Abstract
A mechanical diamond, with the classical mechanics of a spring-mass model arrayed on a diamond lattice, is discussed topologically. Its frequency dispersion possesses an intrinsic nodal structure in the three-dimensional Brillouin zone (BZ) protected by the chiral symmetry. Topological changes of the line nodes are demonstrated, associated with the modification of the tension. The line nodes projected into two-dimensional BZ, form loops, which are characterized by the quantized Berry phases with 0 or π. With boundaries, the edge states are discussed in relation to the Berry phases and winding numbers, and the bulk-edge correspondence of the mechanical diamond is established.
Journal
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- New journal of physics
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New journal of physics 19 (3), 35003-, 2017-03
IOP Publishing Ltd
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Details 詳細情報について
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- CRID
- 1573668927408824576
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- NII Article ID
- 120007134895
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- ISSN
- 13672630
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- Text Lang
- en
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- Data Source
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- CiNii Articles