Magnetic Excitations of Graphene in 8-Spinor Realization of Chiral Model

Autor:	Abdullahi Ahmed, M. Iskandar, Yu. P. Rybakov
Rok vydání:	2017
Předmět:	Physics Spinor Condensed matter physics Graphene Magnetic intensity Scalar (physics) law.invention Magnetic field Chiral model law Quantum mechanics General Earth and Planetary Sciences Diamagnetism Physics::Chemical Physics Anisotropy General Environmental Science
Zdroj:	RUDN JOURNAL OF MATHEMATICS, INFORMATION SCIENCES AND PHYSICS. 25:266-275
ISSN:	2312-9743 2312-9735
Popis:	The simplest scalar chiral model of graphene suggested earlier and based on the SU(2) order parameter is generalized by including 8-spinor field as an additional order parameter for the description of spin (magnetic) excitations in graphene. As an illustration we study the interaction of the graphene layer with the external magnetic field. In the case of the magnetic field parallel to the graphene plane the diamagnetic effect is predicted, that is the weakening of the magnetic intensity in the volume of the material. However, for the case of the magnetic field orthogonal to the graphene plane the strengthening of the magnetic intensity is revealed in the central domain (at small r). Thus, the magnetic properties of the graphene prove to be strongly anisotropic.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::a07ac2ec9870b15cbab2ce712dce0b1a https://doi.org/10.22363/2312-9735-2017-25-3-266-275 Zobrazit plný text záznamu