6 papers
Mirror-Symmetry-Enforced Photonic Altermagnet
Chong Cao, Xiong-Xiong Xue, Yee Sin Ang +1
Altermagnets host momentum-dependent spin splitting without net magnetization, a symmetry-enforced band phenomenon whose photonic analogues have so far been realized only in square…
Supermoiré Chern mosaic in helical trilayer WSe2
Zhenyu Wang, Mingjie Zhang, Hai Meng +19
Helically twisted multilayers offer access to moiré physics beyond the single-superlattice paradigm, yet their correlated and topological transport properties remain largely unexp…
Chips in the Flatland : 2D Semiconductors for Future Computing Electronic
Narin Trakarnvanich, Mitra Sanchali, Tong Su +6
As transistor scaling approaches its fundamental physical limits in the Angstrom era, two-dimensional (2D) semiconductors have emerged as the promising channel material candidates…
Tunable high- Janus-to-chiral bound states in the continuum in bilayer PhCs
Zhexing Dong, Shengxuan Xia, Yee Sin Ang +1
We propose a bilayer all-dielectric PhC for controlling Janus bound states in the continuum (BIC) and optical chirality through symmetry-selective perturbations. Starting from a sy…
Ferroelectric Band Twinning from Pair-State Symmetry
Shibo Fang, Jianhua Wang, Zhenzhou Guo +8
Ferroelectric switching provides a nonvolatile way to control electronic structures, but a general symmetry rule connecting the full Bloch bands of two switchable polarization stat…
Generalized Brillouin Zone Fragmentation
Haiyu Meng, Yee Sin Ang, Ching Hua Lee
The Generalized Brillouin Zone (GBZ) encodes how lattice momentum is complex-deformed due to non-Hermitian skin accumulation, and has proved essential in restoring bulk-boundary co…