Journal
APPLIED PHYSICS EXPRESS
Volume 11, Issue 10, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.7567/APEX.11.107301
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Funding
- National Key RAMP
- D Program of China [2017YFA0303702, 2017YFA0305100]
- National Natural Science Foundation of China [51702152, 51732006, 11625418, 11474158, 51472114, 51721001]
- Key Research and Development Project of the Ministry of Science and Technology [2016YFB0700301]
- Natural Science Foundation of Jiangsu Province [BK20140019]
- Priority Academic Program Development of Jiangsu Higher Education (PAPD)
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In this letter, we present an elastic slow-wave waveguide, which utilizes and transports valley pseudospins in a two-dimensional plate phononic crystal (PnC). Both straight and bent waveguides are made for demonstrating the backscattering suppression of elastic edge-state transport due to valley-dependent pseudospins. By band structure engineering, elastic waves in a plate waveguide can be transported at ultralow velocities with considerable robustness, which is very promising for the generation of new solid-state phononic circuits with great versatility. (C) 2018 The Japan Society of Applied Physics
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