# Perfect Spin Filter by Periodic Drive of a Ferromagnetic Quantum Barrier.

@article{Thuberg2017PerfectSF, title={Perfect Spin Filter by Periodic Drive of a Ferromagnetic Quantum Barrier.}, author={Daniel Thuberg and Enrique Mu{\~n}oz and Sebastian Eggert and Sebasti{\'a}n Reyes}, journal={Physical review letters}, year={2017}, volume={119 26}, pages={ 267701 } }

We consider the problem of particle tunneling through a periodically driven ferromagnetic quantum barrier connected to two leads. The barrier is modeled by an impurity site representing a ferromagnetic layer or a quantum dot in a tight-binding Hamiltonian with a local magnetic field and an ac-driven potential, which is solved using the Floquet formalism. The repulsive interactions in the quantum barrier are also taken into account. Our results show that the time-periodic potential causes sharp…

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## References

SHOWING 1-10 OF 69 REFERENCES

Quantum resonance catastrophe for conductance through a periodically driven barrier

- Physics
- 2016

We consider the quantum transport in a tight-binding chain with a locally applied potential which is oscillating in time. The steady state for such a driven impurity can be calculated exactly for any…

Fundamental obstacle for electrical spin injection from a ferromagnetic metal into a diffusive semiconductor

- Materials Science, Physics
- 2000

We have calculated the spin-polarization effects of a current in a two-dimensional electron gas which is contacted by two ferromagnetic metals. In the purely diffusive regime, the current may indeed…

Ferromagnetic proximity effect in a ferromagnet-quantum-dot-superconductor device.

- Physics, MedicinePhysical review letters
- 2010

It is shown that the F lead induces a local exchange field on the quantum dot, which has varying amplitude and sign depending on the charge states, and the interplay of the F and S correlations generates an exchange field related subgap feature.

Quantum dot as spin filter and spin memory

- Physics, MedicinePhysical review letters
- 2000

We consider a quantum dot in the Coulomb blockade regime weakly coupled to current leads and show that in the presence of a magnetic field it acts as an efficient spin filter (at the single-spin…

Spin-filter device based on the Rashba effect using a nonmagnetic resonant tunneling diode.

- Physics, MedicinePhysical review letters
- 2002

Detailed calculations using the InAlAs/InGaAs material system reveal that a splitting of a peak should be observed in the I-V curve of this device as a result of the spin-filtering effect.

Non-equilibrium differential conductance through a quantum dot in a magnetic field

- Physics, Chemistry
- 2005

We derive an exact expression for the differential conductance for a quantum dot in an arbitrary magnetic field for small bias voltage. The derivation is based on the symmetric Anderson model using…

Driven quantum tunneling

- Physics
- 1998

Abstract A contemporary review on the behavior of driven tunneling in quantum systems is presented. Diverse phenomena, such as control of tunneling, higher harmonic generation, manipulation of the…

Tuning the quantum phase transition of bosons in optical lattices via periodic modulation of the s-wave scattering length

- Physics
- 2014

We consider interacting bosons in a 2D square and a 3D cubic optical lattice with a periodic modulation of the s-wave scattering length. At first we map the underlying periodically driven…

Transport through an AC-driven impurity: Fano interference and bound states in the continuum

- Physics
- 2017

Using the Floquet formalism we study transport through an AC-driven impurity in a tight binding chain. The results obtained are exact and valid for all frequencies and barrier amplitudes. At…

Renormalization in Periodically Driven Quantum Dots.

- Physics, MedicinePhysical review letters
- 2016

Employing a newly developed flexible renormalization-group-based approach for periodic driving to an interacting resonant level, it is shown analytically that the magnitude of this effect follows a power law.