2026-06-06T20:24:12Zhttps://riubu.ubu.es/oai/requestoai:riubu.ubu.es:10259/76032023-12-19T09:14:15Zcom_10259.4_2527com_10259_5086com_10259_2604col_10259.4_2528
Quantum Revivals in Curved Graphene Nanoflakes
Huerta Sainz, Sergio de la
Ballesteros Castañeda, Ángel
Cordero Tejedor, Nicolás A.
Graphene
Curvature
Quantum revivals
DFT
Phase transition
Graphene nanostructures have attracted a lot of attention in recent years due to their
unconventional properties. We have employed Density Functional Theory to study the mechanical
and electronic properties of curved graphene nanoflakes. We explore hexagonal flakes relaxed with
different boundary conditions: (i) all atoms on a perfect spherical sector, (ii) only border atoms forced
to be on the spherical sector, and (iii) only vertex atoms forced to be on the spherical sector. For
each case, we have analysed the behaviour of curvature energy and of quantum regeneration times
(classical and revival) as the spherical sector radius changes. Revival time presents in one case a
divergence usually associated with a phase transition, probably caused by the pseudomagnetic field
created by the curvature. This could be the first case of a phase transition in graphene nanostructures
without the presence of external electric or magnetic fields.
2023-03-27T09:46:54Z
2023-03-27T09:46:54Z
2022-06
info:eu-repo/semantics/article
http://hdl.handle.net/10259/7603
10.3390/nano12121953
2079-4991
eng
Nanomaterials. 2022, V. 12, n. 12, 1953
https://doi.org/10.3390/nano12121953
info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/PID2019-106802GB-I00/ES/GRUPO CUANTICOS, GRUPOS DE POISSON-LIE, ESPACIOS HOMOGENEOS Y APLICACIONES/
info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/PGC2018-097831-B-I00/ES/FENOMENOS CRITICOS, SIMETRIA Y FASES TOPOLOGICAS EN SISTEMAS CUANTICOS/
http://creativecommons.org/licenses/by/4.0/
info:eu-repo/semantics/openAccess
Atribución 4.0 Internacional
MDPI