Probing the lattice anharmonicity of superconducting YBa2Cu3O7−δ via phonon harmonics
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DOI: 10.1103/physrevb.100.184302
Abstract: This project has received funding from the European Research Council (ERC) under the European Union’s Horizon 2020 research and innovation programme (Grant agreement No. 758461 and was supported by Spanish MINECO (Severo Ochoa Grants No.… read more here.
Keywords: probing lattice; anharmonicity superconducting; harmonics; yba2cu3o7 via ... See more keywords
Observation of strong higher-order lattice anharmonicity in Raman and infrared spectra
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DOI: 10.1103/physrevb.101.161202
Abstract: It has been well-known that Raman and infrared linewidths are associated with third-order lattice anharmonicity. Here, the authors go further and establish by means of first-principles calculations and Raman measurements that the previously neglected fourth-order… read more here.
Keywords: lattice anharmonicity; order; order lattice; anharmonicity ... See more keywords
Investigation of lattice anharmonicity in thermoelectric LaOBiS2–x Se x through Grüneisen parameter
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DOI: 10.35848/1882-0786/ac06b0
Abstract: The Se substitution effect on Grüneisen parameter (γ G) of thermoelectric layered compound LaOBiS2–x Se x , whose highest dimensionless figure-of-merit is 0.36 at 650 K, was investigated. From the estimated volume thermal expansion coefficient,… read more here.
Keywords: lattice anharmonicity; neisen parameter; investigation lattice; anharmonicity thermoelectric ... See more keywords