3 citations · 3 across the 1 of their papers we have counts for
6 papers
Noise and charge discreteness as ultimate limit for the THz operation of ultra-small electronic devices
Enrique Colomés, Javier Mateos, Tomás González +1
To manufacture faster electron devices, the industry has entered into the nanoscale dimensions and Terahertz (THz) working frequencies. The discrete nature of the few electrons pre…
Antichiral edge states in a modified Haldane nanoribbon
E. Colomés, M. Franz
Topological phases of fermions in two-dimensions are often characterized by chiral edge states. By definition these propagate in the opposite directions at the two parallel edges w…
Limitations of the intrinsic cut-off frequency to correctly quantify the speed of nanoscale transistors
Zhen Zhan, Enrique Colomés, Xavier Oriols
The definition of the intrinsic cut-off frequency () based on the current gain equals to one (0 dB) is critically analyzed. A condition for the validity of the quasi-static es…
Unphysical features in the application of the Boltzmann collision operator in the time dependent modelling of quantum transport
Z. Zhan, E. Colomes, X. Oriols
In this work, the use of the Boltzmann collision operator for dissipative quantum transport is analyzed. Its mathematical role on the description of the time-evolution of the densi…
Time-dependent simulation of particle and displacement currents in THz graphene transistors
Z. Zhan, E. Colomès, A. Benali +2
Although time-independent models provide very useful dynamical information with a reduced computational burden, going beyond the quasi-static approximation provides enriched inform…
Comparing Wigner, Husimi and Bohmian distributions: Which one is a true probability distribution in phase space?
E. Colomés, Z. Zhan, X. Oriols
The Wigner distribution function is a quasi-probability distribution. When properly integrated, it provides the correct charge and current densities, but it gives negative probabil…