Interpretation of high ionic conduction in superionic conductors based on electronic and phonon properties

Wakamura, Kunio

doi:10.1016/j.ssi.2003.07.004

Cited by 13 publications

(22 citation statements)

References 41 publications

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“…The height of this peak could be further suppressed by choosing multiple fillers with different local vibrational frequencies [38e40]. The abnormal temperature dependence of k L in Cu 2-d Se indicates that it may possess the similar "resonant" modes at low-energy phonon branches with opticlike q-dependence and short lifetime of phonons [41].…”

Section: Methodsmentioning

confidence: 99%

Reduction of thermal conductivity by low energy multi-Einstein optic modes

Liu

Yang

Shi

et al. 2016

Journal of Materiomics

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The lattice dynamics and thermal transport in Cu 2-d Se compounds were investigated via theoretical calculations, neutron measurement, and characterization of thermal properties. The results show that binary ordered Cu 2-d Se has an extremely low lattice thermal conductivity at low temperatures. The low energy multi-Einstein optic modes are the dominant approach obtaining such an extremely low lattice thermal conductivity. It is indicated that the damped vibrations of copper ions could contribute to the low energy multi-Einstein optic modes, especially for those low energy branches at 2e4 meV.

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Section: Methodsmentioning

confidence: 99%

Reduction of thermal conductivity by low energy multi-Einstein optic modes

Liu

Yang

Shi

et al. 2016

Journal of Materiomics

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“…For those conductors, significant relations of the vibration modes and of the electronic energy state near the band gap on conduction ion have been discussed by several researchers [8][9][10][11][12][13][14][15][16][17][18][19][20][21][22]. For SICs, Brüesch et al considered the coupling of shear-type vibration mode with movable ion [8].…”

Section: Introductionmentioning

confidence: 99%

Ion conduction in proton- and related defect (super) ionic conductors: Mechanical, electronic and structure parameters

Wakamura

2009

Solid State Ionics

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“…This property has been recognized as the low energy excitations in the field of superionic conductors [28][29][30][31]. The flat phonon band implies that many phonon modes have almost the same energy.…”

Section: Discussionmentioning

confidence: 99%