First principle calculation of potential and multi-channel transport in Fe/MgO/Fe hetero-junction
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| Format: | Artículo científico |
| Language: | en |
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Sociedade Brasileira de Física
2009
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| _version_ | 1876467415809785856 |
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| author | Sebastian Ujevic |
| author_facet | Sebastian Ujevic |
| contents | First principle calculation of potential and multi-channel transport in Fe/MgO/Fe hetero-junction Sebastian Ujevic J. A. Gómez Ivan A. Larkin Física, Astronomía y Matemáticas Hetero Junctions Matrix Theory Electronic Transport In this work we studied the behavior of multi-channel tunneling through a realistic Fe/MgO/Fe hetero-junction ab initio potential. For this purpose we obtained Fe/MgO/Fe(001) hetero-junction effective potentials using the full potential-linear augmented plane wave WIEN2k code together with the generalized gradient approximation for the exchange-correlation potential. Multi-channel tunneling through the Fe/MgO/Fe hetero-junction barrier was studied within a few modes model. The transfer matrix technique was used to calculate the transmission and reflection amplitudes between Bloch states in the semi-infinite leads. The transmission coefficients were used in Fisher and Lee formula for conductance, an expression derived from Kubo formula and valid for any number of scattering channels. 2009 artículo científico 0103-9733 https://www.redalyc.org/articulo.oa?id=46413556021 en http://www.redalyc.org/revista.oa?id=464 Brazilian Journal of Physics application/pdf Sociedade Brasileira de Física Brazilian Journal of Physics (Brasil) Num.1A Vol.39 |
| format | Artículo científico |
| id | redalyc_46413556021 |
| institution | Redalyc |
| language | en |
| publishDate | 2009 |
| publisher | Sociedade Brasileira de Física |
| spellingShingle | First principle calculation of potential and multi-channel transport in Fe/MgO/Fe hetero-junction Sebastian Ujevic Física, Astronomía y Matemáticas Hetero Junctions Matrix Theory Electronic Transport First principle calculation of potential and multi-channel transport in Fe/MgO/Fe hetero-junction Sebastian Ujevic J. A. Gómez Ivan A. Larkin Física, Astronomía y Matemáticas Hetero Junctions Matrix Theory Electronic Transport In this work we studied the behavior of multi-channel tunneling through a realistic Fe/MgO/Fe hetero-junction ab initio potential. For this purpose we obtained Fe/MgO/Fe(001) hetero-junction effective potentials using the full potential-linear augmented plane wave WIEN2k code together with the generalized gradient approximation for the exchange-correlation potential. Multi-channel tunneling through the Fe/MgO/Fe hetero-junction barrier was studied within a few modes model. The transfer matrix technique was used to calculate the transmission and reflection amplitudes between Bloch states in the semi-infinite leads. The transmission coefficients were used in Fisher and Lee formula for conductance, an expression derived from Kubo formula and valid for any number of scattering channels. 2009 artículo científico 0103-9733 https://www.redalyc.org/articulo.oa?id=46413556021 en http://www.redalyc.org/revista.oa?id=464 Brazilian Journal of Physics application/pdf Sociedade Brasileira de Física Brazilian Journal of Physics (Brasil) Num.1A Vol.39 |
| title | First principle calculation of potential and multi-channel transport in Fe/MgO/Fe hetero-junction |
| topic | Física, Astronomía y Matemáticas Hetero Junctions Matrix Theory Electronic Transport |
| url | https://www.redalyc.org/articulo.oa?id=46413556021 |