Non-local current correlations in ferromagnet/superconductor nanojunctions
When two fully polarized ferromagnetic (F) wires with opposite polarizations make contact with a spin-singlet superconductor, a potential-induced current in wire 1 induces a non-local current of equal magnitude and sign in wire 2. The magnitude of this current has been studied in the tunneling limit...
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| Alternate Titles: | Toward the Controllable Quantum States |
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| Format: | Book Part |
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2003
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| Online Access: | http://hdl.handle.net/10831/49317 |
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edit-10831-493172020-08-08T20:44:02Z Non-local current correlations in ferromagnet/superconductor nanojunctions BOOKTITLE: Toward the Controllable Quantum States Lambert, C J Koltai, J Cserti, J When two fully polarized ferromagnetic (F) wires with opposite polarizations make contact with a spin-singlet superconductor, a potential-induced current in wire 1 induces a non-local current of equal magnitude and sign in wire 2. The magnitude of this current has been studied in the tunneling limit and found to decay exponentially with the distance between the contact. In this paper we propose a new structure in which this novel non- local effect is increased by orders of magnitude. We study the spin-dependent electronic transport of a diffusive nanojunction and demonstrate that when a normal diffusive region is placed between the F leads and superconductor, the non-local initially increases with the separation between the F leads, achieving a maximum and decays as a power law with increasing separation. 2003 info:eu-repo/semantics/bookPart http://hdl.handle.net/10831/49317 elte:Toward the Controllable Quantum States doi:10.1142/9789812705556_0020 elte:2727604 elte:10067248 info:eu-repo/semantics/openAccess application/pdf LOMS: https://edit.elte.hu/xmlui/bitstream/10831/49317/1/Non-local%20current%20correlations%20in%20ferromagnet%20superconductor.pdf |
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When two fully polarized ferromagnetic (F) wires with opposite polarizations make contact with a spin-singlet superconductor, a potential-induced current in wire 1 induces a non-local current of equal magnitude and sign in wire 2. The magnitude of this current has been studied in the tunneling limit and found to decay exponentially with the distance between the contact. In this paper we propose a new structure in which this novel non- local effect is increased by orders of magnitude. We study the spin-dependent electronic transport of a diffusive nanojunction and demonstrate that when a normal diffusive region is placed between the F leads and superconductor, the non-local initially increases with the separation between the F leads, achieving a maximum and decays as a power law with increasing separation. |
| format |
Book Part |
| physical |
application/pdf |
| author |
Lambert, C J |
| spellingShingle |
Lambert, C J Non-local current correlations in ferromagnet/superconductor nanojunctions |
| author_facet |
Lambert, C J Koltai, J Cserti, J |
| author2 |
Koltai, J Cserti, J |
| title |
Non-local current correlations in ferromagnet/superconductor nanojunctions |
| title_short |
Non-local current correlations in ferromagnet/superconductor nanojunctions |
| title_full |
Non-local current correlations in ferromagnet/superconductor nanojunctions |
| title_fullStr |
Non-local current correlations in ferromagnet/superconductor nanojunctions |
| title_full_unstemmed |
Non-local current correlations in ferromagnet/superconductor nanojunctions |
| title_sort |
non-local current correlations in ferromagnet/superconductor nanojunctions |
| publishDate |
2003 |
| publishDateSort |
2003 |
| title_alt |
Toward the Controllable Quantum States |
| url |
http://hdl.handle.net/10831/49317 |
| first_indexed |
2020-08-08T20:44:02Z |
| last_indexed |
2023-09-01T12:06:42Z |
| _version_ |
1775829308962504704 |
| score |
13,3564 |