High-Fidelity Particle-in-Cell Simulations of Thermionic Converters.
Abstract not provided.
Scherpelz, Peter↗
Engineering topics
Scherpelz, Peter
Publications and source records attributed to Scherpelz, Peter.
Optimizing surface defects for atomic-scale electronics: Si dangling bonds
Not Available
Scherpelz, Peter↗
Direct Lattice Shaking of Bose Condensates: Finite Momentum Superfluids
Here, we address band engineering in the presence of periodic driving by numerically shaking a lattice containing a bosonic condensate. By not restricting to simplified band structure models we are able to address arbitrary values of the shaking frequency, amplitude, and interaction strengths g. For "near-resonant" shaking frequencies with moderate g, a quantum phase transition to a finite momentum superfluid is obtained with Kibble-Zurek scaling and quantitative agreement with experiment. We use this successful calibration as a platform to support a more general investigation of the interplay between (one particle) Floquet theory and the effects associated with arbitrary g. Band crossings lead to superfluid destabilization, but where this occurs depends on g in a complicated fashion.
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND↗