Spin−Spin Correlation Function and Magnetic Susceptibility of Quantum Ferrimagnetic Spin Chains as Models for Organic Molecule-Based Ferrimagnetics

2000 ◽  
Vol 104 (9) ◽  
pp. 1961-1965 ◽  
Author(s):  
Daisuke Shiomi ◽  
Kazunobu Sato ◽  
Takeji Takui
Keyword(s):  
Magnetic Susceptibility ◽  
Correlation Function ◽  
Organic Molecule ◽  
Spin Correlation ◽  
Spin Chains ◽  
Spin Correlation Function

A variational calculation of magnetized correlated fermion system using a spin-dependent correlation: Application to liquid 3He

2015 ◽  
Vol 29 (07) ◽  
pp. 1550046 ◽  
Author(s):  
Gholam Hossein Bordbar ◽  
Mohammad Taghi Mohammadi Sabet
Keyword(s):  
Magnetic Field ◽  
Magnetic Susceptibility ◽  
Correlation Function ◽  
Magnetic Fields ◽  
Spin Correlation ◽  
Variational Calculation ◽  
Fermion System ◽  
Magnetic Instability ◽  
Spin Correlation Function ◽  
Dependent Correlation

In the presence of magnetic field, we have employed a spin-dependent correlation function to investigate the properties of liquid 3 He using the variational method based on the cluster expansion of the energy. It has been indicated that at all relevant magnetic fields and densities, the inclusion of spin-dependency for the correlation function leads to the lower magnitudes for the kinetic, magnetic and potential energies, and therefore the total energy of this system. We have seen that the spin–spin correlation affects the system to be less magnetized compared to the case in which we consider the spin-independent correlation, especially at low densities. In the case of spin–spin correlation function, our results show a maximum in the magnetic susceptibility, and therefore a meta-magnetic instability for the system for the magnetic fields in the range 50 T ≤ B ≤ 60 T . This behavior has not been observed in the case of spin-independent correlation.

scholarly journals Site-resolved measurement of the spin-correlation function in the Fermi-Hubbard model

Science ◽  
2016 ◽  
Vol 353 (6305) ◽  
pp. 1253-1256 ◽  
Author(s):  
M. F. Parsons ◽  
A. Mazurenko ◽  
C. S. Chiu ◽  
G. Ji ◽  
D. Greif ◽  
...  
Keyword(s):  
Correlation Function ◽  
Hubbard Model ◽  
Spin Correlation ◽  
Spin Correlation Function

OFF THE CRITICAL POINT BY PERTURBATION (II): THE ISING MODEL SPIN-SPIN CORRELATOR IN A MAGNETIC FIELD

1990 ◽  
Vol 04 (05) ◽  
pp. 1039-1047 ◽  
Author(s):  
Vl. S. Dotsenko
Keyword(s):  
Magnetic Field ◽  
Correlation Function ◽  
Ising Model ◽  
Scaling Function ◽  
Spin Correlation ◽  
Regularization Technique ◽  
Spin Correlation Function ◽  
Analytic Regularization ◽  
Spin Correlator ◽  
The Scaling Function

An extension of the analytic regularization technique based on the conform 1 theory is suggested for the case of the spin-spin correlation function of the Ising model in a magnetic field, <σ0σR>h=F(t)/(R)1/4, t=hR15/8. Several first terms of the expansion of the scaling function F(t) are given.

Magnetic Transition and Spin Correlation in Mn Oxides at Low Temperatures

1998 ◽  
Vol 51 (1) ◽  
pp. 131
Author(s):  
Jie Jiang
Keyword(s):  
Correlation Function ◽  
Low Temperatures ◽  
Magnetic Transition ◽  
Spin Correlation ◽  
Spin Correlation Function ◽  
Mn Oxides

We study the magnetic transition and spin correlation in Mn oxides at low temperatures. The results indicate that there are antiferromagnetic (AF), spiral (SP), ferromagnetic (FM) and canted (CN) states when T → 0. With temperature increasing, a paramagnetic (PM) state appears. The spin–spin correlation function is also obtained.

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