Selective Equal-Spin Andreev Reflections Induced by Majorana Fermions
In this work, we find that Majorana fermions induce selective equal spin Andreev reflections (SESARs), in which incoming electrons with certain spin polarization in the lead are reflected as counterpropagating holes with the same spin. The spin polarization direction of the electrons of this Andreev...
| Main Authors: | , , , |
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| Other Authors: | |
| Format: | Article |
| Language: | en_US |
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American Physical Society
2014
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| Online Access: | http://hdl.handle.net/1721.1/85078 https://orcid.org/0000-0001-7809-8157 |
| _version_ | 1811069850929332224 |
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| author | He, James J. Ng, Tai-Kai Lee, Patrick A. Law, Kam Tuen |
| author2 | Massachusetts Institute of Technology. Department of Physics |
| author_facet | Massachusetts Institute of Technology. Department of Physics He, James J. Ng, Tai-Kai Lee, Patrick A. Law, Kam Tuen |
| author_sort | He, James J. |
| collection | MIT |
| description | In this work, we find that Majorana fermions induce selective equal spin Andreev reflections (SESARs), in which incoming electrons with certain spin polarization in the lead are reflected as counterpropagating holes with the same spin. The spin polarization direction of the electrons of this Andreev reflected channel is selected by the Majorana fermions. Moreover, electrons with opposite spin polarization are always reflected as electrons with unchanged spin. As a result, the charge current in the lead is spin polarized. Therefore, a topological superconductor which supports Majorana fermions can be used as a novel device to create fully spin-polarized currents in paramagnetic leads. We point out that SESARs can also be used to detect Majorana fermions in topological superconductors. |
| first_indexed | 2024-09-23T08:17:57Z |
| format | Article |
| id | mit-1721.1/85078 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T08:17:57Z |
| publishDate | 2014 |
| publisher | American Physical Society |
| record_format | dspace |
| spelling | mit-1721.1/850782022-09-30T08:51:38Z Selective Equal-Spin Andreev Reflections Induced by Majorana Fermions He, James J. Ng, Tai-Kai Lee, Patrick A. Law, Kam Tuen Massachusetts Institute of Technology. Department of Physics Lee, Patrick A. In this work, we find that Majorana fermions induce selective equal spin Andreev reflections (SESARs), in which incoming electrons with certain spin polarization in the lead are reflected as counterpropagating holes with the same spin. The spin polarization direction of the electrons of this Andreev reflected channel is selected by the Majorana fermions. Moreover, electrons with opposite spin polarization are always reflected as electrons with unchanged spin. As a result, the charge current in the lead is spin polarized. Therefore, a topological superconductor which supports Majorana fermions can be used as a novel device to create fully spin-polarized currents in paramagnetic leads. We point out that SESARs can also be used to detect Majorana fermions in topological superconductors. United States. Dept. of Energy (Grant DE-FG-02-03-ER46076) 2014-02-24T18:05:34Z 2014-02-24T18:05:34Z 2014-01 2013-09 Article http://purl.org/eprint/type/JournalArticle 0031-9007 1079-7114 http://hdl.handle.net/1721.1/85078 He, James J., T. K. Ng, Patrick A. Lee, and K. T. Law. “Selective Equal-Spin Andreev Reflections Induced by Majorana Fermions.” Physical Review Letters 112, no. 3 (January 2014). © 2014 American Physical Society https://orcid.org/0000-0001-7809-8157 en_US http://dx.doi.org/10.1103/PhysRevLett.112.037001 Physical Review Letters Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. application/pdf American Physical Society American Physical Society |
| spellingShingle | He, James J. Ng, Tai-Kai Lee, Patrick A. Law, Kam Tuen Selective Equal-Spin Andreev Reflections Induced by Majorana Fermions |
| title | Selective Equal-Spin Andreev Reflections Induced by Majorana Fermions |
| title_full | Selective Equal-Spin Andreev Reflections Induced by Majorana Fermions |
| title_fullStr | Selective Equal-Spin Andreev Reflections Induced by Majorana Fermions |
| title_full_unstemmed | Selective Equal-Spin Andreev Reflections Induced by Majorana Fermions |
| title_short | Selective Equal-Spin Andreev Reflections Induced by Majorana Fermions |
| title_sort | selective equal spin andreev reflections induced by majorana fermions |
| url | http://hdl.handle.net/1721.1/85078 https://orcid.org/0000-0001-7809-8157 |
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