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Chern insulators from heavy atoms on magnetic substrates
Kevin F. Garrity, David Vanderbilt
We propose searching for Chern insulators by depositing atomic layers of elements with large spin-orbit coupling (e.g., Bi) on the surface of a magnetic insulator. We argue that su…
Bloch-type Domain Walls in Rhombohedral BaTiO3
Maryam Taherinejad, David Vanderbilt, Pavel Marton +2
Ferroelectric domain walls (FDWs) are usually considered to be of Ising type, but there have been suggestions in recent years that Bloch-type FDWs are also possible in some cases,…
Structure and energetics of a ferroelectric organic crystal of phenazine and chloranilic acid
Kyuho Lee, Brian Kolb, T. Thonhauser +2
We report first-principles calculations for a ferroelectric organic crystal of phenazine and chloranilic acid molecules. Weak intermolecular interactions are properly treated by us…