Characterization of graphene through anisotropy of constant-energy maps in angle-resolved photoemission
Characterization of graphene through anisotropy of constant-energy maps in angle-resolved photoemission
复制标题
DOI：
10.1103/physrevb.77.195403
复制
发表时间：
2008-05-01
影响因子：
3.7
通讯作者：
Rotenberg, Eli
中科院分区：
文献类型：
--
作者：
Mucha-Kruczynski, M.;Tsyplyatyev, O.;Rotenberg, Eli
我们从理论上展示了如何恒定的能量地图的角度分辨的光电发射强度可以用来测试波函数的对称性在石墨烯。对于单层石墨烯，我们证明了所观察到的角度分辨光电子能谱的各向异性是最近被称为电子手性的表现。对于双层石墨烯，我们表明，各向异性的恒定能量的地图可以用来提取信息的大小和符号的层间耦合参数和对称性破缺造成的双层底层基板。
We theoretically show how constant-energy maps of the angle-resolved photoemission intensity can be used to test wave function symmetry in graphene. For monolayer graphene, we demonstrate that the observed anisotropy of angle-resolved photoelectron spectroscopy spectra is a manifestation of what has been recently branded as an electronic chirality. For bilayer graphene, we show that the anisotropy of the constant-energy maps may be used to extract information about the magnitude and sign of interlayer coupling parameters and about symmetry breaking inflicted on a bilayer by the underlying substrate.