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42 papers · 1 filter
Optical phonons as a testing ground for spin group symmetries
F. Schilberth, M. Kondákor, D. Ukolov +12
Lattice vibrations are highly sensitive to crystal symmetries and their changes across phase transitions. The latter can modify irreducible (co)representations and corresponding in…
Thermal-noise Limits to the Frequency Stability of Burned Spectral Holes
M T Hartman, N Wagner, S Seidelin +1
Techniques in frequency stabilization of lasers to fixed-spacer optical cavities have advanced to the point where the ultimate frequency stabilities are limited by thermal noise in…
Extension of Radiative Transfer Coherent Backscattering RT-CB code to dense discrete random media
Johannes Markkanen, Antti Penttilä
The Radiative transfer coherent backscattering (RT-CB) code is extended to apply to dense discrete random media of optically soft spherical particles. This is achieved by utilizing…
Three-dimensional microstructure generation using generative adversarial neural networks in the context of continuum micromechanics
Alexander Henkes, Henning Wessels
Multiscale simulations are demanding in terms of computational resources. In the context of continuum micromechanics, the multiscale problem arises from the need of inferring macro…
Broadband wavelength-selective isotype heterojunction n+-ZnO/n-Si photodetector with variable polarity
Georgios Chatzigiannakis, Angelina Jaros, Renaud Leturcq +4
An isotype heterojunction n+-ZnO/n-Si photodetector is developed, demonstrating wavelength-selective or broadband operation, depending on the applied bias voltage. Additionally, at…
The effect of structural and magnetic disorder on the 3-5 exchange interactions of LaCaCoIrO
L. Bufaiçal, E. Sadrollahi, F. J. Litterst +7
The delicate balance between spin-orbit coupling, Coulomb repulsion and crystalline electric field interactions observed in Ir-based oxides is usually manifested as exotic magnetic…