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5 papers · 2 filters
Emergence of ferroelectricity and spin-valley properties in two-dimensional honeycomb binary compounds
Domenico Di Sante, Alessandro Stroppa, Paolo Barone +2
By means of density functional theory calculations, we predict that several two dimensional AB binary monolayers, where A and B atoms belong to group IV or III-V, are ferroelectric…
Direct observation of charge mediated lattice distortions in complex oxide solid solutions
Xiahan Sang, Everett D. Grimley, Changning Niu +2
Material properties depend sensitively on picometer scale atomic displacements introduced by local chemical fluctuations. Direct real-space, high spatial-resolution measurements of…
Magnetic properties of the RbMnPO4 zeolite-ABW type material: a frustrated zigzag spin chain
G. Nénert, J. L. Bettis, R. K. Kremer +5
The crystal structure and magnetic properties of the RbMnPO4 zeolite-ABW type material have been studied by temperature-dependent neutron powder diffraction, low temperature magnet…
Temperature Dependent Valley Relaxation Dynamics in Single Layer WS2 Measured Using Ultrafast Spectroscopy
Cong Mai, Yuriy G. Semenov, Andrew Barrette +5
We measured the lifetime of optically created valley polarization in single layer WS2 using transient absorption spectroscopy. The electron valley relaxation is very short (< 1ps).…
Efficient Interlayer Relaxation and Transition of Excitons in Epitaxial and Non-epitaxial MoS2/WS2 Heterostructures
Yifei Yu, Shi Hu, Liqin Su +8
Semiconductor heterostructures provide a powerful platform for the engineering of excitons. Here we report the excitonic properties of two-dimensional (2D) heterostructures that co…