The Magnetic Field Dependent Characteristics of Conductance Fluctuations in Ballistic Quantum Dots

1995 ◽  
Vol 34 (Part 1, No. 8B) ◽  
pp. 4342-4344
Author(s):  
Jonathan P. Bird ◽  
Koji Ishibashi ◽  
Yuichi Ochiai ◽  
Yoshinobu Aoyagi ◽  
Takuo Sugano
Keyword(s):  
Magnetic Field ◽  
Quantum Dots ◽  
Conductance Fluctuations ◽  
Field Dependent ◽  
The Magnetic Field

scholarly journals Measurement of the magnetic field-dependent refractive index of magnetic fluids in bulk

2008 ◽  
Vol 6 (3) ◽  
pp. 195-197 ◽  
Author(s):  
刘婷 Ting Liu ◽  
陈险峰 Xianfeng Chen ◽  
狄子昀 Ziyun Di ◽  
张军锋 Junfeng Zhang ◽  
李新碗 Xinwan Li ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Refractive Index ◽  
Magnetic Fluids ◽  
Field Dependent ◽  
The Magnetic Field

Conduction electron diamagnetism in alloys and magnetic-field-dependent dielectric constant of a Fermi gas

1964 ◽  
Vol 280 (1380) ◽  
pp. 85-96 ◽  
Keyword(s):  
Magnetic Field ◽  
Dielectric Constant ◽  
Free Electrons ◽  
Impurity Potential ◽  
First Order ◽  
Dilute Alloys ◽  
A Value ◽  
Field Dependent ◽  
Self Consistency ◽  
The Magnetic Field

The diamagnetism of free electrons in the presence of charged impurity centres which are sufficiently dilute to be non-interacting is calculated to first order in the strength of the potential of the impurity centre. This is done by combining the density-matrix treatment of Landau diamagnetism with the impurity-screening theory o f March & Murray. The susceptibility involves the integrated value of the impurity potential through the crystal, and its first derivative with respect to the magnetic field, B. If the impurity potential is assumed to have a value appropriate to B — 0, then the result for the change in diamagnetic susceptibility on alloying agrees with that of Kohn & Luming (1963). It is shown, however, that the impurity potential is modified in the presence of the magnetic field, and in particular it has angular dependence. The correction to the dia­magnetic susceptibility due to this self-consistency is shown to be significant (25% ). The relevance of the theory to experimental results on dilute alloys is briefly discussed. Finally, as a by-product of the investigation, we have obtained interesting results about the form of the field-dependent dielectric constant.

Spectral characteristics of conductance fluctuations in ballistic quantum dots: The influence of finite magnetic field and temperature

1995 ◽  
Vol 52 (11) ◽  
pp. 8295-8304 ◽  
Author(s):  
J. P. Bird ◽  
K. Ishibashi ◽  
D. K. Ferry ◽  
Y. Ochiai ◽  
Y. Aoyagi ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Quantum Dots ◽  
Spectral Characteristics ◽  
Conductance Fluctuations

Investigating the magnetic field-dependent conductivity in magnetite thin films by modelling the magnetorefractive effect

2013 ◽  
Vol 26 (3) ◽  
pp. 036002 ◽  
Author(s):  
Chris S Kelley ◽  
James Naughton ◽  
Emma Benson ◽  
Ruth C Bradley ◽  
Vlado K Lazarov ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Thin Films ◽  
Field Dependent ◽  
The Magnetic Field ◽  
Magnetorefractive Effect

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.

scholarly journals Study of magnetic field dependent viscosity on a soret driven ferrothermohaline convection in a rotating porous medium

2014 ◽  
Vol 19 (1) ◽  
pp. 61-77
Author(s):  
R. Hemalatha
Keyword(s):  
Magnetic Field ◽  
Porous Medium ◽  
Taylor Number ◽  
Thermohaline Convection ◽  
Wide Range ◽  
Field Dependent ◽  
Magnetic Field Dependent Viscosity ◽  
Dependent Viscosity ◽  
The Magnetic Field ◽  
Oscillatory Instabilities

Abstract The effect of a magnetic field dependent viscosity on a Soret driven ferro thermohaline convection in a rotating porous medium has been investigated using the linear stability analysis. The normal mode technique is applied. A wide range of values of the Soret parameter, magnetization parameter, the magnetic field dependent viscosity, Taylor number and the permeability of porous medium have been considered. A Brinkman model is used. Both stationary and oscillatory instabilities have been obtained. It is found that the system stabilizes only through oscillatory mode of instability. It is found that the magnetization parameter and the permeability of the porous medium destabilize the system and the Soret parameter, the magnetic field dependent viscosity and the Taylor number tend to stabilize the system. The results are presented numerically and graphically

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