6533b831fe1ef96bd1298526
RESEARCH PRODUCT
Exploiting Coherence in Nonlinear Spin-Superfluid Transport
Mathias KläuiMathias KläuiYaroslav Tserkovnyaksubject
PhysicsCondensed Matter::Quantum GasesCondensed Matter - Mesoscale and Nanoscale PhysicsSupercurrentGeneral Physics and AstronomyFOS: Physical sciencesSpin engineering02 engineering and technology021001 nanoscience & nanotechnology01 natural sciencesCoherence lengthSuperfluidityNonlinear systemQuantum mechanicsLogic gate0103 physical sciencesMesoscale and Nanoscale Physics (cond-mat.mes-hall)Condensed Matter::Strongly Correlated Electrons010306 general physics0210 nano-technologyCoherence (physics)Electronic circuitdescription
We show how the interference between superfluid spin currents can endow spin circuits with coherent logic functionality. While the hydrodynamic aspects of the linear-response collective spin transport obviate interference features, we focus on the nonlinear regime, where the critical supercurrent is sensitive to the phase accumulated by the condensate in a loop geometry. We propose to control this phase by electrical gating, tuning the spin-condensate coherence length. The nonlinear aspects of the spin superfluidity thus naturally lend themselves to the construction of logic gates, uniquely exploiting the coherence of collective spin currents. Vice versa, this functionality can be used to reveal the fundamental properties of spin superfluids.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2017-07-04 |