Phase diagram of one-dimensional electron-phonon systems. I. The Su-Schrieffer-Heeger model

1983 ◽  
Vol 27 (3) ◽  
pp. 1680-1697 ◽  
Author(s):  
Eduardo Fradkin ◽  
Jorge E. Hirsch
Keyword(s):  
Phase Diagram ◽  
Dimensional Electron ◽  
One Dimensional

scholarly journals Quasi-1D XY antiferromagnet Sr2Ni(SeO3)2Cl2 at Sakai-Takahashi phase diagram

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
E. S. Kozlyakova ◽  
A. V. Moskin ◽  
P. S. Berdonosov ◽  
V. V. Gapontsev ◽  
S. V. Streltsov ◽  
...  
Keyword(s):  
Phase Diagram ◽  
Long Range ◽  
Density Functional ◽  
Uniaxial Anisotropy ◽  
Exchange Interactions ◽  
Spin Liquid ◽  
Functional Theory ◽  
One Dimensional ◽  
Ordered Phases ◽  
Experimental Findings

AbstractUniform quasi-one-dimensional integer spin compounds are of interest as a potential realization of the Haldane conjecture of a gapped spin liquid. This phase, however, has to compete with magnetic anisotropy and long-range ordered phases, the implementation of which depends on the ratio of interchain J′ and intrachain J exchange interactions and both uniaxial D and rhombic E single-ion anisotropies. Strontium nickel selenite chloride, Sr2Ni(SeO3)2Cl2, is a spin-1 chain system which passes through a correlations regime at Tmax ~ 12 K to long-range order at TN = 6 K. Under external magnetic field it experiences the sequence of spin-flop at Bc1 = 9.0 T and spin-flip transitions Bc2 = 23.7 T prior to full saturation at Bsat = 31.0 T. Density functional theory provides values of the main exchange interactions and uniaxial anisotropy which corroborate the experimental findings. The values of J′/J = 0.083 and D/J = 0.357 place this compound into a hitherto unoccupied sector of the Sakai-Takahashi phase diagram.

scholarly journals Unscreened Coulomb repulsion in the one-dimensional electron gas

1999 ◽  
Vol 60 (23) ◽  
pp. 15654-15659 ◽  
Author(s):  
G. Fano ◽  
F. Ortolani ◽  
A. Parola ◽  
L. Ziosi
Keyword(s):  
Electron Gas ◽  
Coulomb Repulsion ◽  
Dimensional Electron ◽  
One Dimensional ◽  
Dimensional Electron Gas ◽  
The One

Magnetization of GaAs quantum wires with quasi one-dimensional electron systems

2004 ◽  
Vol 22 (1-3) ◽  
pp. 729-732 ◽  
Author(s):  
M.A Wilde ◽  
J.I Springborn ◽  
Ch Heyn ◽  
D Heitmann ◽  
D Grundler
Keyword(s):  
Quantum Wires ◽  
Electron Systems ◽  
Dimensional Electron ◽  
One Dimensional

Experimental determination of spectral densities in quasi-one-dimensional electron systems

1998 ◽  
Vol 249-251 ◽  
pp. 175-179
Author(s):  
B. Kardynal ◽  
C.H.W. Barnes ◽  
E.H. Linfield ◽  
D.A. Ritchie ◽  
J.T. Nicholls ◽  
...  
Keyword(s):  
Experimental Determination ◽  
Electron Systems ◽  
Dimensional Electron ◽  
Spectral Densities ◽  
One Dimensional
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