scholarly journals Magnon spin transport around the compensation magnetic field in easy-plane antiferromagnetic insulators

2021 ◽  
Vol 129 (22) ◽  
pp. 223906
Author(s):  
Ka Shen
Keyword(s):  
Magnetic Field ◽  
Spin Transport ◽  
Easy Plane

scholarly journals Spin transport and spin dynamics in antiferromagnets

2021 ◽  
Author(s):  
◽  
Geert Hoogeboom
Keyword(s):  
Magnetic Field ◽  
Heavy Metal ◽  
Spin Transport ◽  
Spin Dynamics ◽  
Magnetic Moments ◽  
Spin Current ◽  
Active Role ◽  
Metal Films ◽  
Alternating Direction ◽  
High Processing

Ferromagnets (FMs) have been a key ingredient in information technology because it is easy to manipulate and read out the magnetization. Antiferromagnets (AFMs) have magnetic moments with alternating direction resulting in negligible magnetization. This gives them high processing and device downscaling features, but this also makes it challenging to manipulate and interact with the AFM order. This thesis studies this interaction with antiferromagnets. NiO AFM order has been read out by electrically injecting spin current via the spin Hall effect in thin heavy metal films. In DyFeO3, both Dy and Fe magnetic moments, their excitation and interaction have been probed. A magnetic field lifts the degeneracy of magnetic excitations with opposite magnon spin, allowing a spin current to be detected nonlocally. The AFM order and the generation of spin current can easily be controlled by an adjacent FM. Thereby, we show that AFMs have the potential to play an active role in spintronics.

scholarly journals Quantum magnets with large single-ion easy-plane anisotropy in magnetic field

JETP Letters ◽  
2011 ◽  
Vol 94 (8) ◽  
pp. 665-670 ◽  
Author(s):  
A. V. Sizanov ◽  
A. V. Syromyatnikov
Keyword(s):  
Magnetic Field ◽  
Easy Plane ◽  
Quantum Magnets ◽  
Plane Anisotropy

The Behavior of the Ferromagnet/Wide-Band Polymer Heterostructure in Magnetic Field

2012 ◽  
Vol 190 ◽  
pp. 149-152 ◽  
Author(s):  
Natalya V. Vorob’eva ◽  
Aleksei N. Lachinov ◽  
V.M. Kornilov
Keyword(s):  
Magnetic Field ◽  
Experimental Data ◽  
Polymer Film ◽  
Spin Transport ◽  
Wide Band ◽  
Experimental Results ◽  
Spin Polarized ◽  
Conductive State

The experimental results for huge magnetoresistance in polymer/ferromagnet system have been considered. The evidences have been established for the relation of the partially spin-polarized current in the structure and the magnetoresistance events. The model of charge and spin transport of the high-conductive state of wide-band polymer film/ferromagnet heterostructure have been proposed on the base of the experimental data totality.

Antiferromagnetic Conic Refraction of Sound in Hematite

2010 ◽  
Vol 168-169 ◽  
pp. 173-176
Author(s):  
S.A. Migachev ◽  
M.F. Sadykov ◽  
M.M. Shakirzyanov ◽  
D.A. Ivanov
Keyword(s):  
Magnetic Field ◽  
Elastic Waves ◽  
Energy Flow ◽  
Deflection Angle ◽  
Easy Plane ◽  
Magnetoelastic Interaction ◽  
Basis Plane ◽  
Field Dependent ◽  
The Deflection Angle ◽  
The Magnetic Field

In a trigonal easy-plane -Fe2O3 antiferromagnet magnetic-field-dependent conic refraction due to the renormalization of the coefficients of elasticity effective magnetoelastic interaction is experimentally found in addition to the conventional internal conic refraction of the transverse elastic waves propagating along the trigonal C3 axis. It is shown that the deflection angle () of the energy flow from the C3 axis upon the internal conic refraction does not depend on the value of the magnetic field applied in the basis plane (HC3) and is a constant value determined by the correlation of the C14 and C44 coefficients of elasticity. The deflection angle of the energy flow upon the antiferromagnetic conic refraction () increases with increase in the field and tends to the  value at large H values. The obtained results agree well with the theory of this phenomenon in antiferromagnets and support its conclusions.

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