Publication: Tuning the supercritical effective charge in gapless graphene via Fermi velocity modifying through the mechanical stretching
Дата
2019
Авторы
Journal Title
Journal ISSN
Volume Title
Издатель
Аннотация
© 2019 Elsevier B.V.We present a theoretical study of the stretched graphene containing the Coulomb impurity. The cases of uniaxial armchair/zigzag and biaxial symmetry stretching are considered. For the uniaxial stretching, we found the gap opening with the non-monotonic dependence between the gap value and the strain. For the biaxial stretching, we observe a monotonic decreasing of Fermi velocity without the gap opening. Non-relativistic ab initio calculations of graphene electronic structure are combined with the analytical solution of relativistic Dirac equation. We found that the sheet stretching could provide a smooth fitting of Fermi velocity and, therefore, the smooth transformation of subcritical Coulomb impurity to the supercritical one.
Описание
Ключевые слова
Цитирование
Tuning the supercritical effective charge in gapless graphene via Fermi velocity modifying through the mechanical stretching / Katin, K.P. [et al.] // Diamond and Related Materials. - 2019. - 100. - 10.1016/j.diamond.2019.107566
URI
https://www.doi.org/10.1016/j.diamond.2019.107566
https://www.scopus.com/record/display.uri?eid=2-s2.0-85073737244&origin=resultslist
http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=Alerting&SrcApp=Alerting&DestApp=WOS_CPL&DestLinkType=FullRecord&UT=WOS:000501621000015
https://openrepository.mephi.ru/handle/123456789/19706
https://www.scopus.com/record/display.uri?eid=2-s2.0-85073737244&origin=resultslist
http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=Alerting&SrcApp=Alerting&DestApp=WOS_CPL&DestLinkType=FullRecord&UT=WOS:000501621000015
https://openrepository.mephi.ru/handle/123456789/19706