Comprehensive optical characterization of atomically thin NbSe2

被引：26

作者：

Hill, Heather M. ^{[1
]}

Rigosi, Albert F. ^{[1
]}

Krylyuk, Sergiy ^{[2
,3
]}

Tian, Jifa ^{[1
,4
,5
]}

Nguyen, Nhan, V ^{[1
]}

Davydov, Albert, V ^{[2
]}

Newell, David B. ^{[1
]}

Walker, Angela R. Hight ^{[1
]}

机构：

[1] NIST, Phys Measurement Lab, Gaithersburg, MD 20899 USA

[2] NIST, Mat Measurement Lab, Gaithersburg, MD 20899 USA

[3] Theiss Res Inc, La Jolla, CA 92037 USA

[4] Purdue Univ, Dept Phys & Astron, W Lafayette, IN 47907 USA

[5] Purdue Univ, Birck Nanotechnol Ctr, W Lafayette, IN 47907 USA

来源：

PHYSICAL REVIEW B | 2018年 / 98卷 / 16期

关键词：

2-DIMENSIONAL MATERIALS; RAMAN-SPECTROSCOPY; TRANSITION; METAL; 2H-TASE2; SUPERCONDUCTIVITY; HETEROSTRUCTURES; FERROMAGNETISM; PROGRESS; ORDER;

D O I：

10.1103/PhysRevB.98.165109

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Transition-metal dichalcogenides (TMDCs) have offered experimental access to quantum confinement in one dimension. In recent years, metallic TMDCs like NbSe2 have taken center stage with many of them exhibiting interesting temperature-dependent properties such as charge density waves and superconductivity. In this paper, we perform a comprehensive optical analysis of NbSe2 by utilizing Raman spectroscopy, differential reflectance contrast, and spectroscopic ellipsometry. These analyses, when coupled with Kramers-Kronig analysis, allow us to extract the dielectric functions of bulk and atomically thin NbSe2 and relate them to the resonant behavior of the Raman spectra.

引用

页数：7

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