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8 papers · 2 filters
Growth of hexagonal BN crystals by traveling-solvent floating zone
Eli Zoghlin, Juliette Plo, Gaihua Ye +11
Large, high-purity single-crystals of hexagonal BN (h-BN) are essential for exploiting its many desirable and interesting properties. Here, we demonstrate via X-ray tomography, X-r…
On the importance of Ni-Au-Ga interdiffusion in the formation of a Ni-Au / p-GaN ohmic contact
Jules Duraz, Hassen Souissi, Maksym Gromovyi +12
The Ni-Au-Ga interdiffusion mechanisms taking place during rapid thermal annealing (RTA) under oxygen atmosphere of a Ni-Au/p-GaN contact are investigated by high-resolution transm…
Study of helium diffusion in yttria: A multiscale approach based on the density functional theory and kinetic Monte Carlo, with transmission electron microscopy and thermo-desorption spectroscopy
Vinicius Oliveira Cavalcanti, Jérôme Roques, Denis Horlait +5
A known issue for future nuclear reactors is helium accumulation inside the steel structure materials, responsible for structural issues such as embrittlement and cracking. One pos…
Gain-loss-engineering: a new platform for extreme anisotropic thermal photon tunneling
Cheng-Long Zhou, Yu-Chen Peng, Yong Zhang +3
We explore a novel approach to achieving anisotropic thermal photon tunneling, inspired by the concept of parity-time symmetry in quantum physics. Our method leverages the modulati…
Short range order and topology of Te-rich amorphous Ge-Sb-Te alloys
Ildikó Pethes, Andrea Piarristeguy, Annie Pradel +6
The structure of evaporated amorphous GeSbTe ( 6, 9, 13) alloys was investigated by neutron diffraction, X-ray diffraction and extended X-ray absorption spe…
Roles of band gap and Kane electronic dispersion in the THz-frequency nonlinear optical response in HgCdTe
Davide Soranzio, Elsa Abreu, Sarah Houver +7
Materials with linear electronic dispersion often feature high carrier mobilities and unusually strong nonlinear optical interactions. In this work, we investigate the THz nonlinea…