387 citations · 533 across the 7 of their papers we have counts for
7 papers
Dimensional crossover and symmetry transformation of the charge density waves in VSe2
P. Chen, Y. -H. Chan, R. -Y. Liu +5
Collective phenomena in solids can be sensitive to the dimensionality of the system; a case of special interest is VSe2, which shows a (r7 x r3) charge density wave (CDW) in the si…
Plaquette valence bond state in spin-1/2 J1-J2 XY model on square lattice
Y. -H. Chan, Hong-Chen Jiang, Y. -C. Chen
We studied the ground state phase diagram of spin-1/2 J1-J2 XY model on the square lattice with first- J1 and second-neighbor J2 antiferromagnetic interactions using both iDMRG and…
Symmetry-enforced band crossings in trigonal materials: Accordion states and Weyl nodal lines
Y. -H. Chan, Berkay Kilic, Moritz M. Hirschmann +4
Nonsymmoprhic symmetries, such as screw rotations or glide reflections, can enforce band crossings within high-symmetry lines or planes of the Brillouin zone. When these band degen…
Quantized Berry Phase and Surface States under Reflection Symmetry or Space-Time Inversion Symmetry
C. -K. Chiu, Y. -H. Chan, A. P. Schnyder
As reflection symmetry or space-time inversion symmetry is preserved, with a non-contractible integral loop respecting the symmetry in the Brilliouin zone, Berry phase is quantized…
Strain Engineering a Charge Density Wave Phase in Transition Metal Dichalcogenide 1T-VSe
Duming Zhang, Jeonghoon Ha, Hongwoo Baek +10
We report a rectangular charge density wave (CDW) phase in strained 1T-VSe thin films synthesized by molecular beam epitaxy on c-sapphire substrates. The observed CDW structure…
Topological semi-metals with line nodes and drumhead surface states
Y. -H. Chan, Ching-Kai Chiu, M. Y. Chou +1
In an ordinary three-dimensional metal the Fermi surface forms a two-dimensional closed sheet separating the filled from the empty states. Topological semimetals, on the other hand…
Multiple signatures of topological transitions for interacting fermions in chain lattices
Y. -H. Chan, Ching-Kai Chiu, Kuei Sun
We study one-component fermions in chain lattices with proximity-induced superconducting gap and interparticle short-range interaction, capable of hosting Majorana fermions. By sys…