Elemental excitations in MoI3 one-dimensional van der Waals nanowires
Abstract
We report the polarization-dependent Raman spectra of exfoliated MoI3, a van der Waals material with a “true one-dimensional” crystal structure that can be exfoliated to individual atomic chains. The temperature evolution of several Raman features reveals an anomalous behavior suggesting a phase transition of magnetic origin. Theoretical considerations indicate that MoI3 is an easy-plane antiferromagnet with alternating spins along the dimerized chains and with inter-chain helical spin ordering. The calculated frequencies of phonons and magnons are consistent with the interpretation of the experimental Raman data. The obtained results shed light on the specifics of the phononic and magnonic states in MoI3 and provide a strong motivation for further study of this unique material with potential for future spintronic applications.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Nov 28, 2022
- Source ID
- 10.1063/5.0129904
Entities
People
- Adam J Biacchi
- Albert V Davydov
- Alexander A. Balandin
- Angela R. Hight Walker
- Fariborz Kargar
- Felipe H da Jornada
- Huairuo Zhang
- Ludwig Bartels
- Nicholas Sesing
- Roger Lake
- Subhajit Ghosh
- Tehseen Adel
- Thuc Mai
- Tina T Salguero
- Topojit Debnath
- Yanbing Zhu
- Yuhang Liu
- Zahra Barani
Organizations
- National Institute of Standards and Technology
- National Science Foundation
- Office of Naval Research
- Stanford University
- United States Department of Commerce
- University of California
- University of Georgia