Layer-dependent electronic structure of an atomically heavy two-dimensional dichalcogenide
Journal Article
·
· Physical Review. B, Condensed Matter and Materials Physics
- Columbia Univ., New York, NY (United States)
- Brookhaven National Lab. (BNL), Upton, NY (United States). Center for Functional Nanomaterials (CFN)
Here we report angle-resolved photoemission spectroscopic measurements of the evolution of the thickness-dependent electronic band structure of the atomically heavy two-dimensional layered dichalcogenide, tungsten diselenide . Our data, taken on mechanically exfoliated single crystals, provide direct evidence for shifting of the valence-band maximum from (multilayer ) to (single-layer ). Further, our measurements also set a lower bound on the energy of the direct band gap and provide direct measurement of the hole effective mass.
- Research Organization:
- Energy Frontier Research Centers (EFRC) (United States). Re-Defining Photovoltaic Efficiency Through Molecule Scale Control (RPEMSC); Brookhaven National Laboratory (BNL), Upton, NY (United States). National Synchrotron Light Source (NSLS)
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). Materials Sciences & Engineering Division; USDOE Office of Science (SC), Basic Energy Sciences (BES). Scientific User Facilities Division
- Grant/Contract Number:
- SC0001085; FG-02-04-ER-46157; AC02-98CH10886; FG 02-04-ER-46157
- OSTI ID:
- 1384789
- Alternate ID(s):
- OSTI ID: 1180227
- Journal Information:
- Physical Review. B, Condensed Matter and Materials Physics, Vol. 91, Issue 4; Related Information: RPEMSC partners with Columbia University (lead); Brookhaven National Laboratory; Purdue University; ISSN 1098-0121
- Publisher:
- American Physical Society (APS)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
Cited by: 72 works
Citation information provided by
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