TY - JOUR
T1 - Spin Dynamics in an Ising-Like Quantum Spin Chain with Nonmagnetic Impurities
AU - Itoh, Shinichi
AU - Ikeda, Hironobu
AU - Sugimoto, Daisuke
AU - Iwasa, Kazuaki
AU - Eccleston, Roger S.
PY - 1995/3
Y1 - 1995/3
N2 - Neutron inelastic-scattering experiments on an Ising-like quantum antiferromagnetic chain with nonmagnetic impurities, CsCocMg1−cCl3 (c=1, 0.95, 0.9, 0.85, 0.6 and 0.4), were performed. The concentration dependence of the spin dynamics showed that although the solitons and the spin-wave continuum state were stable for a small amount of nonmagnetic impurities, they vanished at c=0.8. We also observed the coexistence of Ising-cluster excitations and intra-cluster excitations at low temperatures. These results can be well interpreted by a theory incorporated with next-nearest-neighbor interactions in the chain.
AB - Neutron inelastic-scattering experiments on an Ising-like quantum antiferromagnetic chain with nonmagnetic impurities, CsCocMg1−cCl3 (c=1, 0.95, 0.9, 0.85, 0.6 and 0.4), were performed. The concentration dependence of the spin dynamics showed that although the solitons and the spin-wave continuum state were stable for a small amount of nonmagnetic impurities, they vanished at c=0.8. We also observed the coexistence of Ising-cluster excitations and intra-cluster excitations at low temperatures. These results can be well interpreted by a theory incorporated with next-nearest-neighbor interactions in the chain.
KW - CsCoMgCl
KW - Ising-like antiferromagnetic chain
KW - exchange interaction
KW - inelastic neutron scattering
KW - nonmagnetic impurity
KW - spin dynamics
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U2 - 10.1143/JPSJ.64.927
DO - 10.1143/JPSJ.64.927
M3 - Article
AN - SCOPUS:77952775070
SN - 0031-9015
VL - 64
SP - 927
EP - 933
JO - Journal of the Physical Society of Japan
JF - Journal of the Physical Society of Japan
IS - 3
ER -