启发
发表于 2025-3-26 23:15:28
Solitons in a , (,=1/2) Quantum Systemy discovered system (C.H.NH.)CuBr.. We have measured the excess specific heat △C, the nuclear spin-lattice relaxation (NSLR) time T. in the field range 0 < B < 7 k0e and the temperature range 1.5 K < T < 10 K, although some data are also obtained outside this region. These data will show that both t
opportune
发表于 2025-3-27 04:28:35
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diathermy
发表于 2025-3-27 08:26:22
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faculty
发表于 2025-3-27 11:06:20
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Console
发表于 2025-3-27 17:24:20
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flex336
发表于 2025-3-27 20:31:41
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错误
发表于 2025-3-27 23:51:10
The Life Time of the Spin Waves of a Classical Ferromagnetic Chain in an Applied Magnetic Fieldtion often requires the use of non-perturbative approaches , .The concept of non-linear excitations (solitons) was also sometimes invoked .However,when the ordering effect of`the magnetic field overcomes the thermally induced disorder, the spin -wave approach can be successfully used and th
寻找
发表于 2025-3-28 05:15:30
Quantum Spin Chains: Phase Behaviour and Dynamic Excitationseresting conjecture of HALDANE . According to Haldane, half-integer spin chains should behave like the exactly solvable spin-1/2 XXZ model, with a gapless phase for planar anisotropy terminating at an essential singularity at the Heisenberg point, and a phase with long-range order in the ground s
易改变
发表于 2025-3-28 08:48:07
Field Dependent Spin Dynamics of Antiferromagnetic Heisenberg Chainses. These techniques include soliton theories in the presence of weak magnetic fields , perturbative studies of a generalized Langevin equation for intermediate and large fields and computer simulations . Here we calculate, using a new mode-coupling theory, the response function measure
有罪
发表于 2025-3-28 11:47:41
Is CsNiF3 a Classical System?oximated (in the continuum limit and for D→∞) by the sine-Gordon (SG) model. However, much experimental data on CsNiF., a compound well described by (1), addressed to estimating the contribution of non-linear modes to the thermodynamic and scattering properties,have not received a consistent