Shot noise in magnetic tunnel junctions from first principles
arXiv:1111.2681 · doi:10.1103/PhysRevB.86.020408
Abstract
We compute the shot noise in ballistic and disordered Fe/MgO/Fe tunnel junctions by a wave function-matching method. For tunnel barriers with no more than 5 atomic layers we find a suppression of the Fano factor as a function of the magnetic configuration. For thicker MgO barriers the shot noise is suppressed up to a threshold bias indicating the onset of resonant tunneling. We find excellent agreement with recent experiments when interface disorder is taken into account
5 pages,5 figures
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Cited by in corpus (5)
- Shot Noise in Mesoscopic Systems: from Single Particles to Quantum Liquids
- Controlling shot noise in double-barrier magnetic tunnel junctions
- What Can We Learn from Noise? -- Mesoscopic Nonequilibrium Statistical Physics --
- Negative correlation between the linear and the nonlinear conductance in magnetic tunnel junctions
- Dynamics of Pure Spin Current in High-frequency Quantum Regime