Large tunneling anisotropic magnetoresistance in (Ga, Mn)As nanoconstrictions
We report a large tunneling anisotropic magnetoresistance (TAMR) in (Ga,Mn)As lateral nanoconstrictions. Unlike previously reported tunneling magnetoresistance effects in nanocontacts, the TAMR does not require noncollinear magnetization on either side of the constriction. The nature of the effect i...
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| Veröffentlicht in: | Physical review letters 2005-04, Vol.94 (12), p.127202.1-127202.4, Article 127202 |
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| container_end_page | 127202.4 |
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| container_title | Physical review letters |
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| creator | GIDDINGS, A. D KHALID, M. N WILLIAMS, D GALLAGHER, B. L FOXON, C. T JUNGWIRTH, T WUNDERLICH, J YASIN, S CAMPION, R. P EDMONDS, K. W SINOVA, J ITO, K WANG, K.-Y |
| description | We report a large tunneling anisotropic magnetoresistance (TAMR) in (Ga,Mn)As lateral nanoconstrictions. Unlike previously reported tunneling magnetoresistance effects in nanocontacts, the TAMR does not require noncollinear magnetization on either side of the constriction. The nature of the effect is established by a direct comparison of its phenomenology with that of normal anisotropic magnetoresistance (AMR) measured in the same lateral geometry. The direct link we establish between the TAMR and AMR indicates that TAMR may be observable in other materials showing room temperature AMR and demonstrates that the physics of nanoconstriction magnetoresistive devices can be much richer than previously thought. |
| doi_str_mv | 10.1103/physrevlett.94.127202 |
| format | Article |
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D ; KHALID, M. N ; WILLIAMS, D ; GALLAGHER, B. L ; FOXON, C. T ; JUNGWIRTH, T ; WUNDERLICH, J ; YASIN, S ; CAMPION, R. P ; EDMONDS, K. W ; SINOVA, J ; ITO, K ; WANG, K.-Y</creator><creatorcontrib>GIDDINGS, A. D ; KHALID, M. N ; WILLIAMS, D ; GALLAGHER, B. L ; FOXON, C. T ; JUNGWIRTH, T ; WUNDERLICH, J ; YASIN, S ; CAMPION, R. P ; EDMONDS, K. W ; SINOVA, J ; ITO, K ; WANG, K.-Y</creatorcontrib><description>We report a large tunneling anisotropic magnetoresistance (TAMR) in (Ga,Mn)As lateral nanoconstrictions. Unlike previously reported tunneling magnetoresistance effects in nanocontacts, the TAMR does not require noncollinear magnetization on either side of the constriction. The nature of the effect is established by a direct comparison of its phenomenology with that of normal anisotropic magnetoresistance (AMR) measured in the same lateral geometry. 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The nature of the effect is established by a direct comparison of its phenomenology with that of normal anisotropic magnetoresistance (AMR) measured in the same lateral geometry. 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N</creatorcontrib><creatorcontrib>WILLIAMS, D</creatorcontrib><creatorcontrib>GALLAGHER, B. L</creatorcontrib><creatorcontrib>FOXON, C. T</creatorcontrib><creatorcontrib>JUNGWIRTH, T</creatorcontrib><creatorcontrib>WUNDERLICH, J</creatorcontrib><creatorcontrib>YASIN, S</creatorcontrib><creatorcontrib>CAMPION, R. P</creatorcontrib><creatorcontrib>EDMONDS, K. W</creatorcontrib><creatorcontrib>SINOVA, J</creatorcontrib><creatorcontrib>ITO, K</creatorcontrib><creatorcontrib>WANG, K.-Y</creatorcontrib><collection>Pascal-Francis</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>MEDLINE - Academic</collection><jtitle>Physical review letters</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>GIDDINGS, A. D</au><au>KHALID, M. N</au><au>WILLIAMS, D</au><au>GALLAGHER, B. L</au><au>FOXON, C. T</au><au>JUNGWIRTH, T</au><au>WUNDERLICH, J</au><au>YASIN, S</au><au>CAMPION, R. 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| subjects | Condensed matter: electronic structure, electrical, magnetic, and optical properties Electronic structure and electrical properties of surfaces, interfaces, thin films and low-dimensional structures Electronic transport in condensed matter Electronic transport in multilayers, nanoscale materials and structures Exact sciences and technology Physics Spin polarized transport |
| title | Large tunneling anisotropic magnetoresistance in (Ga, Mn)As nanoconstrictions |
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