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Monte Carlo studies of the intrinsic time-domain response of nanoscale three-branch junctions

I. Iniguez-de-la-Torre ; Helena Rodilla (Institutionen för mikroteknologi och nanovetenskap, Mikrovågselektronik) ; J. Mateos ; T. Gonzalez ; H. Irie ; R. Sobolewski
Journal of Applied Physics (0021-8979). Vol. 111 (2012), 8,
[Artikel, refereegranskad vetenskaplig]

We present a Monte Carlo time-domain study of nanostructured ballistic three-branch junctions (TBJs) excited by both step-function and Gaussian picosecond transients. Our TBJs were based on InGaAs 2-dimensional electron gas heterostructures and their geometry followed exactly the earlier experimental studies. Time-resolved, picosecond transients of both the central branch potential and the between-the-arms current demonstrate that the bandwidth of the intrinsic TBJ response reaches the THz frequency range, being mainly limited by the large-signal, intervalley scattering, when the carrier transport regime changes from ballistic to diffusive.

Nyckelord: 3-terminal ballistic junctions, room-temperature, electrical-properties, nonlinear operation



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Denna post skapades 2012-06-11. Senast ändrad 2015-07-02.
CPL Pubid: 158816

 

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Projekt

Denna publikation är ett resultat av följande projekt:


Semiconductor nanodevices for room temperature THz emission and detection (ROOTHZ) (EC/FP7/243845)