342 citations · 841 across the 8 of their papers we have counts for
9 papers
Multichannel Phonon Interconversion Drives 90 Polarization Rotation for Stable Domain Walls in Hafnium Oxide
Fatoye Sawyerr, Hamoon Fahrvandi, Pawan Kumar +11
Polarization rotation is a fundamental mechanism in ferroelectric materials, yet how such rotation arises microscopically in fluorite ferroelectrics and gives rise to distinct doma…
Spin-Induced Polarizations and Non-Reciprocal Directional Dichroism of Multiferroic BiFeO
Randy S. Fishman, Jun Hee Lee, Sándor Bordács +3
A microscopic model for the room-temperature multiferroic BiFeO that includes two Dzyaloshinskii-Moriya interactions and single-ion anisotropy along the ferroelectric polarizat…
Optical diode effect in the room-temperature multiferroic BiFeO$_3
I. Kezsmarki, U. Nagel, S. Bordacs +5
Multiferroics permit the magnetic control of the electric polarization and electric control of the magnetization. These static magnetoelectric (ME) effects are of enormous interest…
Strong spin-phonon coupling in infrared and Raman spectra of SrMnO3
S. Kamba, V. Goian, V. Skoromets +9
Infrared reflectivity spectra of cubic SrMnO ceramics reveal 18 % stiffening of the lowest-frequency phonon below the antiferromagnetic phase transition occurring at T…
Reversal of the lattice structure in SrCoOx epitaxial thin films studied by real-time optical spectroscopy and first-principles calculations
Woo Seok Choi, Hyoungjeen Jeen, Jun Hee Lee +4
Using real-time spectroscopic ellipsometry, we directly observed a reversible lattice and electronic structure evolution in SrCoOx (x = 2.5 - 3) epitaxial thin films. Drastically d…
Strong coupling of Jahn-Teller distortion to oxygen-octahedron rotation and functional properties in epitaxially-strained orthorhombic LaMnO
Jun Hee Lee, Kris T. Delaney, Eric Bousquet +2
First-principles calculations reveal a large cooperative coupling of Jahn-Teller (JT) distortion to oxygen-octahedron rotations in perovskite LaMnO. The combination of the two…
Large spin-phonon coupling and magnetically-induced phonon anisotropy in SrO perovskites (=V,Cr,Mn,Fe,Co)
Jun Hee Lee, Karin M. Rabe
First-principles calculations reveal large zone-center spin-phonon coupling and magnetically-driven phonon anisotropy in cubic perovskites SrO (=V,Cr,Mn,Fe,Co). In partic…
Coupled magnetic-ferroelectric metal-insulator transitions in epitaxially-strained SrCoO from first principles
Jun Hee Lee, Karin M. Rabe
First-principles calculations of the epitaxial-strain phase diagram of perovskite SrCoO are presented. Through combination of the large spin-phonon coupling with polarization…
Epitaxial-strain-induced multiferroicity in SrMnO from first principles
Jun Hee Lee, Karin M. Rabe
First-principles density-functional calculations reveal a large spin-phonon coupling in cubic SrMnO, with ferromagnetic ordering producing a polar instability. Through combin…