Magnetization plateau and cusp in S=1 spin ladder

2004 ◽  
Vol 346-347 ◽  
pp. 34-37 ◽  
Author(s):  
T. Sakai ◽  
K. Okamoto ◽  
K. Okunishi ◽  
K. Kindo ◽  
Y. Narumi ◽  
...  
Keyword(s):  
Spin Ladder ◽  
Magnetization Plateau

scholarly journals Magnetization plateau in the S=1 spin ladder with competing interactions

2002 ◽  
Vol 63 (6-8) ◽  
pp. 1455-1458 ◽  
Author(s):  
Nobuhisa Okazaki ◽  
Kiyomi Okamoto ◽  
Tôru Sakai
Keyword(s):  
Spin Ladder ◽  
Competing Interactions ◽  
Magnetization Plateau

scholarly journals Magnetization Plateau in the Frustrated Spin Ladder

2000 ◽  
Vol 69 (1) ◽  
pp. 37-40 ◽  
Author(s):  
Nobuhisa Okazaki ◽  
Junji Miyoshi ◽  
Tôru Sakai
Keyword(s):  
Spin Ladder ◽  
Magnetization Plateau ◽  
Frustrated Spin

scholarly journals Magnetization plateau in the spin ladder with a four-spin exchange

1999 ◽  
Vol 60 (1) ◽  
pp. 48-51 ◽  
Author(s):  
Tôru Sakai ◽  
Yasumasa Hasegawa
Keyword(s):  
Spin Exchange ◽  
Spin Ladder ◽  
Magnetization Plateau

scholarly journals Magnetization Plateau ofS= 1 Spin Ladder BIP-TENO

2005 ◽  
Vol 159 ◽  
pp. 251-255 ◽  
Author(s):  
Munehisa Kikuchi ◽  
Kiyomi Okamoto ◽  
Kouichi Okunishi ◽  
Tôru Sakai
Keyword(s):  
Spin Ladder ◽  
Magnetization Plateau

DYNAMICAL STRUCTURE FACTORS OF THE S = 1/2 SPIN LADDER SYSTEMS WITH A DIAGONAL INTERACTION IN THE MAGNETIZATION-PLATEAU STATE

2002 ◽  
Vol 16 (20n22) ◽  
pp. 3325-3325
Author(s):  
N. HAGA ◽  
S. SUGA
Keyword(s):  
Inelastic Neutron Scattering ◽  
Quantum Spin ◽  
Present System ◽  
Spin Ladder ◽  
Dynamical Structure ◽  
Quantum Spin Systems ◽  
Xxz Model ◽  
Magnetization Plateau ◽  
Structure Factors ◽  
Plateau State

We investigate the dynamical structure factors of the S = 1/2 spin ladder systems with a diagonal interaction in the magnetization-plateau state. The results show characteristic behaviors depending on the chain interaction α, the ladder interaction 1 + δ and the diagonal interaction 1 - δ. The large weights are located at q = π, when δ is small. With increasing δ, the wavenumber of the large weights shifts towards q = π/2 taking the incommensurate value. The almost dispersionless behavior comes out at several combinations of α and δ, indicating that the elementary excitation is localized spatially. We discuss our results in comparison with the exact excitation spectrums of the S = 1/2 XXZ model which is an effective Hamiltonian of the present system in α ~ 0 and δ ~ 1. Dynamical structure factors of some S = 1/2 one-dimensional quantum spin systems in the magnetic fields were measured by inelastic neutron-scattering experiments1,2 and it has been shown the theoretical results from the numerical diagonalization of finite systems can explain them.3–5

scholarly journals Magnetization plateau in the frustrated spin ladder

2000 ◽  
Vol 281-282 ◽  
pp. 659-660 ◽  
Author(s):  
Nobuhisa Okazaki ◽  
Junji Miyoshi ◽  
Tôru Sakai
Keyword(s):  
Spin Ladder ◽  
Magnetization Plateau ◽  
Frustrated Spin

scholarly journals Magnetization Plateau of anS=1 Frustrated Spin Ladder

2001 ◽  
Vol 70 (3) ◽  
pp. 636-639 ◽  
Author(s):  
Kiyomi Okamoto ◽  
Nobuhisa Okazaki ◽  
Tôru Sakai
Keyword(s):  
Spin Ladder ◽  
Magnetization Plateau ◽  
Frustrated Spin
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