40 citations · 258 across the 16 of their papers we have counts for
13 papers · 1 filter
Antiferromagnetic spin canting and Magnetoelectric Multipoles in h-YMnO
M. Ramakrishnan, Y. Joly, Q. N. Meier +7
Hexagonal YMnO is a prototype antiferromagnet which exhibits multiferroic behavior with the ferroelectric and magnetic transitions occurring at different temperatures. We obs…
Magnetic field dependent cycloidal rotation in pristine and Ge doped CoCrO
N Ortiz Hernandez, S Parchenko, J R L Mardegan +11
We report a soft x-ray resonant magnetic scattering study of the spin configuration in multiferroic thin films of CoGeCrO (Ge-CCO) and CoCrO (CC…
Multiple magnetic ordering phenomena in multiferroic o-HoMnO3
Y. W. Windsor, M. Ramakrishnan, L. Rettig +4
Orthorhombic HoMnO3 is a multiferroic in which Mn antiferromagnetic order induces ferroelectricity. A second transition occurs within the multiferroic phase, in which a strong enha…
Structurally assisted melting of excitonic correlations in 1T-TiSe2
Max Burian, Michael Porer, Jose R. L. Mardegan +16
The simultaneous condensation of electronic and structural degrees of freedom gives rise to new states of matter, including superconductivity and charge-density-wave formation. Whe…
Correlation between electronic and structural orders in 1T-TiSe2
Hiroki Ueda, Michael Porer, José R. L. Mardegan +11
The correlation between electronic and crystal structures of 1T-TiSe2 in the charge density wave (CDW) state is studied by x-ray diffraction. Three families of reflections are used…
Field-induced double spin spiral in a frustrated chiral magnet
M. Ramakrishnan, E. Constable, A. Cano +14
We report the direct observation of a magnetic-feld induced long-wavelength spin spiral modulation in the chiral compound Ba3TaFe3Si2O14. This new spin texture emerges out of a chi…
Dynamics of the photoinduced insulator-to-metal transition in a nickelate film
Vincent Esposito, Laurenz Rettig, Elisabeth M. Bothschafter +24
The control of materials properties with light is a promising approach towards the realization of faster and smaller electronic devices. With phases that can be controlled via stra…
Dynamic pathway of the photoinduced phase transition of TbMnO
Elisabeth Bothschafter, Elsa Abreu, Laurenz Rettig +16
We investigate the demagnetization dynamics of the cycloidal and sinusoidal phases of multiferroic TbMnO by means of time-resolved resonant soft x-ray diffraction following exc…
The Spin-Reorientation Transition in TmFeO3
U. Staub, L. Rettig, E. M. Bothschafter +10
X-ray magnetic circular and linear dichroism (XMCD and XMLD) have been used to investigate the Fe magnetic response during the spin reorientation transition (SRT) in TmFeO3. These…
Crystal Symmetry Lowering in Chiral Multiferroic BaTaFeSiO observed by X-Ray Magnetic Scattering
M. Ramakrishnan, Y. Joly, Y. W. Windsor +8
Chiral multiferroic langasites have attracted attention due to their doubly-chiral magnetic ground state within an enantiomorphic crystal. We report on a detailed resonant soft X-r…
Magnetic properties of strained multiferroic CoCr2O4: a soft X-ray study
Y. W. Windsor, C. Piamonteze, M. Ramakrishnan +8
Using resonant soft X-ray techniques we follow the magnetic behavior of a strained epitaxial film of CoCr2O4, a type-II multiferroic. The film is [110]-oriented, such that both the…
Ultrafast Laser-Induced Melting of Long-Range Magnetic Order in Multiferroic TbMnO3
Jeremy A. Johnson, T. Kubacka, M. C. Hoffmann +25
We performed ultrafast time-resolved near-infrared pump, resonant soft X-ray diffraction probe measurements to investigate the coupling between the photoexcited electronic system a…
Crystal structure and phonon softening in Ca3Ir4Sn13
D. G. Mazzone, S. Gerber, J. L. Gavilano +14
We investigated the crystal structure and lattice excitations of the ternary intermetallic stannide Ca3Ir4Sn13 using neutron and x-ray scattering techniques. For T > T* ~ 38 K the…