Spin-orbit coupling and electron correlation effects on phonon anharmonicity of KOs2O6
AIP Advances, 2019 Spin-orbit coupling and electron correlation effects from Os 5d electrons on phonon anharmonicity of β−pyrochlore superconductor KOs2O6 are systematically studied by first-principles frozen-phonon calculations.
Wei Wang, Jiafa Sun, Junqi He
doaj +1 more source
Direct Wigner tomography of a superconducting anharmonic oscillator
, 2012 The analysis of wave-packet dynamics may be greatly simplified when viewed in phase-space. While harmonic oscillators are often used as a convenient platform to study wave-packets, arbitrary state preparation in these systems is more challenging.
David Shwa +8 more
core +1 more source
Anomalous thermal expansion in 1D transition-metal cyanides: what makes the novel trimetallic cyanide Cu1/3Ag1/3Au1/3CN behave differently? [PDF]
, 2019 The structural dynamics of a quasi-one-dimensional (1D) mixed-metal cyanide, Cu1/3Ag1/3Au1/3CN, with intriguing thermal properties is explored. All the current known related compounds with straight-chain structures, such as group 11 cyanides CuCN, AgCN ...
A. Sjölander +9 more
core +2 more sources
Light Switchable Ionic Conductivity of Arylazopyrazole Modified Polysiloxanes
Advanced Materials Technologies, EarlyView.We present a polysiloxane functionalized with a novel arylazopyrazole dye that undergoes reversible photoisomerization. Upon lithium bis(trifluoromethanesulfonyl)imide addition and UV irradiation, the polymer exhibits a shift in tan(d) toward higher frequencies and enhanced ionic conductivity.
Malte S. Beccard +7 more
wiley +1 more source
Life, 2019 The production of complex molecules in ammonia–carbon dioxide ices is presumed to pass through species of formula H3N:CO2 with further addition of ammonia and carbon dioxide.
Zikri Altun, Erdi Bleda, Carl Trindle
doaj +1 more source
Slowing down the heat in thermoelectrics
InfoMat, 2021 Heat transport has various applications in solid materials. In particular, the thermoelectric technology provides an alternative approach to traditional methods for waste heat recovery and solid‐state refrigeration by enabling direct and reversible ...
Bingchao Qin +2 more
doaj +1 more source
Strong Proton‐Phonon Coupling Drives Fast Ion Transport in Perovskites
Advanced Science, EarlyView.Experimental and computational phonon analysis of ABO3‐type proton conductor BaSnO3 shows that substitution on the B‐site with yttrium forms an imaginary phonon mode which is instrumental for the function as proton conductor. This overcompensates the adverse proton trapping effect of the yttrium.
Alexey Rulev +8 more
wiley +1 more source
Temperature-Dependent EXAFS Measurements of the Pb L3-Edge Allow Quantification of the Anharmonicity of the Lead–Halide Bond of Chlorine-Substituted Methylammonium (MA) Lead Triiodide [PDF]
, 2022 Götz Schuck +5 more
openalex +1 more source
Advanced Science, EarlyView.A multi‐technique pump‐probe setup capable of performing both transient reflectivity and time‐resolved Raman spectroscopy after ultrafast excitation, provides a comprehensive understanding of ultrafast electronic and phononic processes. Distinct decay rates for the temperature, frequency, and linewidth of the phonon mode in germanium are observed ...
Grazia Raciti +10 more
wiley +1 more source
Prediction of Thermal Transport Properties of Pristine and BN-Substituted Holey Graphynes
InorganicsThe merging of pore designs is a potential strategy for achieving ultra-low lattice thermal conductivity (κ), for which phonon anharmonicity and size effect are indispensable for discovering novel functional materials in thermal applications.
Qingchen Li +4 more
doaj +1 more source