Journal article
Driving a pure spin current from nuclear-polarization gradients
Physical review. B, Vol.106(5), 054207
08/25/2022
DOI: 10.1103/PhysRevB.106.054207
Abstract
A pure spin current is predicted to occur when an external magnetic field and a linearly inhomogeneous spin-only field are appropriately aligned. Under these conditions (such as originate from nuclear contact hyperfine fields that do not affect orbital motion) a linear, spin-dependent dispersion for free electrons emerges from the Landau Hamiltonian. The result is that spins of opposite orientation flow in opposite directions giving rise to a pure spin current. A classical model of the spin and charge dynamics reveals intuitive aspects of the full quantum mechanical solution. We propose optical orientation or electrical polarization experiments to demonstrate this outcome.
Details
- Title: Subtitle
- Driving a pure spin current from nuclear-polarization gradients
- Creators
- Nicholas J Harmon - University of IowaMichael E Flatté
- Resource Type
- Journal article
- Publication Details
- Physical review. B, Vol.106(5), 054207
- DOI
- 10.1103/PhysRevB.106.054207
- ISSN
- 2469-9950
- eISSN
- 2469-9969
- Grant note
- DOI: 10.13039/100000001, name: National Science Foundation, award: DMR-1420451, DMR-2014786, DMR-2152540
- Language
- English
- Date published
- 08/25/2022
- Academic Unit
- Electrical and Computer Engineering; Physics and Astronomy
- Record Identifier
- 9984428673402771
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