Monte Carlo studies of the intrinsic time-domain response of nanoscale three-branch junctions
Artikel i vetenskaplig tidskrift, 2012

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.

electrical-properties

3-terminal ballistic junctions

room-temperature

nonlinear operation

Författare

I. Iniguez-de-la-Torre

Universidad de Salamanca

Helena Rodilla

Chalmers, Mikroteknologi och nanovetenskap (MC2), Mikrovågselektronik

J. Mateos

Universidad de Salamanca

T. Gonzalez

Universidad de Salamanca

H. Irie

University of Rochester

Nippon Telegraph and Telephone Corporation

R. Sobolewski

Universidad de Salamanca

Journal of Applied Physics

0021-8979 (ISSN) 1089-7550 (eISSN)

Vol. 111 8 084511

Semiconductor Nanodevices for Room temperature THz Emission and Detection (ROOTHz)

Europeiska kommissionen (FP7), 2010-01-01 -- 2013-01-31.

Styrkeområden

Informations- och kommunikationsteknik

Ämneskategorier

Fysik

DOI

10.1063/1.4704371