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Switching from pyroelectric to ferroelectric order in Ni doped CaBaCo4O7
C. Dhanasekhar, A. K Das, Ripandeep Singh +4
We report ferroelectric ordering in Ni substituted CaBaCo4O7. Magnetization showed ferrimagnetic transition at 60 K and an additional transition is found ~ 82 K, further, enhanced…
Magneto-electric coupling in type-I multiferroic ScFeO
Gianluca Giovannetti, Danilo Puggioni, Paolo Barone +3
We investigate the electronic structure and the ferroelectric properties of the recently discovered multiferroic ScFeO by means of ab-initio calculations. The manifold of…
Polar metals as electrodes to suppress the critical-thickness limit in ferroelectric nanocapacitors
Danilo Puggioni, Gianluca Giovannetti, James M. Rondinelli
Enhancing the performance of nanoscale ferroelectric (FE) field-effect transistors and FE capacitors for memory devices and logic relies on miniaturizing the metal electrode/ferroe…
Design of a Mott Multiferroic from a Non-Magnetic Polar Metal
Danilo Puggioni, Gianluca Giovannetti, Massimo Capone +1
We examine the electronic properties of newly discovered "ferroelectric" metal LiOsO combining density-functional and dynamical mean-field theories. We show that the material i…
Kekule' textures, pseudo-spin one Dirac cones and quadratic band crossings in a graphene-hexagonal indium chalcogenide bilayer
Gianluca Giovannetti, Massimo Capone, Jeroen van den Brink +1
Using density-functional theory, we calculate the electronic bandstructure of single-layer graphene on top of hexagonal In_2Te_2 monolayers. The geometric configuration with In and…
Dual nature of the ferroelectric and metallic state in LiOsO
Gianluca Giovannetti, Massimo Capone
Using density functional theory we investigate the lattice instability and electronic structure of recently discovered ferroelectric metal LiOsO. We show that the ferroelectric…