Dresden 2009 – scientific programme

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TT: Fachverband Tiefe Temperaturen

TT 37: Transport: Nanoelectronics II - Spintronics and Magnetotransport

TT 37.4: Talk

Thursday, March 26, 2009, 10:15–10:30, HSZ 105

Spin-Electric Coupling in Molecular Magnets — •Mircea Trif¹, Filippo Troiani², Dimitrije Stepanenko¹, and Daniel Loss¹ — ¹Department of Physics, University of Basel, Klingelbergstrasse 82, CH-4056 Basel, Switzerland — ²CNR-INFM National Research Center S3 c/o Dipartimento di Fisica via G. Campi 213/A, 41100, Modena, Italy

We study the triangular antiferromagnet Cu3 in external electric fields, using symmetry group arguments and a Hubbard model approach. We identify a spin-electric coupling caused by an interplay between spin exchange, spin-orbit interaction, and the chirality of the underlying spin texture of the molecular magnet. This coupling allows for the electric control of the spin (qubit) states, e.g., by using an STM tip or a microwave cavity. We propose an experimental test for identifying molecular magnets exhibiting spin-electric effects.