The quantum Hall's effect:A quantum electrodynamic phenomenon

被引:0
|
作者
A.I.Arbab [1 ]
机构
[1] Department of Physics,Faculty of Science,University of Khartoum
关键词
quantum Hall effect; Maxwell equations; electromagnetism;
D O I
暂无
中图分类号
O413 [量子论];
学科分类号
070201 ;
摘要
We have applied Maxwell’s equations to study the physics of quantum Hall’s effect.The electromagnetic properties of this system are obtained.The Hall’s voltage,V;= 2πh;n;/em,where n;is the electron number density,for a 2- dimensional system,and h = 2πh is the Planck’s constant,is found to coincide with the voltage drop across the quantum capacitor.Consideration of the cyclotronic motion of electrons is found to give rise to Hall’s resistance. Ohmic resistances in the horizontal and vertical directions have been found to exist before equilibrium state is reached. At a fundamental level,the Hall’s effect is found to be equivalent to a resonant LCR circuit with L;= 2πm/e;n;and C;= me;/2πh;n;satisfying the resonance condition with resonant frequency equal to the inverse of the scattering (relaxation) time,τ;.The Hall’s resistance is found to be R;=((L;)/C;);.The Hall’s resistance may be connected with the impedance that the electron wave experiences when it propagates in the 2-dimensional gas.
引用
收藏
页码:444 / 450
页数:7
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