Spin torque–driven electron paramagnetic resonance of a single spin in a pentacene molecule

Author:

Kovarik Stepan1ORCID,Schlitz Richard1ORCID,Vishwakarma Aishwarya1,Ruckert Dominic1ORCID,Gambardella Pietro1ORCID,Stepanow Sebastian1ORCID

Affiliation:

1. Department of Materials, ETH Zurich, CH-8093 Zürich, Switzerland.

Abstract

Control over quantum systems is typically achieved by time-dependent electric or magnetic fields. Alternatively, electronic spins can be controlled by spin-polarized currents. Here, we demonstrate coherent driving of a single spin by a radiofrequency spin-polarized current injected from the tip of a scanning tunneling microscope into an organic molecule. With the excitation of electron paramagnetic resonance, we established dynamic control of single spins by spin torque using a local electric current. In addition, our work highlights the dissipative action of the spin-transfer torque, in contrast to the nondissipative action of the magnetic field, which allows for the manipulation of individual spins based on controlled decoherence.

Publisher

American Association for the Advancement of Science (AAAS)

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