Visualizing the out-of-plane electronic dispersions in an intercalated transition metal dichalcogenide
Journal Article
·
· Physical Review. B
- Princeton Univ., NJ (United States)
- Arizona State Univ., Tempe, AZ (United States)
- George Mason Univ., Fairfax, VA (United States)
- Paul Scherrer Inst. (PSI), Villigen (Switzerland)
- National Inst. of Standards and Technology (NIST), Gaithersburg, MD (United States); Purdue Univ., West Lafayette, IN (United States)
- National Inst. of Standards and Technology (NIST), Gaithersburg, MD (United States)
Layered transition metal dichalcogenides have a rich phase diagram and they feature two-dimensionality in numerous physical properties. Co1/3NbS2 is one of the newest members of this family where Co atoms are intercalated into the van der Waals gaps between NbS2 layers. Here, we study the three-dimensional electronic band structure of Co1/3NbS2 using both surface and bulk sensitive angle-resolved photoemission spectroscopy. We show that the electronic bands do not fit into the rigid band shift picture after the Co intercalation. Instead, Co1/3NbS2 displays a different orbital character near the Fermi level compared to the pristine NbS2 compound and has a clear band dispersion in the kz direction despite its layered structure. Our photoemission study demonstrates the out-of-plane electronic correlations introduced by the Co intercalation, thus offering a different perspective on this compound. Finally, we propose how Fermi level tuning could lead to exotic phases such as spin density wave instability.
- Research Organization:
- Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES). Materials Sciences & Engineering Division; National Science Foundation (NSF)
- Grant/Contract Number:
- AC02-05CH11231; FG02-05ER46200
- OSTI ID:
- 1885145
- Journal Information:
- Physical Review. B, Journal Name: Physical Review. B Journal Issue: 12 Vol. 105; ISSN 2469-9950
- Publisher:
- American Physical Society (APS)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
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