In order to investigate spin-charge coupling in multiferroic oxides, we measured the optical properties of BiFeO3. Although the direct 300 K charge gap is observed at 2.67 eV, absorption onset actually occurs at much lower energy with Fe3+ excitations at 1.41 and 1.90 eV. Temperature and magnetic-field-induced spectral changes reveal complex interactions between on-site crystal-field and magnetic excitations in the form of magnon sidebands. We employ the sensitivity of these magnon sidebands to map out the magnetic-fieldtemperature phase diagram which demonstrates optical evidence for spin spiral quenching above 20 T and suggests a spin domain reorientation near 10 T
Using the results of x-ray and neutron diffraction experiments, we show that the ferroelectric polar...
Low-energy magnon excitations in multiferroic BiFeO3 were measured in detail as a function of temper...
The ground-state structural and electronic properties of ferroelectric BiFeO3 are calculated using d...
In order to investigate spin-charge coupling in multiferroic oxides, we measured the optical propert...
Complex oxides give rise to rich physics and exotic cross-coupled electronic and magnetic properties...
2020 Author(s). BiFeO3, a typical multiferroic compound, owns complicated interactions among its cha...
International audienceBiFeO3, a typical multiferroic compound, owns complicated interactions among i...
Multiferroic materials have attracted much interest due to the unusual coexistence of ferroelectric ...
International audienceBiFeO3, a typical multiferroic compound, owns complicated interactions among i...
We report the results of direct measurement of remanent hysteresis loops on nanochains of BiFeO3 at ...
A microscopic model for the room-temperature multiferroic BiFeO3 that includes two Dzyaloshinskii- ...
Multiferroic materials have attracted much interest due to the unusual coexistence of ferroelectric ...
Using density-functional dynamical mean-field theory (DFDMFT) we show the importance of multiorbital...
Using density-functional dynamical mean-field theory (DFDMFT) we show the importance of multiorbital...
In this dissertation, a first-principle-based approach is developed to study magnetoelectric effect ...
Using the results of x-ray and neutron diffraction experiments, we show that the ferroelectric polar...
Low-energy magnon excitations in multiferroic BiFeO3 were measured in detail as a function of temper...
The ground-state structural and electronic properties of ferroelectric BiFeO3 are calculated using d...
In order to investigate spin-charge coupling in multiferroic oxides, we measured the optical propert...
Complex oxides give rise to rich physics and exotic cross-coupled electronic and magnetic properties...
2020 Author(s). BiFeO3, a typical multiferroic compound, owns complicated interactions among its cha...
International audienceBiFeO3, a typical multiferroic compound, owns complicated interactions among i...
Multiferroic materials have attracted much interest due to the unusual coexistence of ferroelectric ...
International audienceBiFeO3, a typical multiferroic compound, owns complicated interactions among i...
We report the results of direct measurement of remanent hysteresis loops on nanochains of BiFeO3 at ...
A microscopic model for the room-temperature multiferroic BiFeO3 that includes two Dzyaloshinskii- ...
Multiferroic materials have attracted much interest due to the unusual coexistence of ferroelectric ...
Using density-functional dynamical mean-field theory (DFDMFT) we show the importance of multiorbital...
Using density-functional dynamical mean-field theory (DFDMFT) we show the importance of multiorbital...
In this dissertation, a first-principle-based approach is developed to study magnetoelectric effect ...
Using the results of x-ray and neutron diffraction experiments, we show that the ferroelectric polar...
Low-energy magnon excitations in multiferroic BiFeO3 were measured in detail as a function of temper...
The ground-state structural and electronic properties of ferroelectric BiFeO3 are calculated using d...