A vibronic coupling approach for the interpretation of the g-value temperature dependence in type-I copper proteins

1987 ◽  
Vol 83 (12) ◽  
pp. 3693 ◽  
Author(s):  
Mauro Bacci ◽  
Salvatore Cannistraro
Keyword(s):  
Temperature Dependence ◽  
Vibronic Coupling ◽  
Type I ◽  
Copper Proteins ◽  
Coupling Approach ◽  
G Value

Temperature Dependence of the Intervalley Deformation Potential of GaAs/AlAs Superlattices Under Hydrostatic Pressure

1997 ◽  
Vol 499 ◽  
Author(s):  
S. Guha ◽  
Q. Cai ◽  
M. Chandrasekhar ◽  
H. R. Chandrasekhar ◽  
Hyunjung Kim ◽  
...  
Keyword(s):  
Hydrostatic Pressure ◽  
Temperature Dependence ◽  
Pressure Dependence ◽  
Type I ◽  
Type Ii ◽  
Deformation Potential ◽  
Intervalley Scattering

ABSTRACTWe have studied the pressure dependence of the type-I and type-II transitions in (GaAs)m/(AlAs)m superlattices by photoluminescence (PL) spectroscopy. From the study of PL linewidths of the type-I exciton as a function of pressure and temperature, we determine the intervalley deformation potential. Beyond the type-I and type-II crossover, the PL linewidth increases both as a function of pressure and temperature. We find that the electron-phonon deformation potential for Γ-X intervalley scattering varies with temperature.

scholarly journals Analysis of the S2←S0 vibronic spectrum of the ortho-cyanophenol dimer using a multimode vibronic coupling approach

2015 ◽  
Vol 142 (8) ◽  
pp. 084308 ◽  
Author(s):  
Sabine Kopec ◽  
Philipp Ottiger ◽  
Samuel Leutwyler ◽  
Horst Köppel
Keyword(s):  
Vibronic Coupling ◽  
Vibronic Spectrum ◽  
Coupling Approach

ESR STUDIES OF GMR RELATED MATERIALS I: ESR of Mn IN LaMnO3 AND La0.99Ca0.01MnO3

2000 ◽  
Vol 14 (25n26) ◽  
pp. 883-897 ◽  
Author(s):  
N. ARAI ◽  
K. SUGAWARA
Keyword(s):  
Magnetic Susceptibility ◽  
Temperature Dependence ◽  
Spin System ◽  
High Field ◽  
Energy Gap ◽  
Low Field ◽  
High Field Esr ◽  
Clear Signal ◽  
Spin Clusters ◽  
G Value

ESR measurements are carried out for La 1-x Ca x MnO 3 (x=0, 0.01) from 760 K down to 4 K. A clear signal was observed above 260 K, presumably arising from Mn 3+ and Mn 4+, but two kinds of signals, the low-field and high-field ESR with g≃2, were observed below it. The high- and low-field signals are tentatively assumed to originate from Mn 4+ and Mn 3+, respectively. The g-value, linewidth, and intensity of the high-field signal nearly follow ∝1/(T-106). The temperature dependence of g-shift of the low-field signal is similar to that of magnetic susceptibility of LaMnO 3. The ESR intensity anomalously increases at temperatures between about 150 K and 250 K, which is tentatively ascribed to the occurrence of "spin-clusters". Above ≃300 K, the ESR intensity nearly follows Curie's law, and the linewidth is proportional to exp (-500/T), an indication of some kind of energy-gap existence in the Mn spin system.

Temperature Dependence of the Ginzburg-Landau Coefficient in Type-I Superconductors

1965 ◽  
Vol 137 (6A) ◽  
pp. A1816-A1821 ◽  
Author(s):  
Arthur Paskin ◽  
Myron Strongin ◽  
Paul P. Craig ◽  
Donald G. Schweitzer
Keyword(s):  
Temperature Dependence ◽  
Type I ◽  
Ginzburg Landau

scholarly journals Temperature Dependence of Freshwater Phytoplankton Growth Rates and Zooplankton Grazing Rates

Water ◽  
2021 ◽  
Vol 13 (11) ◽  
pp. 1591
Author(s):  
Jennifer Pulsifer ◽  
Edward Laws
Keyword(s):  
Temperature Dependence ◽  
Chlorophyll A ◽  
Growth Rates ◽  
Eutrophic Lake ◽  
Phytoplankton Growth ◽  
Type I ◽  
Zooplankton Grazing ◽  
Temperature Range ◽  
Freshwater Phytoplankton ◽  
Louisiana State University

Phytoplankton growth rates and zooplankton grazing rates were estimated on 16 occasions over a period of 17 months in University Lake, a highly eutrophic lake on the campus of Louisiana State University. Phytoplankton growth rates and chlorophyll a concentrations averaged 1.0 ± 0.2 d−1 and 240 ± 120 mg m−3, respectively. Chlorophyll a concentrations were at or above the inflection point of the Holling type I curve that described the relationship between zooplankton grazing rates and chlorophyll a concentrations. In most cases, it was necessary to dilute lake water by more than a factor of 4 before zooplankton grazing rates became sensitive to chlorophyll a concentrations. Chlorophyll a concentrations were positively correlated with temperature and were roughly fourfold higher at 30 °C than at 15 °C. An analysis of the temperature dependence of the growth rates and grazing rates in this study and 87 other paired estimates of limnetic phytoplankton growth rates and zooplankton grazing rates revealed virtually identical temperature dependences of growth rates and grazing rates that were very similar to the temperature dependence predicted by the metabolic theory of ecology. Phytoplankton growth rates exceeded zooplankton grazing rates by 0.13 ± 0.05 d−1 at all temperatures over a temperature range of 8.5–31.5 °C. The Q10 for both phytoplankton growth rates and zooplankton grazing rates was 1.5 over that temperature range.

Temperature Dependence of the Crystal Structure and EPR Spectrum of Bis(1,3,5-Trihydroxycyclohexane)copper(II) Tosylate. A Unified Interpretation Using a Model of Dynamic Vibronic Coupling

1996 ◽  
Vol 35 (25) ◽  
pp. 7419-7429 ◽  
Author(s):  
Joachim Bebendorf ◽  
Hans-Beat Bürgi ◽  
Eduard Gamp ◽  
Michael A. Hitchman ◽  
Angela Murphy ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Temperature Dependence ◽  
Vibronic Coupling ◽  
Epr Spectrum

Optical Conductivity of Rattling Phonons in Type-I Clathrates Ba8Ga16Ge30 and Ba8Ga16Sn30

2012 ◽  
Vol 508 ◽  
pp. 341-346
Author(s):  
K. Iwamoto ◽  
T. Mori ◽  
S. Kushibiki ◽  
H. Honda ◽  
H. Matsumoto ◽  
...  
Keyword(s):  
Temperature Dependence ◽  
Dynamical Property ◽  
Type I ◽  
Vibrational Modes ◽  
Anomalous Temperature ◽  
Potential Approximation ◽  
Clathrate Compounds ◽  
Anharmonic Potential ◽  
Double Well Potential ◽  
Linewidth Broadening

We Review Our Dynamical Property Measurements of Rattling Phonons in Type-I Clathrate Compounds, the Quasi-on-Center Ba8Ga16Ge30 (BGG) and Off-Center Ba8Ga16Sn30 (BGS), Using a Terahertz Time-Domain Spectrometer. The Lowest-Lying Vibrational Modes of Rattling Ba Ions in the Oversized Cage Show Anomalous Temperature Dependence in their Spectra. For BGG, the Temperature Dependence Is Mostly Consistent with a Local Anharmonic Potential Approximation that Predicts Softening towards Low Temperature. On the other Hand, for BGS, a Single Broad Peak of Off-Center Rattling Phonons Splits into Two Subpeaks below 120 K, and, with Further Lowering Temperature, the Spectra Show Anomalous Broadening. While the Splitting Can Be Understood by the Double Well Potential, the Linewidth Broadening Must Be Attributed to some Relevant Interactions with such Excitations as Acoustic Phonons and Doped Carriers.

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