dc.creator | Zapata, María Cecilia | |
dc.creator | Nieva, Gladys Leonor | |
dc.creator | Ferreyra, Jorge Mario | |
dc.creator | Villafuerte, Manuel Jose | |
dc.creator | Lanoel, Lucio | |
dc.creator | Bridoux, German | |
dc.date.accessioned | 2020-11-27T20:55:28Z | |
dc.date.accessioned | 2022-10-14T22:18:51Z | |
dc.date.available | 2020-11-27T20:55:28Z | |
dc.date.available | 2022-10-14T22:18:51Z | |
dc.date.created | 2020-11-27T20:55:28Z | |
dc.date.issued | 2019-08 | |
dc.identifier | Zapata, María Cecilia; Nieva, Gladys Leonor; Ferreyra, Jorge Mario; Villafuerte, Manuel Jose; Lanoel, Lucio; et al.; The s - d exchange model as the underlying mechanism of magnetoresistance in ZnO doped with alkali metals; IOP Publishing; Journal of Physics: Condensed Matter; 31; 34; 8-2019; 1-10 | |
dc.identifier | 0953-8984 | |
dc.identifier | http://hdl.handle.net/11336/119280 | |
dc.identifier | CONICET Digital | |
dc.identifier | CONICET | |
dc.identifier.uri | https://repositorioslatinoamericanos.uchile.cl/handle/2250/4313187 | |
dc.description.abstract | High field magnetoresistance has been studied in epitaxial n-type ZnO:Na and ZnO:Li thin films in a temperature range between 4 K and 150 K. The resulting negative magnetoresistance can be well fitted using a semiempirical model of Khosla and Fischer based on third order contributions to the s-d exchange Hamiltonian. The parameters obtained from this model were carefully analyzed. One of these parameters is related to a ratio between electron mobilities at zero field (a non-exchange scattering mobility and an exchange or spin dependent one ). From Hall effect measurements was obtained, displaying a weak temperature dependence in accordance with highly n-doped ZnO while the extracted exhibits an anomalous T-dependence. On the other hand, our magnetoresistance data cannot be properly fitted using Kawabata´s expression based on a weak-localization model. | |
dc.language | eng | |
dc.publisher | IOP Publishing | |
dc.relation | info:eu-repo/semantics/altIdentifier/url/https://iopscience.iop.org/article/10.1088/1361-648X/ab2314 | |
dc.relation | info:eu-repo/semantics/altIdentifier/doi/https://doi.org/10.1088/1361-648X/ab2314 | |
dc.rights | https://creativecommons.org/licenses/by/2.5/ar/ | |
dc.rights | info:eu-repo/semantics/openAccess | |
dc.subject | DOPED ZnO | |
dc.subject | SEMICOMDUCTING THIN FILMS | |
dc.subject | MAGNETORRESISTANCE | |
dc.title | The s - d exchange model as the underlying mechanism of magnetoresistance in ZnO doped with alkali metals | |
dc.type | info:eu-repo/semantics/article | |
dc.type | info:ar-repo/semantics/artículo | |
dc.type | info:eu-repo/semantics/publishedVersion | |