Year: 2022
Type: article
Abstract: We propose a nanoscale rotor embedded between two ferromagnetic electrodes that is driven by spin injection. The spin-rotation coupling allows this nanorotor to continuously receive angular momentum from an injected spin under steady current flow between ferromagnetic electrodes in an antiparallel magnetization configuration. We develop a quantum theory of this angular-momentum transfer and show that a relaxation process from a precession state into a sleeping top state is crucial for the efficient driving of the nanorotor by solving the master equation. Our work clarifies a general strategy for efficient driving of a nanorotor.
Source: Physical Review Letters
Authors: W. Izumida, R. Okuyama, K. Sato, T. Kato, M. Matsuo
Institutions: Tohoku University, Meiji University, Sendai National College of Technology, National Institute of Technology, The University of Tokyo, Japan Atomic Energy Agency, Chinese Academy of Sciences, Kavli Institute for Theoretical Sciences, RIKEN Center for Emergent Matter Science, Advanced Science Research Center, University of Chinese Academy of Sciences
Language: German
Subfield: Atomic and Molecular Physics, and Optics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
Awards: Spin of carbon nanotubes, Quantum Optics on Phonons in Carbon Nanotube, G5659328539, G6692925485, Theoretical study of topological properties of phonons in nanocarbon materials, Construction of quantum transport theory for spintronic devices and proposal of novel devices, G8199632524, Research on Theoretical Formulation and Experimental Confirmation of the Spin Current Driven Einstein-de Haas Effect, G920057190
OpenAlex ID: W3166855397