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首页> 外文期刊>Physica Scripta: An International Journal for Experimental and Theoretical Physics >Spin and pseudospin in monolayer graphene: Part II. Competition between exchange and spin-orbit interactions
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Spin and pseudospin in monolayer graphene: Part II. Competition between exchange and spin-orbit interactions

机译：单层石墨烯中的自旋和假自旋：第二部分。交换与自旋轨道相互作用之间的竞争

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摘要

Spin and pseudospin properties of monolayer graphene, when both the exchange and extrinsic spin-orbit (SO) interactions are taken into account, are analyzed within a framework of geometric algebra. The rotor equations for even and odd parts of electron bispinor are constructed in three-dimensional (3D) Euclidean space thus providing clear geometrical interpretation to the problem. It is shown that in the presence of combined action of exchange and SO interactions the spin and pseudospin fields in a monolayer graphene from two-dimensional become 3D, with spin and pseudospin components pointing out of the graphene plane. Also, the effect of both interactions on the Berry phase is considered analytically.
机译：当考虑交换和外部自旋轨道（SO）相互作用时，单层石墨烯的自旋和假自旋特性在几何代数的框架内进行分析。电子双旋子偶数和奇数部分的转子方程是在三维（3D）欧几里德空间中构建的，从而为问题提供了清晰的几何解释。结果表明，在交换和SO相互作用共同作用下，单层石墨烯中的自旋和伪自旋场从二维变为3D，自旋和伪自旋分量指向石墨烯平面之外。同样，从分析角度考虑了两种相互作用对贝里相的影响。

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