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113 papers
Cyclic Ferroelectric Switching and Quantized Charge Transport in CuInPS
Daniel Seleznev, Sobhit Singh, John Bonini +2
The van der Waals layered ferroelectric CuInPS has been found to exhibit a variety of intriguing properties arising from the fact that the Cu ions are unusually mobile in t…
Effect of Pt vacancies on magnetotransport of Weyl semimetal candidate GdPtSb epitaxial films
Dongxue Du, Laxman Raju Thoutam, Konrad T. Genser +5
We examine the effects of Pt vacancies on the magnetotransport properties of Weyl semimetal candidate GdPtSb films, grown by molecular beam epitaxy on c-plane sapphire. Rutherford…
"Double-path" ferroelectrics and the sign of the piezoelectric response
Yubo Qi, Sebastian E. Reyes-Lillo, Karin M. Rabe
In this work, we propose a class of ferroelectrics (which we denote "double-path" ferroelectrics), characterized by two competing polarization switching paths for which the change…
Vibrational fingerprints of ferroelectric hafnia
Shiyu Fan, Sobhit Singh, Xianghan Xu +6
Hafnia (HfO2) is a promising material for emerging chip applications due to its high-k dielectric behaviour, suitability for negative capacitance heterostructures, scalable ferroel…
High-temperature phonon-mediated superconductivity in monolayer Mg2B4C2
Sobhit Singh, ? Aldo H. Romero, José D. Mella +5
A new two-dimensional material { Mg2B4C2, belonging to the family of the conventional superconductor MgB2, is theoretically predicted to exhibit superconductivity with critical tem…
Polarization switching mechanism in HfO from first-principles lattice mode analysis
Yubo Qi, Sobhit Singh, Karin M. Rabe
In this work, we carry out first-principles calculations and lattice mode analysis to investigate the polarization switching mechanism in HfO. Because the stability of the pola…