Spin torque driven electron paramagnetic resonance of a single spin in a pentacene molecule
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arXiv
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| Main Authors: | , , , , , |
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| Format: | Preprint |
| Published: |
2024
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| _version_ | 1866910500773691392 |
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| author | Kovarik, Stepan Schlitz, Richard Vishwakarma, Aishwarya Ruckert, Dominic Gambardella, Pietro Stepanow, Sebastian |
| author_facet | Kovarik, Stepan Schlitz, Richard Vishwakarma, Aishwarya Ruckert, Dominic Gambardella, Pietro Stepanow, Sebastian |
| contents | 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. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2406_17522 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Spin torque driven electron paramagnetic resonance of a single spin in a pentacene molecule Kovarik, Stepan Schlitz, Richard Vishwakarma, Aishwarya Ruckert, Dominic Gambardella, Pietro Stepanow, Sebastian Mesoscale and Nanoscale Physics Quantum Physics 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. |
| title | Spin torque driven electron paramagnetic resonance of a single spin in a pentacene molecule |
| topic | Mesoscale and Nanoscale Physics Quantum Physics |
| url | https://arxiv.org/abs/2406.17522 |