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en: Direct observation of pressure-induced amorphization of methane/ethane hydrates using Raman and infrared spectroscopy

en: Physical Chemistry Chemical Physics

ja: Physical Chemistry Chemical Physics


en: Pressure suppression of the excitonic insulator state in Ta2NiSe5 observed by optical conductivity

en: Physical Review B

ja: Physical Review B


en: Pressure Induced Spectral Redistribution due to Te2 Dimer Breaking in AuTe2

en: Journal of the Physical Society of Japan


en: Hybridization-Gap Formation and Superconductivity in the Pressure-Induced Semimetallic Phase of the Excitonic Insulator Ta2NiSe5

ja: Journal of the Physical Society of Japan


en: Robust hybridization gap in the Kondo insulator YbB12 probed by femtosecond optical spectroscopy


en: Infrared and Raman Spectroscopic Study of Methane Clathrate Hydrates at Low Temperatures and High Pressures: Dynamics and Cage Occupancy of Methane

en: The Journal of Physical Chemistry C

ja: The Journal of Physical Chemistry C


en: Optical Conductivity Study of f Electron States in YbCu2Ge2 at High Pressures to 20 GPa (accepted)

en: JPS Conference Proceedings

ja: JPS Conference Proceedings


en: Contrasting pressure evolution of f-electron hybridized states in CeRhIn5 and YbNi3 Ga9 : An optical conductivity study


en: Infrared spectroscopy on electronic structures of platinum-group metal pernitrides MN2 (M = Ru, Rh, Ir, and Pt)

en: Physica B : Condensed Matter

ja: Physica B : Condensed Matter


en: Infrared spectroscopy techniques for studying the electronic structures of materials under high pressure

en: Japanese Journal of Applied Physics

ja: Japanese Journal of Applied Physics


en: Pressure dependence of far-infrared reflection spectra in layered iron oxide LuFe2O4

en: Transactions of the Materials Research Society of Japan


en: Emergence of charge degrees of freedom under high pressure in the organic dimer-Mott insulator beta'-(BEDT-TTF)2ICl2

en: Physical Review B, Condensed Matter and Materials Physics


en: Improvement of infrared near-field spectrum by asymmetric interferometer configuration


en: Pressure evolution of f electron hybridized state in CeCoIn5 studied by optical conductivity

en: Journal of Physics: Conference Series

ja: Journal of Physics: Conference Series


en: Pressure Suppression of Spin-Density-Wave Gap in the Optical Conductivity of SrFe2As2

en: Journal of the Physical Society of Japan


en: Infrared and Terahertz Spectroscopy of Strongly Correlated Electron Systems under Extreme Conditions


en: Broadband near-field mid-infrared spectroscopy and application to phonon resonances in quartz

en: Infrared (IR) spectroscopy is a versatile analytical method and nano-scale spatial resolution could be achieved by scattering type near-field optical microscopy (s-SNOM). The spectral bandwidth was, however, limited to approximately 300 cm(-1) with a laser light source. In the present study, the development of a broadband mid-IR near-field spectroscopy with a ceramic light source is demonstrated. A much wider bandwidth (at least 3000 to 1000 cm(-1)) is achieved with a ceramic light source. The experimental data on quartz Si-O phonon resonance bands are well reproduced by theoretical simulations indicating the validity of the present broadband near-field IR spectroscopy.

en: Optics Express

ja: Optics Express


en: Pressure suppression of unconventional charge-density-wave state in PrRu4P12 studied by optical conductivity

ja: Physical Review B, Condensed Matter and Materials Physics


en: Development of Scattering Near-Field Optical Microspectroscopy Apparatus Using an Infrared Synchrotron Radiation Source

en: Optics Communications

ja: Optics Communications


en: A simple method for the Kramers-Kronig analysis of reflectance data measured with diamond anvil cell


en: Photoinduced Dynamics in Pure and Ca-Doped SrTiO3 Studied by Transient Birefringence and Absorption Measurements


en: Optical Conductivity and Electronic Structure of CeRu4Sb12 under High Pressure


en: Infrared studies of f electron systems under high pressure using synchrotron radiation


en: Pressure Tuning of an Ionic Insulator into a Heavy Electron Metal: An Infrared Study of YbS

en: Physical Review Letters

ja: Physical Review Letters


en: Universal scaling in the dynamical conductivity of heavy fermion Ce and Yb compounds

en: Dynamical conductivity spectra [ς(ω)] have been measured for many heavy-fermion (HF) Ce and Yb compounds. A characteristic excitation peak has been observed in the infrared region of ς(ω) for all the compounds, and has been analyzed in terms of a simple model based on conduction (c)-f electron hybridized band. A universal scaling is found between the observed peak energies and the estimated c-f hybridization strengths of these HF compounds. This scaling demonstrates that the model of c-f hybridized band can generally and quantitatively describe the low-energy charge excitations in a wide range of HF compounds.


en: Infrared study of valence transition compound YbInCu4 using cleaved surfaces

en: Physical Review B, Condensed Matter and Materials Physics


en: Photogenerated Carriers in SrTiO3 Probed by Mid-Infrared Absorption

en: Journal of the Physical Society of Japan


en: Photoinduced spin crossover in Fe-picolylamine complex: A far-infrared study on single crystals


en: Indirect and direct energy gaps in Kondo semiconductor YbB12


en: Carrier-induced magnetic circular dichroism in the magnetoresistive pyrochlore Tl2Mn2O7.


en: Pseudogap formation and heavy-carrier dynamics in intermediate-valence YbAl3


en: Infrared study of spin-crossover Fe-picolylamine complex


en: Modification of vibrational selection rules in the photo-induced spin-crossover phase


en: Gap formation in the filled Skutterudite CeOs4Sb12


en: Charge dynamics in the colossal magnetoresistance pyrochlore Tl2Mn2O7


en: Infrared experiments under laser excitations at SPring-8

en: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment


en: Optical conductivity of Yb1-xLuxB12: Energy gap and mid-infrared peak in diluted Kondo semiconductors


en: Pseudogap formation in the intermetallic compounds (Fe1-xVx)3Al

en: Physical Review Letters


en: Optical study of the metal-nonmetal transition in Ni(1-d)S

en: Solid State Communications

ja: Solid State Communications


en: Inhibited recombination of charged magnetoexcitons

en: Physical Review B, Condensed Matter and Materials Physics


en: Optical Conductivity of the Kondo insulator YbB12: Gap formation and low-energy excitations


en: Luminescence spectra of Cr ions in Na(1-x)K(x) and Na(1-x)Tl(x) β-alumina crystals

en: Solid State Ionics

ja: Solid State Ionics