scholarly journals Quantum effects in the spin dynamics of the linear Heisenberg antiferromagnet

1979 ◽  
Vol 50 (B11) ◽  
pp. 7404 ◽  
Author(s):  
Gerhard Müller ◽  
Hans Beck ◽  
Jill C. Bonnerb
Keyword(s):  
Spin Dynamics ◽  
Quantum Effects ◽  
Heisenberg Antiferromagnet

scholarly journals Quantum effects inS= 1/2 two-dimensional Heisenberg antiferromagnet in applied magnetic field

2008 ◽  
Vol 64 (a1) ◽  
pp. C416-C416
Author(s):  
N. Tsyrulin ◽  
M. Kenzelmann ◽  
F. Xiao ◽  
P. Link ◽  
A. Schneidewind ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Applied Magnetic Field ◽  
Quantum Effects ◽  
Two Dimensional ◽  
Heisenberg Antiferromagnet

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.

Electron Spin Dynamics in a Spin 1/2 One-Dimensional Heisenberg Antiferromagnet [CuX2(AdH+)2]X2

2003 ◽  
Vol 135-136 ◽  
pp. 401-402 ◽  
Author(s):  
Shinya Takaishi ◽  
Yuji Furukawa ◽  
Ken-ichi Kumagai ◽  
Ryuichi Ikeda
Keyword(s):  
Electron Spin ◽  
Spin Dynamics ◽  
Heisenberg Antiferromagnet ◽  
One Dimensional ◽  
Electron Spin Dynamics

Spin Dynamics in an Alternating Linear-Chain Heisenberg Antiferromagnet

1978 ◽  
Vol 41 (21) ◽  
pp. 1520-1522 ◽  
Author(s):  
K. M. Diederix ◽  
J. P. Groen ◽  
T. O. Klaassen ◽  
N. J. Poulis
Keyword(s):  
Spin Dynamics ◽  
Linear Chain ◽  
Heisenberg Antiferromagnet

scholarly journals Quantum effects in complex systems: summarizing remarks

2020 ◽  
Vol 221 ◽  
pp. 582-588 ◽  
Author(s):  
Sharon Hammes-Schiffer
Keyword(s):  
Complex Systems ◽  
Condensed Phase ◽  
Spin Dynamics ◽  
Quantum Effects ◽  
Quantum Mechanical ◽  
Mechanical Phenomena

Quantum mechanical phenomena such as coherence, spin dynamics, and tunneling have been observed in biological, electrochemical, polymeric, and many other condensed phase processes. This paper summarizes the diverse contributions to the Faraday Discussion on quantum effects in complex systems.

Spin dynamics and spin correlations in the spinS=1 two-dimensional square-lattice Heisenberg antiferromagnet La2NiO4

1995 ◽  
Vol 96 (4) ◽  
pp. 479-489 ◽  
Author(s):  
K. Nakajima ◽  
K. Yamada ◽  
S. Hosoya ◽  
Y. Endoh ◽  
M. Greven ◽  
...  
Keyword(s):  
Spin Dynamics ◽  
Square Lattice ◽  
Two Dimensional ◽  
Heisenberg Antiferromagnet ◽  
Spin Correlations

Spin dynamics of the alternating linear heisenberg antiferromagnet Cu(NO3)2.2.5H2O

Physica B+C ◽  
1979 ◽  
Vol 96 (1) ◽  
pp. 41-53 ◽  
Author(s):  
K.M. Diederix ◽  
J.P. Groen ◽  
T.O. Klaassen ◽  
N.J. Poulis
Keyword(s):  
Spin Dynamics ◽  
Heisenberg Antiferromagnet
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