scholarly journals Relativistic corrections in magnetic systems

2001 ◽  
Vol 64 (9) ◽  
Author(s):  
A. Crépieux ◽  
P. Bruno
Keyword(s):  
Magnetic Systems ◽  
Relativistic Corrections

Hedgehog structure in nematic and magnetic systems

1988 ◽  
Vol 49 (7) ◽  
pp. 1097-1101 ◽  
Author(s):  
N. Schopohl ◽  
T.J. Sluckin
Keyword(s):  
Magnetic Systems

Dynamical chaos in magnetic systems

1992 ◽  
Vol 162 (7) ◽  
pp. 81 ◽  
Author(s):  
K.N. Alekseev ◽  
G.P. Berman ◽  
V.I. Tsifrinovich ◽  
A.M. Frishman
Keyword(s):  
Dynamical Chaos ◽  
Magnetic Systems

The localized electron: magnetic properties

2018 ◽  
Author(s):  
Jean-Pierre Launay ◽  
Michel Verdaguer
Keyword(s):  
Single Molecule ◽  
Model Systems ◽  
Ferromagnetic Coupling ◽  
Single Chain ◽  
Single Molecule Magnets ◽  
Magnetic Systems ◽  
Orbital Interactions ◽  
Prussian Blue Analogues ◽  
Mononuclear Complexes

After preliminaries about electron properties, and definitions in magnetism, one treats the magnetism of mononuclear complexes, in particular spin cross-over, showing the role of cooperativity and the sensitivity to external perturbations. Orbital interactions and exchange interaction are explained in binuclear model systems, using orbital overlap and orthogonality concepts to explain antiferromagnetic or ferromagnetic coupling. The phenomenologically useful Spin Hamiltonian is defined. The concepts are then applied to extended molecular magnetic systems, leading to molecular magnetic materials of various dimensionalities exhibiting bulk ferro- or ferrimagnetism. An illustration is provided by Prussian Blue analogues. Magnetic anisotropy is introduced. It is shown that in some cases, a slow relaxation of magnetization arises and gives rise to appealing single-ion magnets, single-molecule magnets or single-chain magnets, a route to store information at the molecular level.

Description and symmetry of aperiodic crystals

2018 ◽  
Author(s):  
Ted Janssen ◽  
Gervais Chapuis ◽  
Marc de Boissieu
Keyword(s):  
Time Reversal ◽  
Mathematical Concept ◽  
New Materials ◽  
Magnetic Systems ◽  
Atomic Structures ◽  
Modulated Phases ◽  
Quasiperiodic Functions ◽  
Aperiodic Crystals ◽  
Superspace Description

This chapter first introduces the mathematical concept of aperiodic and quasiperiodic functions, which will form the theoretical basis of the superspace description of the new recently discovered forms of matter. They are divided in three groups, namely modulated phases, composites, and quasicrystals. It is shown how the atomic structures and their symmetry can be characterized and described by the new concept. The classification of superspace groups is introduced along with some examples. For quasicrystals, the notion of approximants is also introduced for a better understanding of their structures. Finally, alternatives for the descriptions of the new materials are presented along with scaling symmetries. Magnetic systems and time-reversal symmetry are also introduced.

Relativistic corrections to binding energies of muonic molecules

1990 ◽  
Vol 42 (7) ◽  
pp. 3789-3794 ◽  
Author(s):  
Gerrard Aissing ◽  
Hendrik J. Monkhorst
Keyword(s):  
Binding Energies ◽  
Relativistic Corrections

Elastic behavior of magnetic systems with a narrow twofold-degenerate band

1987 ◽  
Vol 36 (7) ◽  
pp. 3868-3873 ◽  
Author(s):  
D. K. Ray ◽  
S. K. Ghatak
Keyword(s):  
Elastic Behavior ◽  
Magnetic Systems
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