TWO-DIMENSIONAL ANISOTROPIC HEISENBERG FERROMAGNET IN COEXISTING TRANSVERSE AND LONGITUDINAL MAGNETIC FIELDS

2007 ◽  
Vol 21 (22) ◽  
pp. 3877-3887 ◽  
Author(s):  
AI-YUAN HU ◽  
YUAN CHEN
Keyword(s):  
Magnetic Field ◽  
Magnetic Properties ◽  
Green Function ◽  
Magnetic Fields ◽  
Transverse Magnetic Field ◽  
Transverse Magnetic ◽  
Heisenberg Ferromagnet ◽  
Two Dimensional ◽  
Temperature Anisotropy ◽  
The Green Function

The two-dimensional spin-1/2 anisotropic Heisenberg ferromagnet is investigated in coexisting transverse and longitudinal magnetic fields. Using the Green function treatment, the magnetization and susceptibility are studied as a function of temperature, anisotropy and magnetic fields. The effects of exchange anisotropy and transverse magnetic field on the magnetic properties of the system are discussed.

scholarly journals New Calibration Parameter for Observations of Transverse Solar Magnetic Fields in the Fe I 5324.19 Å Line

1993 ◽  
Vol 141 ◽  
pp. 196-198
Author(s):  
Weihong Song ◽  
Guoxiang Ai
Keyword(s):  
Magnetic Field ◽  
Numerical Analysis ◽  
Magnetic Fields ◽  
Computational Model ◽  
Transverse Magnetic Field ◽  
Transverse Magnetic ◽  
Square Root ◽  
Solar Magnetic Fields ◽  
Doppler Broadening ◽  
Theoretical And Numerical Analysis

AbstractAdopting the computational model of papers I and II (Song et al. 1990, 1992) we have found that for a better fit of the center of the Fe I 5324.19 Å line, the effect of turbulent Doppler broadening has to be taken into account. Through theoretical and numerical analysis we conclude that the square root of the modulus of Stokes Q and U is an appropiate observational parameter to represent the transverse magnetic field, since it is approximately linearly proportional to the strength of the transverse magnetic field for suitable positions of the filter passband.

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