TY - JOUR
T1 - Detailed study of the structure of the low-energy magnetic excitations in overdoped La1.75Sr0.25CuO4
AU - Ikeuchi, Kazuhiko
AU - Kikuchi, Tatsuya
AU - Nakajima, Kenji
AU - Kajimoto, Ryoichi
AU - Wakimoto, Shuichi
AU - Fujita, Masaki
N1 - Funding Information:
The neutron-scattering experiment at AMATERAS was carried out under a research project organized by JAEA (Proposal No. 2016P0601). This work was performed under the Inter-university Cooperative Research Program of the Institute for Materials Research, Tohoku University (Proposal No. 15K0108, 16K0036 and 17K0088). K. I. and M. F. and are supported by Grant-in-Aid for Young Scientists (B) (17K14348) and for Scientific Research (A) (16H02125), respectively.
Funding Information:
The neutron-scattering experiment at AMATERAS was carried out under a research project organized by JAEA (Proposal No. 2016P0601 ). This work was performed under the Inter-university Cooperative Research Program of the Institute for Materials Research, Tohoku University (Proposal No. 15K0108 , 16K0036 and 17K0088 ). K. I. and M. F. and are supported by Grant-in-Aid for Young Scientists (B) ( 17K14348 ) and for Scientific Research (A) ( 16H02125 ), respectively.
Publisher Copyright:
© 2018 Elsevier B.V.
Copyright:
Copyright 2018 Elsevier B.V., All rights reserved.
PY - 2018/5/1
Y1 - 2018/5/1
N2 - To examine the detailed structure of low-energy magnetic excitations in a high-transition-temperature superconducting cuprate with heavily hole-doping, we performed inelastic neutron scattering experiments on La1.75Sr0.25CuO4. We observed clear dispersion relations of the previously reported incommensurate (IC) magnetic correlations at Qtet=(0.5±δ,0.5)/(0.5,0.5±δ) [1]. In addition, we show the emergence of continuum magnetic excitations with a ring shape centered at Γ point Qtet=(0.5,0.5) in a constant energy spectrum at T=50K. The radius of the ring (r=0.109) is smaller than the incommensurability (δ=0.118). This suggests that the origin of the ring-like excitations is different from that of the IC magnetic correlations, and the low-energy magnetic excitations of the La2-xSrxCuO4 system are inherently composed of these two kinds of excitations.
AB - To examine the detailed structure of low-energy magnetic excitations in a high-transition-temperature superconducting cuprate with heavily hole-doping, we performed inelastic neutron scattering experiments on La1.75Sr0.25CuO4. We observed clear dispersion relations of the previously reported incommensurate (IC) magnetic correlations at Qtet=(0.5±δ,0.5)/(0.5,0.5±δ) [1]. In addition, we show the emergence of continuum magnetic excitations with a ring shape centered at Γ point Qtet=(0.5,0.5) in a constant energy spectrum at T=50K. The radius of the ring (r=0.109) is smaller than the incommensurability (δ=0.118). This suggests that the origin of the ring-like excitations is different from that of the IC magnetic correlations, and the low-energy magnetic excitations of the La2-xSrxCuO4 system are inherently composed of these two kinds of excitations.
KW - High-Tc superconducting cuprate
KW - Inelastic neutron scattering experiments
KW - Spin excitation
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U2 - 10.1016/j.physb.2017.11.022
DO - 10.1016/j.physb.2017.11.022
M3 - Article
AN - SCOPUS:85045244632
VL - 536
SP - 717
EP - 719
JO - Physica B: Condensed Matter
JF - Physica B: Condensed Matter
SN - 0921-4526
ER -