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

• 成果类型: Article
• 署名作者: Kovarik, Stepan; Schlitz, Richard; Vishwakarma, Aishwarya; Ruckert, Dominic; Gambardella, Pietro; Stepanow, Sebastian
• 署名单位: Swiss Federal Institutes of Technology Domain; ETH Zurich; Swiss Federal Institutes of Technology Domain; Swiss Federal Laboratories for Materials Science & Technology (EMPA)
• 刊物名称: SCIENCE
• ISSN/ISSBN: 0036-13845
• DOI: 10.1126/science.adh4753
• 发表日期: 2024-06-21
• 页码: 1368-1373
• 关键词: individual atoms; nanoscale; DYNAMICS; state

摘要

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.