Graphene-driven correlated electronic states in one dimensional defects within WS2

Journal Article · Wed Jan 01 00:00:00 EST 2025 · Nature Communications

DOI:https://doi.org/10.1038/s41467-025-60993-x· OSTI ID:2583651

Rossi, Antonio; Thomas, John C; Küchle, Johannes T; Barré, Elyse; Yu, Zhuohang; Zhou, Da; Kumari, Shalini; Tsai, Hsin-Zon; Wong, Ed; Jozwiak, Chris; Bostwick, Aaron; Robinson, Joshua A; Terrones, Mauricio; Raja, Archana; Schwartzberg, Adam; Ogletree, D Frank; Neaton, Jeffrey B; Crommie, Michael F; Allegretti, Francesco; Auwärter, Willi ; Rotenberg, Eli; Weber-Bargioni, Alexander

Tomonaga-Luttinger liquid (TLL) behavior in one-dimensional systems has been predicted and shown to occur at semiconductor-to-metal transitions within two-dimensional materials. Reports of one-dimensional defects hosting a Fermi liquid or a TLL have suggested a dependence on the underlying substrate, however, unveiling the physical details of electronic contributions from the substrate require cross-correlative investigation. Here, we study TLL formation within defectively engineered WS2 atop graphene, where band structure and the atomic environment is visualized with nano angle-resolved photoelectron spectroscopy, scanning tunneling microscopy and spectroscopy, and non-contact atomic force microscopy. Correlations between the local density of states and electronic band dispersion elucidated the electron transfer from graphene into a TLL hosted by one-dimensional metal (1DM) defects. It appears that the vertical heterostructure with graphene and the induced charge transfer from graphene into the 1DM is critical for the formation of a TLL.

• Research Organization: Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
• Sponsoring Organization: US Department of Energy; USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22), Scientific User Facilities Division (SC-22.3 )
• Grant/Contract Number: AC02-05CH11231
• OSTI ID: 2583651
• Journal Information: Nature Communications, Journal Name: Nature Communications Journal Issue: 1 Vol. 16
• Country of Publication: United States
• Language: English