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Pseudospin-dependent Zitterbewegung in monolayer graphene
dc.contributor | 0000-0003-0087-8991 | |
dc.creator | Serna, Eduardo | |
dc.creator | Rodríguez Vargas, Isaac | |
dc.creator | Pérez Álvarez, Rolando | |
dc.creator | Diago Cisneros, Leovildo | |
dc.date.accessioned | 2020-04-09T22:24:46Z | |
dc.date.accessioned | 2022-10-14T15:12:12Z | |
dc.date.available | 2020-04-09T22:24:46Z | |
dc.date.available | 2022-10-14T15:12:12Z | |
dc.date.created | 2020-04-09T22:24:46Z | |
dc.date.issued | 2019-05-23 | |
dc.identifier | 0021-8979 | |
dc.identifier | http://ricaxcan.uaz.edu.mx/jspui/handle/20.500.11845/1562 | |
dc.identifier.uri | https://repositorioslatinoamericanos.uchile.cl/handle/2250/4246385 | |
dc.description.abstract | We propose a spintronic device based on a narrow nanoribbon patterned from a monolayer graphene (MLG) sheet, embedded between a film of hexagonal boron nitride and a SiO2 substrate, all comprised under a three top-gated structure, to explore spin-dependent quantum transport of Dirac fermions. We developed a theoretical procedure for describing the pseudospin-related effects and the dynamics of Dirac fermions represented by a one-dimensional Gaussian wave packet (1DGWP), which is electrostatically confined in the device. The free-space 1DGWP time evolution follows expected features. Meanwhile, due to the weak breakdown of the real-spin degeneracy, the 1DGWP barely splits inside the under-barrier region governed by the extrinsic Rashba spin–orbit interaction (SOI-R). Most importantly, departing from the pristine MLG, we have found evidence of trembling antiphase oscillations in the probability density time-distribution for each sublattice state, which we have called the pseudospinorial Zitterbewegung effect (PZBE). The PZBE appears modulated with robust transient character and with a decay time in the femtosecond scale. Interestingly, several features of the PZBE become tunable, even its complete disappearance at the vicinity of the Dirac points or at a symmetric pseudospin configuration. For the proposed quasi-1D MLG device, we have captured evidence of the familiar Klein tunneling and the unusual anti-Klein tunneling, whose interplay for 2D MLG under tunable SOI-R was reported recently. | |
dc.language | eng | |
dc.publisher | American Institute of Physics | |
dc.relation | generalPublic | |
dc.relation | https://doi.org/10.1063/1.5078642 | |
dc.rights | http://creativecommons.org/licenses/by-nc-sa/3.0/us/ | |
dc.rights | Atribución-NoComercial-CompartirIgual 3.0 Estados Unidos de América | |
dc.source | Journal of Applied Physics Vol. 125, pp. 1-13 | |
dc.title | Pseudospin-dependent Zitterbewegung in monolayer graphene | |
dc.type | Artículos de revistas |