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Abstract:
We report on the transport properties of the superhoneycomb lattice, the band structure of which possesses a flat band and Dirac cones, according to the tight-binding approximation. The super-honeycomb model combines the honeycomb lattice and the Lieb lattice and displays the properties of both. It also represents a hybrid fermionic and bosonic system, which is rarely seen in nature. By choosing the phases of input beams properly, the flat-band mode of the super-honeycomb lattice will be excited and the input beams will exhibit strong localization during propagation. On the other hand, if the modes of Dirac cones of the super-honeycomb lattice are excited, one will observe conical diffraction. Furthermore, if the input beam is properly chosen to excite a sublattice of the super-honeycomb lattice and the modes of Dirac cones with different pseudospins, e.g., by the three-beam interference pattern, the pseudospin-mediated vortices will be observed.
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Source :
ANNALEN DER PHYSIK
ISSN: 0003-3804
Year: 2017
Issue: 3
Volume: 529
2 . 5 5 7
JCR@2017
3 . 3 1 7
JCR@2019
ESI Discipline: PHYSICS;
ESI HC Threshold:120
JCR Journal Grade:2
CAS Journal Grade:2
Cited Count:
WoS CC Cited Count: 26
SCOPUS Cited Count: 38
ESI Highly Cited Papers on the List: 0 Unfold All
WanFang Cited Count:
Chinese Cited Count:
30 Days PV: 11