Spin-dependent vibronic response of a carbon radical ion in two-dimensional WS2

Katherine A. Cochrane, Jun-Ho Lee, Christoph Kastl, Jonah B. Haber, Tianyi Zhang, Azimkhan Kozhakhmetov, Joshua A. Robinson, Mauricio Terrones, Jascha Repp, Jeffrey B. Neaton (), Alexander Weber-Bargioni () and Bruno Schuler ()
Additional contact information
Katherine A. Cochrane: Lawrence Berkeley National Laboratory
Jun-Ho Lee: Lawrence Berkeley National Laboratory
Christoph Kastl: Technical University of Munich
Jonah B. Haber: Lawrence Berkeley National Laboratory
Tianyi Zhang: The Pennsylvania State University
Azimkhan Kozhakhmetov: The Pennsylvania State University
Joshua A. Robinson: The Pennsylvania State University
Mauricio Terrones: The Pennsylvania State University
Jascha Repp: University of Regensburg
Jeffrey B. Neaton: Lawrence Berkeley National Laboratory
Alexander Weber-Bargioni: Lawrence Berkeley National Laboratory
Bruno Schuler: Lawrence Berkeley National Laboratory

Nature Communications, 2021, vol. 12, issue 1, 1-10

Abstract: Abstract Atomic spin centers in 2D materials are a highly anticipated building block for quantum technologies. Here, we demonstrate the creation of an effective spin-1/2 system via the atomically controlled generation of magnetic carbon radical ions (CRIs) in synthetic two-dimensional transition metal dichalcogenides. Hydrogenated carbon impurities located at chalcogen sites introduced by chemical doping are activated with atomic precision by hydrogen depassivation using a scanning probe tip. In its anionic state, the carbon impurity is computed to have a magnetic moment of 1 μB resulting from an unpaired electron populating a spin-polarized in-gap orbital. We show that the CRI defect states couple to a small number of local vibrational modes. The vibronic coupling strength critically depends on the spin state and differs for monolayer and bilayer WS2. The carbon radical ion is a surface-bound atomic defect that can be selectively introduced, features a well-understood vibronic spectrum, and is charge state controlled.

Date: 2021
References: View complete reference list from CitEc
Citations: View citations in EconPapers (3)

Downloads: (external link)
https://www.nature.com/articles/s41467-021-27585-x Abstract (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:nat:natcom:v:12:y:2021:i:1:d:10.1038_s41467-021-27585-x

Ordering information: This journal article can be ordered from
https://www.nature.com/ncomms/

DOI: 10.1038/s41467-021-27585-x

Access Statistics for this article

Nature Communications is currently edited by Nathalie Le Bot, Enda Bergin and Fiona Gillespie

More articles in Nature Communications from Nature
Bibliographic data for series maintained by Sonal Shukla () and Springer Nature Abstracting and Indexing ().