Atef Fadl Amin Ebrahim  <br/><br/>
Quantum electron spin dynamics in coupled double quantum dots /  
 ديناميكية الحركة المغزلية للالكترون الكمى خلال زوج من النقط المكماة المتبادلة التأثير 
Atef Fadl Amin Ebrahim ; Supervised Mohamed Abdallah Semary , Bernhard Kramer , Adel Helmy Phillips 
 - Cairo :   Atef Fadl Amin Ebrahim ,   2009 
 - 97Leaves :   charts ;   30cm 
<br/><br/>Thesis (Ph.D.) - Cairo University - Faculty of Science - Department of Physics 
<br/><br/> The spin current through a quantum dot system is calculated using a quantum master equation approach in the weak - coupling regime . To be able to efficiently calculate also at low temperatures the time evolution of the reduced density matrix in the present approach which includes a sum over matsubara terms a high - temperatures approximation was derived which proves to be rather accurate in comparison to the exact results 
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<br/><br/><label>Subjects--Index Terms: </label>Nanotechnology Quantum dots Spin dynamics