Influence of external magnetic field on transport properties of a quantum dot attached to non-collinearly polarized magnetic electrodes

• Autorzy: Wawrzyniak M
• Języki publikacji: EN

Abstrakty

EN

Transport properties of a single level quantum dot attached to non-collinearly polarized magnetic leads and under the influence of external magnetic field have been analyzed theoretically. Description of the considered system has been modeled by the Anderson Hamiltonian with the finite Coulomb repulsion parameter. The analysis has been performed using the equation of motion method for the non-equilibrium Green function within the Hartree-Fock approximation. Numerical illustration of the transport properties such as differential conductance, tunneling magnetoresistance and spin accumulation on the dot under influence of external magnetic field is presented and discussed.

Słowa kluczowe

EN

quantum dot; Hartree–Fock approximation; spin accumulation; tunnelling magnetoresistance

• Wydawca: De Gruyter
• Czasopismo: Materials Science Poland
• Rocznik: 2008
• Tom: Vol. 26, No. 4
• Strony: 1083--1090
• Opis fizyczny: Bibliogr. 5 poz.

Twórcy

autor

Wawrzyniak M

• Department of Physics, Adam Mickiewicz University, ul. Umultowska 85, 61-614 Poznań, Poland

Bibliografia

• [1] WAWRZYNIAK M.,GMITRA M.,BARNAŚ J., J. Alloys Comp., 423 (2006), 264.
• [2] SERGUEEV N.,SUN Q.-F.,GUO H.,WANG B.G.,WANG J., Phys. Rev. B, 65 (2002), 165303.
• [3] ŚWIRKOWICZ R.,WILCZYŃSKI M.,WAWRZYNIAK M.,BARNAŚ J., Phys. Rev. B, 73 (2006), 193312.
• [4] RUDZIŃSKI W.,BARNAŚ J.,ŚWIRKOWICZ R.,WILCZYŃSKI M., Phys. Rev. B, 71 (2005), 205307 .
• [5] MEIR Y.,WINGREEN N.S.,Phys. Rev. Lett. 68 (1992), 2512 .