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, 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 084511Semiconductor Nanodevices for Room temperature THz Emission and Detection (ROOTHz)
Europeiska kommissionen (EU) (EC/FP7/243845), 2010-01-01 -- 2013-01-31.
Styrkeområden
Informations- och kommunikationsteknik
Ämneskategorier
Fysik
DOI
10.1063/1.4704371