Spin reversal processes in a single molecular magnet between two ferromagnetic leads

• Autorzy: Misiorny M. , Barnaś J.
• Konferencja: Conference New Materials for Magnetoelectronics, Będlewo, 3-6 May 2006
• Języki publikacji: EN

Abstrakty

EN

The effect of spin polarized transport between ferromagnetic metallic electrodes on the relaxation process of a single molecular magnet (SMM) is considered theoretically. The relaxation times are calculated in the second order approximation (Fermi golden rule). The main objective of the work is to analyze the possible mechanisms responsible for the reversal of a SMM's spin. We investigate the regime in which the spin reversal is driven by an external magnetic field. In such a case, the magnetic switching of a SMM is essentially induced by the quantum tunneling of magnetization. The total charge flowing between the electrodes during the reversal process is calculated, and the analysis shows that such a system under consideration can serve as an electronic pump.

Słowa kluczowe

EN

single-molecular magnet; quantum tunneling of magnetization; transport through magnetic structures

• Wydawca: De Gruyter
• Czasopismo: Materials Science Poland
• Rocznik: 2007
• Tom: Vol. 25, No. 2
• Strony: 505--511
• Opis fizyczny: Bibliogr. 10 poz., rys.

Twórcy

autor

Misiorny M.

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

autor

Barnaś J.

• Polish Academy of Sciences, Institute of Molecular Physics, Smoluchowskiego 17, 60-179 Poznań, Poland

Bibliografia

• [1] KIM G.-H., KIM T.-S., Phys. Rev. B, 92 (2004), 137203.
• [2] TIMM C., ELSTE F., Phys. Rev. B, 73 (2006), 235304.
• [3] TIMM C., ELSTE F., Phys. Rev. B, 73 (2006), 235305.
• [4] HEERSCHE H.B., DE GROOT Z., FOLK J.A., VAN DER ZANT H.S.J., ROMEIKE C., WEGEWIJS M.R., ZOBBI L., BARRECA D., TONDELLO E., CORNIA A., Phys. Rev. Lett., 96 (2006), 206801.
• [5] WERNSDORFER W., SESSOLI R., Science, 284 (1999), 133.
• [6] GATTESCHI D., SESSOLI R., Angew. Chem. Int. Ed., 42 (2003), 268.
• [7] APPELBAUM J., Phys. Rev., 17 (1966), 91.
• [8] APPELBAUM J.,Phys. Rev., 154 (1967), 633.
• [9] ZENER C., Proc. Roy. Soc. London Ser. A, 137 (1932), 696.
• [10] RASTELLI E., TASSI A., Phys. Rev. B, 64 (2001), 64410.