58 citations · 134 across the 7 of their papers we have counts for
7 papers
Discovery of an isostructural phase transition within orthorhombic phase field of CaTiO3
Saurabh Tripathi, Anil Kumar, Sharmila Shirodkar +3
Earths lower mantle extending from 670 to 2,990 km deep is predominantly composed of a perovskite-type (Mg,Fe)SiO3 phase1,2. The perovskite phase undergoes a structural phase trans…
90-degree Ferroelectric Domains in PbTiO3: Experimental Observation and Molecular Dynamics Simulations
Kenta Aoyagi, Takeshi Nishimatsu, Takanori Kiguchi +5
We report observation of 90-degree ferroelectric domain structures in transmission electron microscopy (TEM) of epitaxially-grown films of PbTiO3. Using molecular dynamics (MD) sim…
Temperature-dependent Raman study of CeFeAsO0.9F0.1 Superconductor: Crystal field excitations, phonons and their coupling
Pradeep Kumar, Anil Kumar, Surajit Saha +5
We report temperature-dependent Raman spectra of CeFeAsO0.9F0.1 from 4 K to 300 K in spectral range of 60 to 1800 cm-1 and interpret them using estimates of phonon frequencies obta…
Raman Evidence for Superconducting Gap and Spin-Phonon Coupling in Superconductor Ca(Fe0.95Co0.05)2As2
Pradeep Kumar, Achintya Bera, D. V. S. Muthu +8
Inelastic light scattering studies on single crystal of electron-doped Ca(Fe0.95Co0.05)2As2 superconductor, covering the tetragonal to orthorhombic structural transition as well as…
Excitation and Imaging of Resonant Optical Modes of Au Triangular Nano-Antennas Using Cathodoluminescence Spectroscopy
Anil Kumar, Kin-Hung Fung, James C. Mabon +2
Cathodoluminescence (CL) imaging spectroscopy is an important technique to understand resonant behavior of optical nanoantennas. We report high-resolution CL spectroscopy of triang…
Anomalous Raman scattering from phonons and electrons of superconducting FeSe
Pradeep Kumar, Anil Kumar, Surajit Saha +6
We report interesting anomalies in the temperature dependent Raman spectra of FeSe measured from 3K to 300K in the spectral range from 60 to 1800 cm and determine t…