Optical conductivity of oxides

F Gervais - Materials Science and Engineering: R: Reports, 2002 - Elsevier
Optical conductivity spectra of conducting oxides, cuprates, including high-Tc
superconductors, nickelates, manganites, doped titanates, barium–lead–bismuth oxides …

Ultrafast conductivity dynamics in colossal magnetoresistance manganites

RD Averitt, AI Lobad, C Kwon, SA Trugman… - Physical review …, 2001 - APS
Ultrafast picosecond measurements of optically induced changes in the absolute
conductivity (0.4–1.0 THz) of La 0.7 M 0.3 MnO 3 thin films (M= Ca, Sr) from 10 K to∼ 0. 9 T …

Anomalous High Pressure Dependence of the Jahn-Teller Phonon in

A Congeduti, P Postorino, E Caramagno, M Nardone… - Physical Review Letters, 2001 - APS
Abstract Raman spectra of La 0.75 Ca 0.25 MnO 3 have been collected for the first time over
a wide pressure range (0–14 GPa) using a diamond anvil cell. The frequency range …

Spin–lattice interaction in colossal magnetoresistance manganites

AI Lobad, RD Averitt, C Kwon, AJ Taylor - Applied Physics Letters, 2000 - pubs.aip.org
The metal–insulator transition and underlying spin dynamics in La 0.7 D 0.3 MnO 3 (D= Ca,
Sr) are investigated using optical pump–probe spectroscopy at 1.5 eV. Our measurements …

Low-energy charge dynamics in THz time-domain spectroscopic studies

N Kida, M Hangyo, M Tonouchi - Physical Review B, 2000 - APS
Direct experimental estimations of the low-energy (1.5–10 meV) complex dielectric
constants spectrum and its temperature variation have been investigated for La 0.7 Ca 0.3 …

Jahn-Teller Phonon Anomaly and Dynamic Phase Fluctuations in

J Zhang, P Dai, JA Fernandez-Baca, EW Plummer… - Physical Review Letters, 2001 - APS
Inelastic neutron scattering was used to study the temperature (T) dependence of the lattice
excitations in La 0.7 Ca 0.3 MnO 3. An optical Jahn-Teller phonon exhibits continuous but …

Lattice relaxation and charge-transfer optical transitions due to self-trapped holes in nonstoichiometric LaMnO3 crystal

NN Kovaleva, JL Gavartin, AL Shluger, AV Boris… - Journal of Experimental …, 2002 - Springer
We explore the role of electronic and ionic polarization energies in the physics of “colossal”
magnetoresistive (CMR) materials. We use the Mott-Littleton approach to evaluate …

Optical properties of a single crystal

HJ Lee, JH Jung, YS Lee, JS Ahn, TW Noh, KH Kim… - Physical Review B, 1999 - APS
We investigated temperature-dependent optical conductivity spectra of a Nd 0.7 Sr 0.3 MnO
3 single crystal. We found that polishing and surface scattering effects on the Nd 0.7 Sr 0.3 …

Incoherent-to-coherent crossover of optical spectra in Temperature-dependent reflectivity spectra measured on cleaved surfaces

K Takenaka, Y Sawaki, S Sugai - Physical Review B, 1999 - APS
Optical reflectivity spectra were measured on cleaved surfaces of La 0.825 Sr 0.175 MnO 3
single crystals (TC= 283 K) over a temperature range 10–295 K. The optical conductivity σ …

Non-adiabatic small polaron hopping in the n= 3 Ruddlesden–Popper compound Ca4Mn3O10

J Lago, PD Battle, MJ Rosseinsky… - Journal of Physics …, 2003 - iopscience.iop.org
Non-adiabatic small polaron hopping in the n = 3 Ruddlesden–Popper compound Ca4Mn3O10
Page 1 Journal of Physics: Condensed Matter Non-adiabatic small polaron hopping in the n …