Fig. 2: Atomic vibration analysis for the relaxation time in BiCuSeO and BiAgSeO. | npj Computational Materials

Fig. 2: Atomic vibration analysis for the relaxation time in BiCuSeO and BiAgSeO.

From: Local symmetry distortion induced anomalous thermal conduction in thermoelectric layered oxyselenides

Fig. 2

a Third-order interatomic force constants (IFCs) of the representative interactions in BiCuSeO (left panel) and BiAgSeO (right panel). b Normalized phase space for phonon scattering channels. a and o stand for the acoustic and optical phonons, respectively. c Phonon density of state (DOS) of Cu and Ag along the a- (left panel) and c-axes (right panel). d Mean square displacement of Cu and Ag along the a- and c-axes.

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