@article {31622,
	title = {Large graphene-induced shift of surface-plasmon resonances of gold films: Effective-medium theory for atomically thin materials},
	journal = {Physical Review Research},
	volume = {2},
	number = {1},
	year = {2020},
	note = {PRRESEARCH},
	month = {01/03/},
	pages = {013008},
	publisher = {American Physical Society},
	abstract = {espite successful modeling of graphene as a 0.34-nm-thick optical film synthesized by exfoliation or chemical vapor deposition (CVD), graphene-induced shift of surface-plasmon resonance (SPR) of gold films has remained controversial. Here we report the resolution of this controversy by developing a clean CVD graphene transfer method and extending Maxwell-Garnett effective-medium theory (EMT) to two-dimensional (2D) materials. A SPR shift of 0.24{\textdegree} is obtained and it agrees well with 2D EMT in which wrinkled graphene is treated as a 3-nm graphene/air layered composite, in agreement with the average roughness measured by atomic force microscopy. Because the anisotropic built-in boundary condition of 2D EMT is compatible with graphene{\textquoteright}s optical anisotropy, graphene can be modeled as a film thicker than 0.34 nm without changing its optical property; however, its actual roughness, i.e., effective thickness, will significantly alter its response to strong out-of-plane fields, leading to a larger SPR shift.},
	url = {https://journals.aps.org/prresearch/abstract/10.1103/PhysRevResearch.2.013008},
	author = {Alam, Md Kamrul and Niu, Chao and Yanan Wang and Wei Wang and Yang Li and Chong Dai and Tong, Tian and Shan, Xiaonan and Charlson, Earl and Pei, Steven and Kong, Xiang-Tian and Yandi Hu and Belyanin, Alexey and Stein, Gila and Liu, Zhaoping and Hu, Jonathan and Wang, Zhiming and Bao, Jiming*}
}
