130 citations · 197 across the 19 of their papers we have counts for
21 papers · 1 filter
Symmetry-protected flatband condition for Hamiltonians with local symmetry
Jung-Wan Ryu, Alexei Andreanov, Hee Chul Park +1
We derive symmetry-based conditions for tight-binding Hamiltonians with flatbands to have compact localized eigenstates occupying a single unit cell. The conditions are based on un…
Detecting Strain Effects due to Nanobubbles in Graphene Mach-Zehnder Interferometers
Nojoon Myoung, Taegeun Song, Hee Chul Park
We investigate the effect of elastic strain on a Mach-Zehnder (MZ) interferometer created by graphene p-n junction in quantum Hall regime. We demonstrate that a Gaussian-shaped nan…
Bloch theorem dictated wave chaos in microcavity crystals
Chang-Hwan Yi, Hee Chul Park, Moon Jip Park
Universality class of wave chaos emerges in many areas of science, such as molecular dynamics, optics, and network theory. In this work, we generalize the wave chaos theory to cavi…
Pumping and cooling of nanomechanical vibrations generated by Cooper pair exchange
A. V. Parafilo, L. Y. Gorelik, H. C. Park +1
We consider a nanoelectromechanical system composed of a carbon nanotube suspended between two normal leads and coupled to a superconducting scanning tunneling microscope (STM) tip…
Nanomechanics driven by the superconducting proximity effect
O. M. Bahrova, S. I. Kulinich, L. Y. Gorelik +2
We consider a nanoelectromechanical weak link composed of a carbon nanotube suspended above a trench in a normal metal electrode and positioned in a gap between two superconducting…
A strain-engineered graphene qubit in a nanobubble
Nojoon Myoung, JungYun Han, Hee Chul Park
We propose a controllable qubit in a graphene nanobubble with emergent two-level systems induced by pseudo-magnetic fields. We found that double quantum dots can be created by the…