AWhat changed
Zhang and colleagues described a model phonon Hall response using the geometry of phonon bands. In their two-dimensional lattice model, band touchings and changes of topological band numbers can occur as an effective field varies.
Scientific scope
Zhang and colleagues described a model phonon Hall response using the geometry of phonon bands. In their two-dimensional lattice model, band touchings and changes of topological band numbers can occur as an effective field varies. This is a theoretical lattice model, not a demonstration of a transition in a physical material. Its authors distinguish integer band Chern numbers from the phonon Hall conductivity, which is not generally quantized. A later transport treatment discusses energy-magnetization corrections; its authors are not authors of the 2010 paper.
Evidence
The linked original works support the scoped statement and contribution attribution. WRS has not independently replayed experiments or reconstructed a full mathematical proof. This is a theoretical lattice model, not a demonstration of a transition in a physical material. Its authors distinguish integer band Chern numbers from the phonon Hall conductivity, which is not generally quantized. A later transport treatment discusses energy-magnetization corrections; its authors are not authors of the 2010 paper.
Contributors
- The named authors in the research record · SCIENCE: These are the source-listed authors of this specific paper. Individual effort, author nationality and unresolved cross-record identities are not inferred.
- Topological Nature of Phonon Hall Effect and the Associated Phase Transition
- Topological Nature of the Phonon Hall Effect
- Berry Curvature and Phonon Hall Effect
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