TY - JOUR
T1 - Zn-doping effects on low-energy spin excitations in La 1.85Sr0.15CuO4
AU - Kimura, H.
N1 - Funding Information:
The author deeply acknowledges K. Hirota, M. Kofu, and Y. Matsumoto for the tight collaboration, and also thanks Y. Endoh, M. Fujita, H. Hiraka, C.H. Lee, M. Matsuda, G. Shirane, J.M. Tranquada, H. Yamase, and K. Yamada, for stimulating discussions. This work was supported in part by a Grant-In-Aid for Encouragement of Young Scientists (13740198, 2001) from the Japanese Ministry of Education, Science, Sports and Culture, and by the Core Research for Evolutional Science and Technology (CREST) from the Japan Science and Technology Corporation.
PY - 2003/10
Y1 - 2003/10
N2 - A review is given on neutron scattering study of Zn-doping effects on low-energy spin excitations in optimally hole-doped La2-xSr xCuO4. As Zn-impurities increase, energy spectra of incommensurate spin excitations show a dramatic change from a well defined "spin gap" state to a gap-less excitation with static antiferromagnetic (AF) spin correlations. This modification of the gap structure can be understood as not simply reduction of the gap energy but a development of the Zn-induced in-gap excitation, which becomes more static with increasing Zn. An inhomogeneous mixed state of the in-gap spin excitation and the superconductivity is discussed with referring to the swiss cheese model.
AB - A review is given on neutron scattering study of Zn-doping effects on low-energy spin excitations in optimally hole-doped La2-xSr xCuO4. As Zn-impurities increase, energy spectra of incommensurate spin excitations show a dramatic change from a well defined "spin gap" state to a gap-less excitation with static antiferromagnetic (AF) spin correlations. This modification of the gap structure can be understood as not simply reduction of the gap energy but a development of the Zn-induced in-gap excitation, which becomes more static with increasing Zn. An inhomogeneous mixed state of the in-gap spin excitation and the superconductivity is discussed with referring to the swiss cheese model.
KW - La-based cuprates
KW - Neutron scattering
KW - Spin excitation
KW - Spin gap
KW - Zn-substitution
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U2 - 10.1016/S0921-4534(03)01071-2
DO - 10.1016/S0921-4534(03)01071-2
M3 - Conference article
AN - SCOPUS:0042785001
SN - 0921-4534
VL - 392-396
SP - 34
EP - 41
JO - Physica C: Superconductivity and its Applications
JF - Physica C: Superconductivity and its Applications
IS - PART 1
T2 - Proceedings of the 15th International Symposium on Superconduc
Y2 - 11 November 2002 through 13 November 2002
ER -