Observation of spin dependent photocoductivity in InSb quantum well nanowires
We report on the electrical detection of spin dependent photoconductivity in 500 nm wide InSb quantum well nanowires using the optical orientation of electron spins. By applying weak magnetic fields (≈200 mT), we observe a spin filtering effect of classical origin caused by spin dependent back scatt...
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| Veröffentlicht in: | Applied physics letters 2012-10, Vol.101 (15) |
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| container_title | Applied physics letters |
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| creator | Li, Juerong Gilbertson, A. M. Litvinenko, K. L. Cohen, L. F. Clowes, S. K. |
| description | We report on the electrical detection of spin dependent photoconductivity in 500 nm wide InSb quantum well nanowires using the optical orientation of electron spins. By applying weak magnetic fields (≈200 mT), we observe a spin filtering effect of classical origin caused by spin dependent back scattering of electrons from the sidewalls. Spin dependent features in the longitudinal photovoltage decay with temperature and disappears at characteristic energy (≈50 K) consistent with the theoretical spin splitting and the thermal level broadening. We show that the observed signal is due to the inversion asymmetry of the quantum well, with an additional Zeeman contribution. |
| doi_str_mv | 10.1063/1.4760223 |
| format | Article |
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We show that the observed signal is due to the inversion asymmetry of the quantum well, with an additional Zeeman contribution.</description><identifier>ISSN: 0003-6951</identifier><identifier>EISSN: 1077-3118</identifier><identifier>DOI: 10.1063/1.4760223</identifier><language>eng</language><subject>Asymmetry ; Filtering ; Indium antimonides ; Intermetallics ; Magnetic fields ; Nanowires ; Photovoltages ; Quantum wells</subject><ispartof>Applied physics letters, 2012-10, Vol.101 (15)</ispartof><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c262t-35cd79e433fadeaae4a16a93962011e5d0b2454bd24766826b5a7fc8490927ab3</citedby><cites>FETCH-LOGICAL-c262t-35cd79e433fadeaae4a16a93962011e5d0b2454bd24766826b5a7fc8490927ab3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,776,780,27901,27902</link.rule.ids></links><search><creatorcontrib>Li, Juerong</creatorcontrib><creatorcontrib>Gilbertson, A. 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We show that the observed signal is due to the inversion asymmetry of the quantum well, with an additional Zeeman contribution.</description><subject>Asymmetry</subject><subject>Filtering</subject><subject>Indium antimonides</subject><subject>Intermetallics</subject><subject>Magnetic fields</subject><subject>Nanowires</subject><subject>Photovoltages</subject><subject>Quantum wells</subject><issn>0003-6951</issn><issn>1077-3118</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2012</creationdate><recordtype>article</recordtype><recordid>eNotUM1OAyEYJEYTa_XgG3DUw1bgW6B7NI0_TWp6UM-EBTZiWtgC26Zv75r2NJnMZDIzCN1TMqNEwBOd1VIQxuACTSiRsgJK55doQgiBSjScXqObnH9HyhnABH2s2-zSXhcfA44dzr0P2LreBetCwf1PLNFEO5ji974c8aguw2eLd4MOZdjig9tscNAhHnxy-RZddXqT3d0Zp-j79eVr8V6t1m_LxfOqMkywUgE3VjauBui0dVq7WlOhG2gEI5Q6bknLal63lo1jxJyJlmvZmXndkIZJ3cIUPZxy-xR3g8tFbX02YxUdXByyosCAUckkH62PJ6tJMefkOtUnv9XpqChR_5cpqs6XwR8NG138</recordid><startdate>20121008</startdate><enddate>20121008</enddate><creator>Li, Juerong</creator><creator>Gilbertson, A. 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K.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Observation of spin dependent photocoductivity in InSb quantum well nanowires</atitle><jtitle>Applied physics letters</jtitle><date>2012-10-08</date><risdate>2012</risdate><volume>101</volume><issue>15</issue><issn>0003-6951</issn><eissn>1077-3118</eissn><abstract>We report on the electrical detection of spin dependent photoconductivity in 500 nm wide InSb quantum well nanowires using the optical orientation of electron spins. By applying weak magnetic fields (≈200 mT), we observe a spin filtering effect of classical origin caused by spin dependent back scattering of electrons from the sidewalls. Spin dependent features in the longitudinal photovoltage decay with temperature and disappears at characteristic energy (≈50 K) consistent with the theoretical spin splitting and the thermal level broadening. We show that the observed signal is due to the inversion asymmetry of the quantum well, with an additional Zeeman contribution.</abstract><doi>10.1063/1.4760223</doi></addata></record> |
| fulltext | fulltext |
| identifier | ISSN: 0003-6951 |
| ispartof | Applied physics letters, 2012-10, Vol.101 (15) |
| issn | 0003-6951 1077-3118 |
| language | eng |
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| source | AIP Journals Complete; AIP Digital Archive; Alma/SFX Local Collection |
| subjects | Asymmetry Filtering Indium antimonides Intermetallics Magnetic fields Nanowires Photovoltages Quantum wells |
| title | Observation of spin dependent photocoductivity in InSb quantum well nanowires |
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