Intergrain Ordering of a Superconductive Ceramic of YBa2Cu4O8at Zero External Magnetic Field Studied by Linear and Nonlinear Transport Coefficients

1999 ◽  
Vol 68 (3) ◽  
pp. 871-875 ◽  
Author(s):  
Takeshi Yamao ◽  
Makoto Hagiwara ◽  
Kuniyuki Koyama ◽  
Motohiro Matsuura
Keyword(s):  
Magnetic Field ◽  
External Magnetic Field ◽  
Transport Coefficients ◽  
Nonlinear Transport ◽  
Linear And Nonlinear

Pseudo-three-dimensional convective cell motion in a magnetized plasma

1984 ◽  
Vol 31 (2) ◽  
pp. 231-238 ◽  
Author(s):  
P. K. Shukla ◽  
M. Y. Yu
Keyword(s):  
Magnetic Field ◽  
External Magnetic Field ◽  
Mode Coupling ◽  
Three Dimensional ◽  
Convective Cell ◽  
Magnetized Plasma ◽  
Space Plasmas ◽  
Linear And Nonlinear ◽  
Convective Cells ◽  
Cell Motion

Linear and nonlinear mechanisms for generating convective cells with finite but small parallel (to the external magnetic field B0) wavelength are presented. The problems of mode-coupling as well as quasi-steady nonlinear mode structures are analytically studied. Possible applications in space plasmas are discussed.

scholarly journals FLUCTUATION THEOREMS WITHOUT TIME-REVERSAL SYMMETRY

2014 ◽  
Vol 28 (07) ◽  
pp. 1430003 ◽  
Author(s):  
CHENJIE WANG ◽  
D. E. FELDMAN
Keyword(s):  
Magnetic Field ◽  
Time Reversal ◽  
Topological States Of Matter ◽  
Transport Coefficients ◽  
Theoretical Research ◽  
Time Reversal Symmetry ◽  
Nonlinear Transport ◽  
Open Problems ◽  
Fluctuation Theorems ◽  
Fluctuation Relations

Fluctuation theorems establish deep relations between observables away from thermal equilibrium. Until recently, the research on fluctuation theorems was focused on time-reversal-invariant systems. In this review we address some newly discovered fluctuation relations that hold without the time-reversal symmetry, in particular, in the presence of an external magnetic field. One family of relations connects nonlinear transport coefficients in the opposite magnetic fields. Another family relates currents and noises at a fixed direction of the magnetic field in chiral systems, such as the edges of some quantum Hall liquids. We review the recent experimental and theoretical research, including the controversy about the microreversibility without the time-reversal symmetry, consider the applications of fluctuation theorems to the physics of topological states of matter, and discuss open problems.

scholarly journals Effects of an External Magnetic Field on the Interband and Intraband Optical Properties of an Asymmetric Biconvex Lens-Shaped Quantum Dot

Nanomaterials ◽  
2021 ◽  
Vol 12 (1) ◽  
pp. 60
Author(s):  
Mher A. Mkrtchyan ◽  
David B. Hayrapetyan ◽  
Eduard M. Kazaryan ◽  
Hayk A. Sarkisyan ◽  
Maxim Ya. Vinnichenko ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Optical Properties ◽  
External Magnetic Field ◽  
Quantum Dot ◽  
Harmonic Generation ◽  
Third Harmonic Generation ◽  
Photoluminescence Spectra ◽  
Third Harmonic ◽  
Different Temperatures ◽  
Linear And Nonlinear

The theoretical investigation of interband and intraband transitions in an asymmetric biconvex lens-shaped quantum dot are considered in the presence of an external magnetic field. The selection rules for intraband transitions are obtained. The behaviors of linear and nonlinear absorption and photoluminescence spectra are observed for different temperatures and magnetic field strengths. The second and third harmonic generation coefficients as a function of the photon energy are examined both in the absence and presence of an external magnetic field.

Model Fokker—Planck Equations: Part 3. Application to transport phenomena

1967 ◽  
Vol 1 (3) ◽  
pp. 327-339 ◽  
Author(s):  
J. P. Dougherty ◽  
S. R. Watson ◽  
M. A. Hellberg
Keyword(s):  
Magnetic Field ◽  
External Magnetic Field ◽  
Strong Magnetic Field ◽  
Transport Phenomena ◽  
Transport Coefficients ◽  
Planck Equation ◽  
Fokker Planck Equation ◽  
Complete Set ◽  
Fokker Planck Equations ◽  
Fokker Planck

The Chapman—Enskog expansion is applied to the model Fokker—Planck equation for a plasma, derived in part 2. It is shown that the complete set of transport coefficients can be calculated without further approximations. Results are derived first in the absence of any external magnetic field. The transport coefficients are also derived when there is a strong magnetic field, in which case they become anisotropic.

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