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4 papers · 2 filters
The role of the rare earth in the lattice and magnetic coupling in multiferroic h-HoMnO3
J. Liu, Y. Gallais, M-A. Measson +3
We used Raman scattering to study the lattice and magnetic excitations in the hexagonal HoMnO3 single crystals. The E2 phonon mode at 237 cm-1 is affected by the magnetic order. Th…
Magnetic transitions in CaMn7O12 : a Raman observation of spin-phonon couplings
C. Toulouse, C. Martin, M-A. Measson +3
The quadruple Calcium manganite (CaMn7O12) is a multiferroic material that exhibits a giant magnetically-induced ferroelectric polarization which makes it very interesting for magn…
A Microscopic Description of Displacive Coherent Phonons
M. Lakehal, I. Paul
We develop a Hamiltonian-based microscopic description of laser pump induced displacive coherent phonons. The theory captures the feedback of the phonon excitation upon the electro…
Anisotropic Kondo pseudo-gap in URu2Si2
J. Buhot, X. Montiel, Y. Gallais +8
A polarized electronic Raman scattering study reveals the emergence of symmetry dependence in the electronic Raman response of single crystalline URuSi below the Kondo…