scholarly journals Iterative path-integral summations for the tunneling magnetoresistance in interacting quantum-dot spin valves

2019 ◽  
Vol 99 (19) ◽  
Author(s):  
S. Mundinar ◽  
P. Stegmann ◽  
J. König ◽  
S. Weiss
Keyword(s):  
Quantum Dot ◽  
Path Integral ◽  
Spin Valves ◽  
Tunneling Magnetoresistance

SPIN-DEPENDENT BEATS CREATED BY IRRADIATION OF MICROWAVE FIELD THROUGH A QUANTUM DOT

2011 ◽  
Vol 25 (25) ◽  
pp. 2033-2039
Author(s):  
M. BAGHERI TAGANI ◽  
H. RAHIMPOUR SOLEIMANI
Keyword(s):  
Magnetic Field ◽  
Quantum Dot ◽  
Microwave Field ◽  
Spin Current ◽  
Tunneling Magnetoresistance ◽  
Rate Equations ◽  
Spin Accumulation ◽  
Spin Dependent Transport ◽  
Field Temperature ◽  
Dependent Transport

We study spin-dependent transport through a quantum dot with Zeeman split levels coupled to ferromagnetic leads and under influence of microwave irradiation. Current polarization, spin current, spin accumulation and tunneling magnetoresistance are analyzed using nonequilibrium Green's function formalism and rate equations. Spin-dependent beats in spin resolved currents are observed. The effects of magnetic field, temperature and Coulomb interaction on these beats are studied.

Path Integral Approach for Multi-dimensional Polarons in a Symmetric Quantum Dot

1998 ◽  
Vol 15 (8) ◽  
pp. 585-587 ◽  
Author(s):  
Qing-hu Chen ◽  
Yu-hang Ren ◽  
Yi-gang Cao ◽  
Zheng-kuan Jiao
Keyword(s):  
Quantum Dot ◽  
Path Integral ◽  
Integral Approach ◽  
Path Integral Approach ◽  
Symmetric Quantum

scholarly journals Frequency-dependent current noise through quantum-dot spin valves

2006 ◽  
Vol 74 (7) ◽  
Author(s):  
Matthias Braun ◽  
Jürgen König ◽  
Jan Martinek
Keyword(s):  
Quantum Dot ◽  
Spin Valves ◽  
Current Noise ◽  
Frequency Dependent

Spin current through quantum-dot spin valves

2006 ◽  
Vol 18 (46) ◽  
pp. 10437-10443 ◽  
Author(s):  
J Wang ◽  
D Y Xing
Keyword(s):  
Quantum Dot ◽  
Spin Current ◽  
Spin Valves
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