Volume 78, Number 2, April 2007
|Number of page(s)||5|
|Section||Condensed Matter: Electronic Structure, Electrical, Magnetic and Optical Properties|
|Published online||02 April 2007|
Quantum tunneling of magnetization in single molecular magnets coupled to ferromagnetic reservoirs
Department of Physics, Adam Mickiewicz University - 61-614 Poznań, Poland
2 Institute of Molecular Physics, Polish Academy of Sciences - 60-179 Poznań, Poland
Corresponding author: email@example.com
Accepted: 6 March 2007
The role of spin polarized reservoirs in quantum tunneling of magnetization and relaxation processes in a single molecular magnet (SMM) is investigated theoretically. The SMM is exchange-coupled to the reservoirs and also subjected to a magnetic field varying in time, which enables the quantum tunneling of magnetization. The spin relaxation times are calculated from the Fermi golden rule. The exchange interaction of SMM and electrons in the leads is shown to affect the spin reversal due to quantum tunneling of magnetization. It is shown that the switching is associated with transfer of a certain charge between the leads.
PACS: 75.50.Xx – Molecular magnets / 75.60.Jk – Magnetization reversal mechanisms / 75.45.+j – Macroscopic quantum phenomena in magnetic systems
© Europhysics Letters Association, 2007
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.