Magnon-assisted tunnelling in van der Waals heterostructures based on CrBr3
Van der Waals heterostructures, which are composed of layered two-dimensional materials, offer a platform to investigate a diverse range of physical phenomena and could be of use in a variety of applications. Heterostructures containing two-dimensional ferromagnets, such as chromium triiodide (CrI3)...
| Main Authors: | , , , , , , , , , , , , , , , , |
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| Format: | Article |
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Springer Nature
2018
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| Online Access: | https://eprints.nottingham.ac.uk/52450/ |
| _version_ | 1848798728134066176 |
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| author | Ghazaryan, D. Greenaway, M.T. Wang, Z. Guarochico-Moreira, V.H. Vera-Marun, I.J. Yin, J. Liao, Y. Morozov, S.V. Kristanovski, O. Lichtenstein, A.I. Katsnelson, M.I. Withers, F. Mishchenko, A. Eaves, Laurence Geim, A.K. Novoselov, K.S. Misra, A. |
| author_facet | Ghazaryan, D. Greenaway, M.T. Wang, Z. Guarochico-Moreira, V.H. Vera-Marun, I.J. Yin, J. Liao, Y. Morozov, S.V. Kristanovski, O. Lichtenstein, A.I. Katsnelson, M.I. Withers, F. Mishchenko, A. Eaves, Laurence Geim, A.K. Novoselov, K.S. Misra, A. |
| author_sort | Ghazaryan, D. |
| building | Nottingham Research Data Repository |
| collection | Online Access |
| description | Van der Waals heterostructures, which are composed of layered two-dimensional materials, offer a platform to investigate a diverse range of physical phenomena and could be of use in a variety of applications. Heterostructures containing two-dimensional ferromagnets, such as chromium triiodide (CrI3), have recently been reported, which could allow two-dimensional spintronic devices to be developed. Here we study tunnelling through thin ferromagnetic chromium tribromide (CrBr3) barriers that are sandwiched between graphene electrodes. In devices with non-magnetic barriers, conservation of momentum can be relaxed by phonon-assisted tunnelling or by tunnelling through localized states. In contrast, in the devices with ferromagnetic barriers, the major tunnelling mechanisms are the emission of magnons at low temperatures and the scattering of electrons on localized magnetic excitations at temperatures above the Curie temperature. Magnetoresistance in the graphene electrodes further suggests induced spin–orbit coupling and proximity exchange via the ferromagnetic barrier. Tunnelling with magnon emission offers the possibility of spin injection. |
| first_indexed | 2025-11-14T20:24:23Z |
| format | Article |
| id | nottingham-52450 |
| institution | University of Nottingham Malaysia Campus |
| institution_category | Local University |
| last_indexed | 2025-11-14T20:24:23Z |
| publishDate | 2018 |
| publisher | Springer Nature |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | nottingham-524502020-05-04T19:40:21Z https://eprints.nottingham.ac.uk/52450/ Magnon-assisted tunnelling in van der Waals heterostructures based on CrBr3 Ghazaryan, D. Greenaway, M.T. Wang, Z. Guarochico-Moreira, V.H. Vera-Marun, I.J. Yin, J. Liao, Y. Morozov, S.V. Kristanovski, O. Lichtenstein, A.I. Katsnelson, M.I. Withers, F. Mishchenko, A. Eaves, Laurence Geim, A.K. Novoselov, K.S. Misra, A. Van der Waals heterostructures, which are composed of layered two-dimensional materials, offer a platform to investigate a diverse range of physical phenomena and could be of use in a variety of applications. Heterostructures containing two-dimensional ferromagnets, such as chromium triiodide (CrI3), have recently been reported, which could allow two-dimensional spintronic devices to be developed. Here we study tunnelling through thin ferromagnetic chromium tribromide (CrBr3) barriers that are sandwiched between graphene electrodes. In devices with non-magnetic barriers, conservation of momentum can be relaxed by phonon-assisted tunnelling or by tunnelling through localized states. In contrast, in the devices with ferromagnetic barriers, the major tunnelling mechanisms are the emission of magnons at low temperatures and the scattering of electrons on localized magnetic excitations at temperatures above the Curie temperature. Magnetoresistance in the graphene electrodes further suggests induced spin–orbit coupling and proximity exchange via the ferromagnetic barrier. Tunnelling with magnon emission offers the possibility of spin injection. Springer Nature 2018-06-13 Article PeerReviewed Ghazaryan, D., Greenaway, M.T., Wang, Z., Guarochico-Moreira, V.H., Vera-Marun, I.J., Yin, J., Liao, Y., Morozov, S.V., Kristanovski, O., Lichtenstein, A.I., Katsnelson, M.I., Withers, F., Mishchenko, A., Eaves, Laurence, Geim, A.K., Novoselov, K.S. and Misra, A. (2018) Magnon-assisted tunnelling in van der Waals heterostructures based on CrBr3. Nature Electronics, 1 (6). pp. 344-349. ISSN 2520-1131 Electronic devices; Electronic properties and materials; Ferromagnetism; Graphene; Magnetic properties and materials https://www.nature.com/articles/s41928-018-0087-z doi:10.1038/s41928-018-0087-z doi:10.1038/s41928-018-0087-z |
| spellingShingle | Electronic devices; Electronic properties and materials; Ferromagnetism; Graphene; Magnetic properties and materials Ghazaryan, D. Greenaway, M.T. Wang, Z. Guarochico-Moreira, V.H. Vera-Marun, I.J. Yin, J. Liao, Y. Morozov, S.V. Kristanovski, O. Lichtenstein, A.I. Katsnelson, M.I. Withers, F. Mishchenko, A. Eaves, Laurence Geim, A.K. Novoselov, K.S. Misra, A. Magnon-assisted tunnelling in van der Waals heterostructures based on CrBr3 |
| title | Magnon-assisted tunnelling in van der Waals heterostructures based on CrBr3 |
| title_full | Magnon-assisted tunnelling in van der Waals heterostructures based on CrBr3 |
| title_fullStr | Magnon-assisted tunnelling in van der Waals heterostructures based on CrBr3 |
| title_full_unstemmed | Magnon-assisted tunnelling in van der Waals heterostructures based on CrBr3 |
| title_short | Magnon-assisted tunnelling in van der Waals heterostructures based on CrBr3 |
| title_sort | magnon-assisted tunnelling in van der waals heterostructures based on crbr3 |
| topic | Electronic devices; Electronic properties and materials; Ferromagnetism; Graphene; Magnetic properties and materials |
| url | https://eprints.nottingham.ac.uk/52450/ https://eprints.nottingham.ac.uk/52450/ https://eprints.nottingham.ac.uk/52450/ |