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10 papers · 1 filter
Effect of phonon anharmonicity on ferroelectricity in EuxBa1-xTiO3
Bommareddy Poojitha, Km Rubi, Soumya Sarkar +3
Investigating the competition between ferroelectric ordering and quantum fluctuations is essential to tailor the desired functionalities of mixed ferroelectric and incipient ferroe…
Interfacial thermal transport in atomic junctions
Lifa Zhang, Pawel Keblinski, Jian-Sheng Wang +1
We study ballistic interfacial thermal transport across atomic junctions. Exact expressions for phonon transmission coefficients are derived for thermal transport in one-junction a…
The phonon Hall effect: theory and application
Lifa Zhang, Jie Ren, Jian-Sheng Wang +1
We present a systematic theory of the phonon Hall effect in a ballistic crystal lattice system, and apply it on the kagome lattice which is ubiquitous in various real materials. By…
Topological Nature of the Phonon Hall Effect
Lifa Zhang, Jie Ren, Jian-Sheng Wang +1
We provide a topological understanding on phonon Hall effect in dielectrics with Raman spinphonon coupling. A general expression for phonon Hall conductivity is obtained in terms o…
Elastic and non-linear stiffness of graphene: a simple approach
Jin-Wu Jiang, Jian-Sheng Wang, Baowen Li
The recent experiment [Science \textbf{321}, 385 (2008)] on the Young's modulus and third-order elastic stiffness of graphene are well explained in a very simple approach, where th…
Edge states induce boundary temperature jump in molecular dynamics simulation of heat conduction
Jin-Wu Jiang, Jie Chen, Jian-Sheng Wang +1
We point out that the origin of the commonly occurred boundary temperature jump in the application of Nośe-Hoover heat bath in molecular dynamics is related to the edge modes, whic…