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Condensed Matter > Mesoscale and Nanoscale Physics
[Submitted on 20 Sep 2026] Title:Sub-Thermionic Switching in a Negative-Capacitance Bandgap-Change Field-Effect Transistor View a PDF of the paper titled Sub-Thermionic Switching in a Negative-Capacitance Bandgap-Change Field-Effect Transistor, by Rahul B Awale and 4 other authors View PDF HTML (experimental) Abstract:Overcoming the approximately 60~mV/dec Boltzmann limit of the subthreshold swing remains a central challenge for low-power nanoelectronics.
Uncovering complex phonon interactions in Mg 3 Bi 2- x Sb x : topology and avoided crossings
Abstract Mg3Bi2-xSbx compounds have emerged as promising mid-temperature thermoelectric materials, due to their excellent electrical performance and the ultralow thermal conductivity. In this study, we investigate the complex phonon interactions in Mg3Bi2-xSbx compounds and reveal nontrivial symmetry-protected topological crossings and avoided-crossing phenomena in the phonon dispersion, arising from the strong coupling between the acoustic and low-energy optical phonons.
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