Tootfinder

Emergent impervious band crossing in the bulk in topological nodal line semimetal ZrAs$_2$
A. S. Wadge, K. Zberecki, B. J. Kowalski, D. Jastrzebski, P. K. Tanwar, P. Iwanowski, R. Diduszko, A. Moosarikandy, M. Rosmus, N. Olszowska, A. Wisniewski
https://arxiv.org/abs/2403.04434

Emergent impervious band crossing in the bulk in topological nodal line semimetal ZrAs$_2$
Topological nodal line semimetals (TSMs) represent a unique class of materials with intriguing electronic structures and rich of symmetries, hosting electronic states with non-trivial topological properties. Among these, ZrAs$_2$ stands out, characterized by its nodal lines forming continuous loops in momentum space, governed by non-symmorphic symmetries. This study integrates angle-resolved photoemission spectroscopy (ARPES) with density functional theory (DFT) calculations to explore the elec…

Autonomous frequency locking for zero-offset microcomb
Ming Li, Feng-Yan Yang, Juanjuan Lu, Guang-Can Guo, Chang-Ling Zou
https://arxiv.org/abs/2403.02868 …

Autonomous frequency locking for zero-offset microcomb
The stabilization of optical frequency comb conventionally relies on active electronic feedback loops and stable frequency references. Here, we propose a new approach for autonomous frequency locking (AFL) to generate a zero-offset frequency comb based on cooperative nonlinear optical processes in a microcavity. In a simplified few-mode system, AFL enables the concept of fractional harmonic generation as a zero-offset multi-laser reference for measuring the carrier envelope offset frequency ($f…

This https://arxiv.org/abs/2310.16886 has been replaced.
initial toot: https://mastoxiv.page/@a…

Photo-induced electronic and spin topological phase transitions in monolayer bismuth
Ultrathin bismuth exhibits rich physics including strong spin-orbit coupling, ferroelectricity, nontrivial topology, and light-induced structural dynamics. We use \textit{ab initio} calculations to show that light can induce structural transitions to four transient phases in bismuth monolayers. These light-induced phases exhibit nontrivial topological character, which we illustrate using the recently introduced concept of spin bands and spin-resolved Wilson loops. Specifically, we find that the…