Spintronics with NSN Junction of one-dimensional quantum wires : A study of Pure Spin Current and Magnetoresistance
arXiv:0710.5240 · doi:10.1209/0295-5075/81/67001
Abstract
We demonstrate possible scenarios for production of pure spin current and large tunnelling magnetoresistance ratios from elastic co-tunnelling and crossed Andreev reflection across a superconducting junction comprising of normal metal-superconductor-normal metal, where, the normal metal is a one-dimensional interacting quantum wire. We show that there are fixed points in the theory which correspond to the case of pure spin current. We analyze the influence of electron-electron interaction and see how it stabilizes or de-stabilizes the production of pure spin current. These fixed points can be of direct experimental relevance for spintronics application of normal metal-superconductor-normal metal junctions of one-dimensional quantum wires. We also calculate the power law temperature dependence of the crossed Andreev reflection enhanced tunnelling magnetoresistance ratio for the normal metal-superconductor-normal metal junction.
arXiv commentFinal version to appear in Euro. Phys. Lett
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- Quantum wire junctions breaking time reversal invariance
- Duality between normal and superconducting junctions of multiple quantum wires
- Generation of pure spin currents by superconducting proximity effect in quantum dots
- Renormalization group study of transport through a superconducting junction of multiple one-dimensional quantum wires
- Power dissipation for systems with junctions of multiple quantum wires
- Off-critical Luttinger Junctions
- Transport and noise properties of a normal metal-superconductor-normal metal junction with mixed singlet and chiral triplet pairings
- A systematic stability analysis of the renormalisation group flow for the normal-superconductor-normal junction of Luttinger liquid wires
- Resonant spin transport through a superconducting double barrier structure
- Electron-electron interaction effects on transport through mesoscopic superconducting hybrid junctions
- Resonant charge and spin transport in a t-stub coupled to a superconductor
- Scattering Resonances in a Degenerate Fermi Gas