Exchange splitting and exchange-induced nonreciprocal photonic behavior of graphene in CrI3-graphene van der Waals heterostructures

被引：11
|
作者：
Holmes, Alexander M. [1 ]
Pakniyat, Samaneh [1 ]
Gangaraj, S. Ali Hassani [2 ]
Monticone, Francesco [2 ]
Weinert, Michael [3 ]
Hanson, George W. [1 ]
机构：
[1] Univ Wisconsin, Dept Elect Engn, 3200 N Cramer St, Milwaukee, WI 53211 USA
[2] Cornell Univ, Sch Elect & Comp Engn, Ithaca, NY 14853 USA
[3] Univ Wisconsin, Dept Phys, Milwaukee, WI 53211 USA
来源：
PHYSICAL REVIEW B | 2020年 / 102卷 / 07期
基金：
美国国家科学基金会;
关键词：
INTRINSIC FERROMAGNETISM; EDGE MAGNETOPLASMONS; CRYSTAL; FIELD;
D O I：
10.1103/PhysRevB.102.075435
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The exchange splitting and resulting electromagnetic response of graphene in a monolayer chromium triiodide (CrI3)-graphene van der Waals heterostructure are considered using a combination of density-functional theory and electromagnetic calculations. Although the effective exchange fields are in the hundreds of Tesla, for the equilibrium separation nonreciprocal effects are found to be weak compared to those for a comparable external magnetic bias. For nonequilibrium separations, nonreciprocal effects can be substantial.
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页数：9
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