255 citations · 494 across the 9 of their papers we have counts for
10 papers
Evaluation of Born and local effective charges in unoriented materials from vibrational spectra
X. S. Xu, Q. -C. Sun, J. L. Musfeldt
We present an application of the Lorentz model in which fits to vibrational spectra or a Kramers Kronig analysis are employed along with several useful formalisms to quantify micro…
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…
Linear and Nonlinear Optical constants of BiFeO_3
Amit Kumar, R. Rai, Nikolas Podraza +12
Using spectroscopic ellipsometry, the refractive index and absorption versus wavelength of the ferroelectric antiferromagnet Bismuth Ferrite, BiFeO_3 is reported. The material has…
Infrared Investigation of the Charge Ordering Pattern in the Organic Spin Ladder Candidate (DTTTF)2Cu(mnt)2
J. L. Musfeldt, S. Brown, S. Mazumdar +6
We measured the variable temperature infrared response of the spin ladder candidate (DTTTF)2Cu(mnt)2 in order to distinguish between two competing ladder models, rectangular versus…
Optical Properties and Magnetic Field-Induced Phase Transitions in the Ferroelectric State of NiVO
R. C. Rai, J. Cao, S. Brown +7
We use a combination of optical spectra, first principles calculations, and energy dependent magneto-optical measurements to elucidate the electronic structure and to study the pha…
Observation of 300 K High Energy MagnetoDielectric Response in the Bilayer Manganite (LaPr)SrMnO
J. Cao, R. C. Rai, S. Brown +8
We observed a large HEMD effect in the bilayer manganite (LaPr)SrMnO, a direct consequence of field driven spin-glass insulator to ferromagn…