2016/01/31 by P. Berggren, Jonas Fransson, J. Fransson · 22 citations
Engineering · Physics and Astronomy · #Condensed matter physics #Electron #Electron magnetic dipole moment #Ferromagnetic resonance #Larmor precession #Magnetic field #Magnetic moment #Magnetic resonance imaging #Magnetization #Molecular Junctions and Nanostructures #Physics #Physics of Superconductivity and Magnetism #Pulsed EPR #Quantum and electron transport phenomena #Quantum mechanics #Spin (aerodynamics) #Spin Hall effect #Spin echo #Spin polarization #Zero field splitting #cond-mat.mes-hall #physics.atm-clus
paper · pdf · doi:10.1038/srep25584
published in Scientific Reports 6(1), 25584 (Nature Portfolio) · 6 pages, 2 figures, as published
openalex publication_date 2016/05/09 · arxiv created 2016/05/10 · arxiv updated 2016/05/11 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
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.