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Charge order, dynamics, and magneto-structural transition in multiferroic LuFeO
X. S. Xu, M. Angst, T. V. Brinzari +8
We investigated the series of temperature and field-driven transitions in LuFeO by optical and Mössbauer spectroscopies, magnetization, and x-ray scattering in order to und…
Charge order in LuFe2O4: antiferroelectric ground state and coupling to magnetism
M. Angst, R. P. Hermann, A. D. Christianson +10
X-ray scattering by multiferroic LuFe2O4 is reported. Below 320 K, superstructure reflections indicate an incommensurate charge order with propagation close to (1/3,1/3,3/2). The c…
Orientation Dependence of the Anomalous Hall Resistivity in Single Crystals of Yb14MnSb11
Brian C. Sales, Rongying Jin, David Mandrus
The Hall resistivity, electrical resistivity and magnetization of single crystals of the tetragonal ferromagnet Yb14MnSb11 are reported as a function of the direction of the curren…
Coupling Between An Optical Phonon and the Kondo Effect
K. S. Burch, Elbert E. M. Chia, D. Talbayev +4
We explore the ultra-fast optical response of Yb_{14}MnSb_{11}, providing further evidence that this Zintl compound is the first ferromagnetic, under-screened Kondo lattice. These…
Charge Order Superstructure with Integer Iron Valence in Fe2OBO3
M. Angst, P. Khalifah, R. P. Hermann +6
Solution-grown single crystals of Fe2OBO3 were characterized by specific heat, Mossbauer spectroscopy, and x-ray diffraction. A peak in the specific heat at 340 K indicates the ons…
Incommensurate Charge Order Phase in Fe2OBO3 due to Geometrical Frustration
M. Angst, R. P. Hermann, W. Schweika +7
The temperature dependence of charge order in Fe2OBO3 was investigated by resistivity and differential scanning calorimetry measurements, Mossbauer spectroscopy, and synchrotron x-…