Superconductivity of twisted double bi-layer graphene in chiral model

Autor:	Yu P Rybakov, M Umar
Rok vydání:	2021
Předmět:	Superconductivity History Materials science Chiral model Condensed matter physics Graphene law Bi layer Computer Science Applications Education law.invention
Zdroj:	Journal of Physics: Conference Series. 2056:012002
ISSN:	1742-6596 1742-6588
Popis:	Taking into account the sp -hybridization effect for valence electrons in carbon atoms, a very simple chiral model of graphene was suggested some years ago [1]. This model used as a special order parameter the unitary SU(2) -matrix U with the kink-like (or domain wall) structure for the description of electrons in a mono-atomic graphene sheet. However, later the new graphene physics began since studying twisted multilayer configurations revealing unconventional superconducting properties (twist-tronics) [2]. Within the scope of the chiral model these twisted configurations can be described by the so-called “product ansatz” U = U1U2 ▪ ▪ ▪ Un . As an example, the special case of twisted double bi-layer graphene (TDBG) configuration is studied and the corresponding twist angles, for which the superconductivity takes place, are found.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::0b05f67302748cbeffcc0437f906cb97 https://doi.org/10.1088/1742-6596/2056/1/012002 Zobrazit plný text záznamu