Quantum turnstile operation of single-molecule magnets
Author
Moldoveanu, V.
Dinu, I. V.
Tanatar, Bilal
Moca, C. P.
Date
2015Source Title
New Journal of Physics
Print ISSN
0217-9792
Electronic ISSN
1367-2630
Publisher
Institute of Physics Publishing
Volume
17
Pages
1 - 12
Language
English
Type
ArticleItem Usage Stats
152
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Abstract
The time-dependent transport through single-molecule magnets coupled to magnetic or non-magnetic electrodes is studied in the framework of the generalized master equation method. We investigate the transient regime induced by the periodic switching of the source and drain contacts. If the electrodes have opposite magnetizations the quantum turnstile operation allows the stepwise writing of intermediate excited states. In turn, the transient currents provide a way to read these states. Within our approach we take into account both the uniaxial and transverse anisotropy. The latter may induce additional quantum tunneling processes which affect the efficiency of the proposed read-and-write scheme. An equally weighted mixture of molecular spin states can be prepared if one of the electrodes is ferromagnetic. © 2015 IOP Publishing Ltd and Deutsche Physikalische Gesellschaft.
Keywords
Magnetic qubitsQuantum turnstile
Single-molecule magnets
Electrodes
Magnetism
Magnets
Molecules
Generalized master equations
Magnetic qubits
Opposite magnetization
Periodic switching
Quantum turnstile
Single-molecule magnet
Time-dependent transport
Transverse anisotropy
Quantum theory
Permalink
http://hdl.handle.net/11693/21325Published Version (Please cite this version)
http://dx.doi.org/10.1088/1367-2630/17/8/083020Collections
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