Measurement of the optical dielectric function of monolayer transition-metal dichalcogenides: ${\mathrm{MoS}}_{2}$, $\mathrm{Mo}\mathrm{S}{\mathrm{e}}_{2}$, ${\mathrm{WS}}_{2}$, and $\mathrm{WS}{\mathrm{e}}_{2}$

Milestone

Measurement of the optical dielectric function of monolayer transition-metal dichalcogenides: ${MoS}_{2}$ , $Mo S e_{2}$ , ${WS}_{2}$ , and $WS e_{2}$

Yilei Li, Alexey Chernikov, Xian Zhang, Albert Rigosi, Heather M. Hill, Arend M. van der Zande, Daniel A. Chenet, En-Min Shih, James Hone, and Tony F. Heinz

Phys. Rev. B 90, 205422 – Published 17 November 2014

An article within the collection: Physical Review B 50^th Anniversary Milestones

Abstract

We report a determination of the complex in-plane dielectric function of monolayers of four transition-metal dichalcogenides: $Mo S_{2}$ , $Mo S e_{2}$ , $W S_{2}$ , and $WS e_{2}$ , for photon energies from 1.5 to 3 eV. The results were obtained from reflection spectra using a Kramers-Kronig constrained variational analysis. From the dielectric functions, we obtain the absolute absorbance of the monolayers. We also provide a comparison of the dielectric function for the monolayers with the corresponding bulk materials.

Received 11 August 2014

DOI:https://doi.org/10.1103/PhysRevB.90.205422

Collections

This article appears in the following collection:

Physical Review B 50^th Anniversary Milestones

These Milestone studies represent lasting contributions to physics by way of reporting significant discoveries, initiating new areas of research, or substantially enhancing the conceptual tools for making progress in the burgeoning field of condensed matter physics.

Authors & Affiliations

Yilei Li¹, Alexey Chernikov¹, Xian Zhang², Albert Rigosi¹, Heather M. Hill¹, Arend M. van der Zande^2,3, Daniel A. Chenet², En-Min Shih¹, James Hone², and Tony F. Heinz^1,*

¹Departments of Physics and Electrical Engineering, Columbia University, 538 West 120th St., New York, New York 10027, USA
²Department of Mechanical Engineering, Columbia University, 500 West 120th Street, New York, New York 10027, USA
³Energy Frontier Research Center, Columbia University, 500 West 120th Street, New York, New York 10027, USA

^*Author to whom correspondence should be addressed: tony.heinz@columbia.edu

Article Text (Subscription Required)

Click to Expand

Supplemental Material (Subscription Required)

Click to Expand

References (Subscription Required)

Click to Expand

Issue

Vol. 90, Iss. 20 — 15 November 2014

Reuse & Permissions

Access Options

Article Available via CHORUS

Download Accepted Manuscript

Author publication services for translation and copyediting assistance advertisement

Physical Review B

covering condensed matter and materials physics

Measurement of the optical dielectric function of monolayer transition-metal dichalcogenides: MoS2, MoSe2, WS2, and WSe2

Yilei Li, Alexey Chernikov, Xian Zhang, Albert Rigosi, Heather M. Hill, Arend M. van der Zande, Daniel A. Chenet, En-Min Shih, James Hone, and Tony F. Heinz

Phys. Rev. B 90, 205422 – Published 17 November 2014

An article within the collection: Physical Review B 50th Anniversary Milestones

Abstract

Collections

Physical Review B 50th Anniversary Milestones

Authors & Affiliations

Article Text (Subscription Required)

Supplemental Material (Subscription Required)

References (Subscription Required)

Issue

Access Options

Authorization Required

Other Options

Download & Share

Images

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Log In

Search

Article Lookup

Paste a citation or DOI

Enter a citation

Measurement of the optical dielectric function of monolayer transition-metal dichalcogenides: ${MoS}_{2}$ , $Mo S e_{2}$ , ${WS}_{2}$ , and $WS e_{2}$

An article within the collection: Physical Review B 50^th Anniversary Milestones

Physical Review B 50^th Anniversary Milestones