Current noise geometrically generated by a driven magnet

Abstract

We consider a non-equilibrium cross-response phenomenon, whereby a driven magnetization gives rise to electric shot noise (but no d.c. current). This effect is realized on a nano-scale, with a small metallic ferromagnet which is tunnel-coupled to two normal metal leads. The driving gives rise to a precessing magnetization. The geometrically generated noise is related to a non-equilibrium distribution in the ferromagnet. Our protocol provides a new channel for detecting and characterizing ferromagnetic resonance.

5+4 pages, 3 figures

References in corpus (7)

• Tunnel-barrier-enhanced dc voltage signals induced by magnetization dynamics in magnetic tunnel junctions
• Shot Noise Induced by Nonequilibrium Spin Accumulation
• Geometric Quantum Noise of Spin
• Strong non-equilibrium effects in spin torque systems
• DC spin generation by junctions with AC driven spin-orbit interaction
• Double Quantum Dot scenario for spin resonance in current noise
• A thermally driven spin-transfer-torque system far from equilibrium: enhancement of the thermoelectric current via pumping current

Cited by in corpus (6)

• Charge, spin, and heat shot noises in the absence of average currents: Conditions on bounds at zero and finite frequencies
• Heat-mode excitation in a proximity superconductor
• The fractional Landau-Lifshitz-Gilbert equation
• Breaking of Coulomb blockade by macrospin-assisted tunneling
• Coulomb blockade of chiral Majorana and complex fermions far from equilibrium
• Itinerant magnetism in Hubbard models with long-range interactions