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Electron Paramagnetic Resonance of Single Magnetic Moment on a Surface
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Materials Theory.
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Materials Theory.
2016 (English)In: Scientific Reports, ISSN 2045-2322, E-ISSN 2045-2322, Vol. 6, 25584Article in journal (Refereed) Published
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Abstract [en]

We address electron spin resonance of single magnetic moments in a tunnel junction using time-dependent electric fields and spin-polarized current. We show that the tunneling current directly depends on the local magnetic moment and that the frequency of the external electric field mixes with the characteristic Larmor frequency of the local spin. The importance of the spin-polarized current induced anisotropy fields acting on the local spin moment is, moreover, demonstrated. Our proposed model thus explains the absence of an electron spin resonance for a half integer spin, in contrast with the strong signal observed for an integer spin.

Place, publisher, year, edition, pages
2016. Vol. 6, 25584
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Physical Sciences
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URN: urn:nbn:se:uu:diva-297268DOI: 10.1038/srep25584ISI: 000375439000001PubMedID: 27156935OAI: oai:DiVA.org:uu-297268DiVA: diva2:942004
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Swedish Research Council
Available from: 2016-06-23 Created: 2016-06-22 Last updated: 2017-11-28Bibliographically approved

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Berggren, PeterFransson, Jonas

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