Magnetic skyrmion annihilation by quantum mechanical tunneling
dc.contributor | Aalto-yliopisto | fi |
dc.contributor | Aalto University | en |
dc.contributor.author | Vlasov, Sergei M. | en_US |
dc.contributor.author | Bessarab, Pavel F. | en_US |
dc.contributor.author | Lobanov, Igor S. | en_US |
dc.contributor.author | Potkina, Mariia N. | en_US |
dc.contributor.author | Uzdin, Valery M. | en_US |
dc.contributor.author | Jonsson, Hannes | en_US |
dc.contributor.department | Department of Applied Physics | en |
dc.contributor.groupauthor | Multiscale Statistical and Quantum Physics | en |
dc.date.accessioned | 2020-09-18T06:46:24Z | |
dc.date.available | 2020-09-18T06:46:24Z | |
dc.date.issued | 2020-08 | en_US |
dc.description.abstract | Magnetic skyrmions are nano-scale magnetic states that could be used in various spintronics devices. A central issue is the mechanism and rate of various possible annihilation processes and the lifetime of metastable skyrmions. While most studies have focused on classical over-the-barrier mechanism for annihilation, it is also possible that quantum mechanical tunneling through the energy barrier takes place. Calculations of the lifetime of magnetic skyrmions in a two-dimensional lattice are presented and the rate of tunneling compared with the classical annihilation rate. A remarkably strong variation in the onset temperature for tunneling and the lifetime of the skyrmion is found as a function of the values of parameters in the extended Heisenberg Hamiltonian, i.e. the out-of-plane anisotropy, Dzyaloshinskii-Moriya interaction and applied magnetic field. Materials parameters and conditions are identified where the onset of tunneling could be observed on a laboratory time scale. In particular, it is predicted that skyrmion tunneling could be observed in the PdFe/Ir(111) system when an external magnetic field on the order of 6Tis applied. | en |
dc.description.version | Peer reviewed | en |
dc.format.extent | 8 | |
dc.format.mimetype | application/pdf | en_US |
dc.identifier.citation | Vlasov, S M, Bessarab, P F, Lobanov, I S, Potkina, M N, Uzdin, V M & Jonsson, H 2020, ' Magnetic skyrmion annihilation by quantum mechanical tunneling ', New Journal of Physics, vol. 22, no. 8, 083013 . https://doi.org/10.1088/1367-2630/ab9f6d | en |
dc.identifier.doi | 10.1088/1367-2630/ab9f6d | en_US |
dc.identifier.issn | 1367-2630 | |
dc.identifier.other | PURE UUID: 455d4edd-f8b1-448a-b898-14d22d4af84a | en_US |
dc.identifier.other | PURE ITEMURL: https://research.aalto.fi/en/publications/455d4edd-f8b1-448a-b898-14d22d4af84a | en_US |
dc.identifier.other | PURE FILEURL: https://research.aalto.fi/files/51421790/Vlasov_2020_New_J._Phys._22_083013_1.pdf | en_US |
dc.identifier.uri | https://aaltodoc.aalto.fi/handle/123456789/46504 | |
dc.identifier.urn | URN:NBN:fi:aalto-202009185440 | |
dc.language.iso | en | en |
dc.publisher | IOP Publishing Ltd. | |
dc.relation.ispartofseries | New Journal of Physics | en |
dc.relation.ispartofseries | Volume 22, issue 8 | en |
dc.rights | openAccess | en |
dc.subject.keyword | skyrmion | en_US |
dc.subject.keyword | tunneling | en_US |
dc.subject.keyword | lifetime | en_US |
dc.subject.keyword | instanton | en_US |
dc.subject.keyword | STATES | en_US |
dc.subject.keyword | TRANSITION | en_US |
dc.title | Magnetic skyrmion annihilation by quantum mechanical tunneling | en |
dc.type | A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä | fi |
dc.type.version | publishedVersion |