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| Main Author: | |
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| Format: | Preprint |
| Published: |
2023
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2310.14405 |
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| _version_ | 1866910325317566464 |
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| author | Hu, Jiaming |
| author_facet | Hu, Jiaming |
| contents | The quasiparticle method, which has achieved a great success in solid state electronics and crystal lattice vibration, is adopted to study the solid state ion transport. A general recipe is put forward to map the classical solid state ion system together with the short-range ion-ion repulsion to a quasiparticle quantum system based on which simple tight-binding models are set up to study popular solid state ionic issues. The derived ionic eigen-states and transport can naturally incorporate the concerted behavior. The influence of mobile ion doping to ionic conductivity is investigated by an explicit mean-field expression of ion-ion Coulomb interaction to reveal the mechanism of super-ionic conduction. Similar trick is also applied to study the the Onsager transport originated from ion-electron interference. The so called high-entropy mechanism is also explored where the lattice random distorsion and multi-site percolation exhibit positive influence to increase ionic conductivity. Our method is expected to provide a novel framework to understand and study the solid state ion transport. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2310_14405 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | A Novel Quasiparticle Method for Solid State Ion Transport Hu, Jiaming Materials Science Statistical Mechanics Quantum Physics The quasiparticle method, which has achieved a great success in solid state electronics and crystal lattice vibration, is adopted to study the solid state ion transport. A general recipe is put forward to map the classical solid state ion system together with the short-range ion-ion repulsion to a quasiparticle quantum system based on which simple tight-binding models are set up to study popular solid state ionic issues. The derived ionic eigen-states and transport can naturally incorporate the concerted behavior. The influence of mobile ion doping to ionic conductivity is investigated by an explicit mean-field expression of ion-ion Coulomb interaction to reveal the mechanism of super-ionic conduction. Similar trick is also applied to study the the Onsager transport originated from ion-electron interference. The so called high-entropy mechanism is also explored where the lattice random distorsion and multi-site percolation exhibit positive influence to increase ionic conductivity. Our method is expected to provide a novel framework to understand and study the solid state ion transport. |
| title | A Novel Quasiparticle Method for Solid State Ion Transport |
| topic | Materials Science Statistical Mechanics Quantum Physics |
| url | https://arxiv.org/abs/2310.14405 |