-layered cuprates, while the interaction at the normal state and that of single-layered cuprates have a different origin.
KW - ARPES
KW - Bi-based cuprates
KW - Electronic structure
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U2 - 10.1016/j.physc.2003.11.063
DO - 10.1016/j.physc.2003.11.063
M3 - Article
AN - SCOPUS:4644295590
VL - 412-414
SP - 51
EP - 58
JO - Physica C: Superconductivity and its Applications
JF - Physica C: Superconductivity and its Applications
SN - 0921-4534
IS - SPEC. ISS.
ER -