scholarly journals Statics and dynamics of weakly coupled antiferromagnetic spin-12ladders in a magnetic field

2011 ◽  
Vol 83 (5) ◽  
Author(s):  
Pierre Bouillot ◽  
Corinna Kollath ◽  
Andreas M. Läuchli ◽  
Mikhail Zvonarev ◽  
Benedikt Thielemann ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Weakly Coupled ◽  
Statics And Dynamics ◽  
Antiferromagnetic Spin

Current bistability in a weakly coupled multi-quantum well structure: a magnetic field induced ‘memory effect’

2009 ◽  
Vol 42 (14) ◽  
pp. 145109 ◽  
Author(s):  
W H M Feu ◽  
J M Villas-Bôas ◽  
L A Cury ◽  
P S S Guimarães ◽  
G S Vieira ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Quantum Well ◽  
Memory Effect ◽  
Quantum Well Structure ◽  
Weakly Coupled ◽  
Multi Quantum Well

scholarly journals Nonlinear soliton confinement in weakly coupled antiferromagnetic spin chains

2020 ◽  
Vol 102 (2) ◽  
Author(s):  
H. Lane ◽  
C. Stock ◽  
S.-W. Cheong ◽  
F. Demmel ◽  
R. A. Ewings ◽  
...  
Keyword(s):  
Spin Chains ◽  
Weakly Coupled ◽  
Antiferromagnetic Spin

scholarly journals Magnetic field induced orientational transitions in liquid crystals doped with carbon nanotubes

2017 ◽  
Vol 8 ◽  
pp. 2807-2817 ◽  
Author(s):  
Danil A Petrov ◽  
Pavel K Skokov ◽  
Alexander N Zakhlevnykh
Keyword(s):  
Magnetic Field ◽  
Carbon Nanotubes ◽  
Liquid Crystal ◽  
Continuum Theory ◽  
Weakly Coupled ◽  
Transitions In Liquid Crystals ◽  
The Matrix ◽  
Liquid Crystal Matrix ◽  
Planar Phase ◽  
Orientational Transitions

We propose a continuum theory of orientational phase transitions induced by an external magnetic field in a suspension of carbon nanotubes in a nematic liquid crystal. It is shown that in a magnetic field a non-uniform and two different uniform phases are possible in the suspension. The uniform phases of the suspension differ by the type of orientational coupling of nanotubes with the liquid crystal matrix (the planar type when the nanotubes are oriented along the matrix director, and the homeotropic type when the nanotubes are perpendicular to the director). The possibility of a redistribution of the nanotube concentration (segregation effect) is shown. The fields of orientational transitions between uniform and non-uniform phases of the suspension are found analytically. It is shown that, when the nanotubes are weakly coupled to the matrix, the magnetic field induces reentrant transitions (uniform planar phase–non-uniform phase–uniform homeotropic phase–non-uniform phase). These transitions can be of first or of second order depending on the carbon nanotubes segregation intensity.

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