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7 papers · 2 filters
Photoluminescence-driven Broadband Transmitting Directional Optical Nanoantennas
Kel-Meng See, Fan-Cheng Lin, Tzu-Yu Chen +4
Optical nanoantennas mediate near and far optical fields. Operating a directional nanoantenna in transmitting mode is challenging as the antenna needs to be driven by a nanosized o…
Scaling of the chiral magnetic effect in quantum diffusive Weyl semimetals
Yen-Ting Lin, Liang-Jun Zhai, Chung-Yu Mou
We investigate the effect of short-range spin-independent disorder on the chiral magnetic effect (CME) in Weyl semimetals. Based on a minimum two-band model, the disorder effect is…
Quantum-spin-Hall insulator with a large gap: single-layer 1T' WSe
P. Chen, W. -W. Pai, Y. -H. Chan +6
Two-dimensional (2D) topological insulators (TIs) are promising platforms for low-dissipation spintronic devices based on the quantum spin Hall (QSH) effect, but experimental reali…
Observation of exciton redshift-blueshift crossover in monolayer WS2
Edbert J. Sie, Alexander Steinhoff, Christopher Gies +10
We report a rare atom-like interaction between excitons in monolayer WS2, measured using ultrafast absorption spectroscopy. At increasing excitation density, the exciton resonance…
Electrical valley filtering in transition metal dichalcogenides
Tzu-Chi Hsieh, Mei-Yin Chou, Yu-Shu Wu
This work investigates the feasibility of electrical valley filtering for holes in transition metal dichalcogenides. We look specifically into the scheme that utilizes a potential…
Multiple Weyl and Double-Weyl Points in an Elastic Chiral Lattice
Yao-Ting Wang
We show that Multiple Weyl and double Weyl points arise in a chiral elastic system through stacking many two-dimensional honeycomb mechanical structures. On the distinct kz plane,…