Scholz, Andreas and Stauber, Tobias and Schliemann, John (2013) Plasmons and screening in a monolayer of MoS2. PHYSICAL REVIEW B, 88 (3): 035135. ISSN 1098-0121, 1550-235X
Full text not available from this repository. (Request a copy)Abstract
We investigate the dynamical dielectric function of a monolayer of molybdenum disulfide within the random phase approximation. While in graphene damping of plasmons is caused by interband transitions, due to the large direct band gap in monolayer MoS2 collective charge excitations enter the intraband electron hole continuum similarly to the situation in two-dimensional electron and hole gases. Since there is no electron-hole symmetry in MoS2, the plasmon energies in p- and n-doped samples clearly differ. The breaking of spin degeneracy caused by the large intrinsic spin-orbit interaction leads to a beating of Friedel oscillations for sufficiently large carrier concentrations, for holes as well as for electrons.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | GRAPHENE PLASMONICS; TRANSISTORS; PHOTONICS; GAS; |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Theroretical Physics > Chair Professor Grifoni > Group John Schliemann |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 06 Apr 2020 07:24 |
| Last Modified: | 06 Apr 2020 07:24 |
| URI: | https://pred.uni-regensburg.de/id/eprint/16352 |
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