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Title: Adiabatic Amplification of Plasmons and Demons in 2D Systems

Authors:
; ;
Publication Date:
Sponsoring Org.:
USDOE
OSTI Identifier:
1294690
Grant/Contract Number:
SC0012592
Resource Type:
Journal Article: Publisher's Accepted Manuscript
Journal Name:
Physical Review Letters
Additional Journal Information:
Journal Volume: 117; Journal Issue: 7; Related Information: CHORUS Timestamp: 2016-08-12 18:10:32; Journal ID: ISSN 0031-9007
Publisher:
American Physical Society
Country of Publication:
United States
Language:
English

Citation Formats

Sun, Zhiyuan, Basov, D. N., and Fogler, M. M.. Adiabatic Amplification of Plasmons and Demons in 2D Systems. United States: N. p., 2016. Web. doi:10.1103/PhysRevLett.117.076805.
Sun, Zhiyuan, Basov, D. N., & Fogler, M. M.. Adiabatic Amplification of Plasmons and Demons in 2D Systems. United States. doi:10.1103/PhysRevLett.117.076805.
Sun, Zhiyuan, Basov, D. N., and Fogler, M. M.. 2016. "Adiabatic Amplification of Plasmons and Demons in 2D Systems". United States. doi:10.1103/PhysRevLett.117.076805.
@article{osti_1294690,
title = {Adiabatic Amplification of Plasmons and Demons in 2D Systems},
author = {Sun, Zhiyuan and Basov, D. N. and Fogler, M. M.},
abstractNote = {},
doi = {10.1103/PhysRevLett.117.076805},
journal = {Physical Review Letters},
number = 7,
volume = 117,
place = {United States},
year = 2016,
month = 8
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record at 10.1103/PhysRevLett.117.076805

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  • A theoretical analysis is presented of plasmons in gated two-dimensional electron channels supporting dc currents. In contrast to previous treatments, the model takes into account complete mode spectra and transverse field distributions. Conditions for plasmon amplification are determined, and asymmetric plasmonic oscillators are analysed. The results are compared with the traditional treatment of the Dyakonov-Shur instability. The limitations of the traditional treatment are thus revealed. The present electrodynamically rigorous model can be used to design and analyse terahertz plasmonic oscillators.
  • It is shown theoretically that stimulated generation of terahertz radiation by plasmons in graphene with a planar distributed Bragg resonator is possible at two different frequencies for each plasmon mode. This behavior may be attributed to the superradiance of the collective plasmon mode, which is associated with superlinear increase in the radiative damping of the plasmons with increase in pumping power. As a result, the curves of the radiative damping and the plasmon gain as a function of the pumping power intersect at two points corresponding to different generation conditions.
  • A rigorous theoretical and computational model is developed for the plasma-wave propagation in high electron mobility transistor structures with electron injection from a resonant tunneling diode at the gate. We discuss the conditions in which low-loss and sustainable plasmon modes can be supported in such structures. The developed analytical model is used to derive the dispersion relation for these plasmon-modes. A non-linear full-wave-hydrodynamic numerical solver is also developed using a finite difference time domain algorithm. The developed analytical solutions are validated via the numerical solution. We also verify previous observations that were based on a simplified transmission line model. Itmore » is shown that at high levels of negative differential conductance, plasmon amplification is indeed possible. The proposed rigorous models can enable accurate design and optimization of practical resonant tunnel diode-based plasma-wave devices for terahertz sources, mixers, and detectors, by allowing a precise representation of their coupling when integrated with other electromagnetic structures.« less