scholarly journals Impact of criticality and phase separation on the spin dynamics of the one-dimensional t–J model

1996 ◽  
Vol 79 (8) ◽  
pp. 5227 ◽  
Author(s):  
Shu Zhang ◽  
Gerhard Müller ◽  
Joachim Stolze
Keyword(s):  
Phase Separation ◽  
Spin Dynamics ◽  
One Dimensional ◽  
The One

Spin Dynamics in the One-Dimensional Antiferromagnet(CD3)4NMnCl3

1972 ◽  
Vol 5 (5) ◽  
pp. 1999-2014 ◽  
Author(s):  
M. T. Hutchings ◽  
G. Shirane ◽  
R. J. Birgeneau ◽  
S. L. Holt
Keyword(s):  
Spin Dynamics ◽  
One Dimensional ◽  
The One

A neutron scattering study of spin dynamics in the one-dimensional paramagnet CsMnBr3

1984 ◽  
Vol 62 (11) ◽  
pp. 1132-1138 ◽  
Author(s):  
B. D. Gaulin ◽  
M. F. Collins
Keyword(s):  
Neutron Scattering ◽  
Spin Wave ◽  
Spin Dynamics ◽  
Quantitative Agreement ◽  
Generalized Langevin Equation ◽  
Heisenberg Antiferromagnet ◽  
One Dimensional ◽  
Truncation Scheme ◽  
Zone Centre ◽  
The One

CsMnBr3 is a quasi-one-dimensional Heisenberg antiferromagnet. We present results of the magnetic inelastic response of CsMnBr3 across the magnetic Brillouin zone by neutron scattering techniques. Well-defined spin-wave modes, characteristic of one-dimensional magnetic insulators, are found over most of the zone in the paramagnetic phase at 15 K. The zone centre response is not sharp, but peaks in the scattering function S(k, ω) are found. No excitation branch going to zero energy at zero wavevector is found. At small wavevectors there is a mode with energy 1.7 ± 0.2 meV and we use it to identify planar anisotropy in this system. The mid-zone response as a function of temperature is analyzed in terms of a generalized Langevin equation approach (Mori formulation) to the dynamics of the one-dimensional Heisenberg antiferromagnet. The theory contains no adjustable parameters. Our results are compared with two truncation schemes of the theory. We report qualitative agreement with the theories, including the observation of upwards renormalization of spin-wave energy with temperature. Quantitative agreement is less than good for either truncation scheme.

scholarly journals Phase separation and pairing regimes in the one-dimensional asymmetric Hubbard model

2010 ◽  
Vol 81 (22) ◽  
Author(s):  
L. Barbiero ◽  
M. Casadei ◽  
M. Dalmonte ◽  
C. Degli Esposti Boschi ◽  
E. Ercolessi ◽  
...  
Keyword(s):  
Phase Separation ◽  
Hubbard Model ◽  
One Dimensional ◽  
The One ◽  
Asymmetric Hubbard Model

Simulation of Copolymer Phase Separation in One-Dimensional Thin Liquid Films

2012 ◽  
Vol 2 (1) ◽  
pp. 33-46
Author(s):  
Hidenori Yasuda
Keyword(s):  
Phase Separation ◽  
Shallow Water Equations ◽  
Microphase Separation ◽  
Liquid Films ◽  
Thin Liquid Films ◽  
Two Phase ◽  
One Dimensional ◽  
Positive Volume ◽  
Spurious Oscillations ◽  
The One

AbstractThis paper discusses the development of an invariant finite difference scheme to simulate the microphase separation of copolymers in one-dimensional thin liquid films. The film phenomena are modelled using two-phase shallow water equations and the Ohta-Kawasaki potential, which governs the phase separation of the copolymer. Non-positive volume fractions and spurious oscillations are eventually eliminated, in simulating the one-dimensional phase separation lamellar pattern.

scholarly journals Charge and spin dynamics in the one-dimensional t-Jzand t-J models

1997 ◽  
Vol 55 (10) ◽  
pp. 6491-6503 ◽  
Author(s):  
Shu Zhang ◽  
Michael Karbach ◽  
Gerhard Müller ◽  
Joachim Stolze
Keyword(s):  
Spin Dynamics ◽  
One Dimensional ◽  
The One

scholarly journals Quantum spin dynamics of the one-dimensional planar antiferromagnet

1981 ◽  
Vol 14 (23) ◽  
pp. 3399-3422 ◽  
Author(s):  
G Muller ◽  
H Thomas ◽  
M W Puga ◽  
H Beck
Keyword(s):  
Spin Dynamics ◽  
Quantum Spin ◽  
One Dimensional ◽  
The One

scholarly journals Phase separation in the binary-alloy problem: The one-dimensional spinless Falicov-Kimball model

1996 ◽  
Vol 53 (24) ◽  
pp. 16189-16196 ◽  
Author(s):  
J. K. Freericks ◽  
Ch. Gruber ◽  
N. Macris
Keyword(s):  
Phase Separation ◽  
Binary Alloy ◽  
One Dimensional ◽  
The One

Phase separation in the one-dimensional t-V model

1997 ◽  
Vol 282-287 ◽  
pp. 1871-1872 ◽  
Author(s):  
Y.C. Chen ◽  
H.Q. Lin
Keyword(s):  
Phase Separation ◽  
One Dimensional ◽  
The One
Sign in / Sign up

Export Citation Format

Share Document