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4 papers · 2 filters
Self-sustained micromechanical oscillator with linear feedback
Changyao Chen, Damián H. Zanette, Jeffrey R. Guest +2
Autonomous oscillators, such as clocks and lasers, produce periodic signals \emph{without} any external frequency reference. In order to sustain stable periodic motions, there need…
Spin filtering in all-electrical three-terminal interferometers
Shlomi Matityahu, Amnon Aharony, Ora Entin-Wohlman +1
Unlike the two-terminal device, in which the time-reversal invariant spin-orbit interaction alone cannot polarize the spins, such a polarization can be generated when electrons fro…
Photo-electrons unveil topological transitions in graphene-like systems
Lucila Peralta Gavensky, Gonzalo Usaj, C. A. Balseiro
The topological structure of the wavefunctions of particles in periodic potentials is characterized by the Berry curvature whose integral on the Brillouin zone is a topolo…
Multiple quantum wells for PT-symmetric phononic crystals
A. V. Poshakinskiy, A. N. Poddubny, A. Fainstein
We demonstrate that the parity-time symmetry for sound is realized in the laser-pumped multiple-quantum-well structure. Breaking of the parity-time symmetry for the phonons with wa…