Category Ranking
98%
Total Visits
921
Avg Visit Duration
2 minutes
Citations
20
Article Abstract
The quantum anomalous Hall effect (QAHE) holds significant fundamental and technological importance in low-dissipation spintronics. We employ a tight-binding model and first-principles calculations to illustrate that Floquet engineering offers a fertile playground to realize high-Chern-number QAHE in two-dimensional (2D) antiferromagnets. Via tuning of light frequency, we put forward an abundant topological phase map, i.e., topological phase transitions from trivial phase to QAHE, and that between QAHE with tunable high Chern numbers of = ±3 and = ±4. Analysis of edge states further confirms the topologically nontrivial natures, where three or four chiral edge states are clearly visible within the global band gaps. Moreover, we identify intrinsic KMnBi quintuple layers as the experimentally feasible example of the proposed mechanism of Floquet-engineered QAHE with high and tunable Chern numbers, bridging the QAHE, Floquet engineering, and 2D antiferromagnets with a strong likelihood of inventive applications in low-dissipation antiferromagnetic spintronics.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1021/acs.nanolett.4c05226 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Probing the Kitaev honeycomb model on a neutral-atom quantum computer.
Nature
September 2025
Department of Physics, Harvard University, Cambridge, MA, USA.
Quantum simulations of many-body systems are among the most promising applications of quantum computers. In particular, models based on strongly correlated fermions are central to our understanding of quantum chemistry and materials problems, and can lead to exotic, topological phases of matter. However, owing to the non-local nature of fermions, such models are challenging to simulate with qubit devices.
View Article and Find Full Text PDFSpecimen extraction techniques utilized in minimally invasive surgery for uterine cancer and an enlarged uterus: a quality assurance study.
J Robot Surg
September 2025
Department of Gynecologic Oncology, Moffitt Cancer Center, 12902 USF Magnolia Drive, Tampa, FL, 33612, USA.
This study was conducted to investigate the techniques and complications of enlarged uterine extraction during minimally invasive surgery for uterine malignancy. The electronic medical record was queried for patients with uterine malignancy and enlarged uterus (≥ 250 g) who underwent primary hysterectomy with laparoscopic or robotic approach. Statistical analysis was performed using Fisher's exact test for categorical variables and Kruskal-Wallis test for continuous variables.
View Article and Find Full Text PDFTowards Floquet Chern insulators of light.
Nat Nanotechnol
September 2025
Department of Physics and Astronomy, University of Pennsylvania, Philadelphia, PA, USA.
Topological photonics explores photonic systems that exhibit robustness against defects and disorder, enabled by protection from underlying topological phases. These phases are typically realized in linear optical systems and characterized by their intrinsic photonic band structures. Here we experimentally study Floquet Chern insulators in periodically driven nonlinear photonic crystals, where the topological phase is controlled by the polarization and the frequency of the driving field.
View Article and Find Full Text PDFDesigning Hall crystals with variable Chern numbers.
Nat Commun
August 2025
Department of Physics, Massachusetts Institute of Technology, Cambridge, MA, USA.
Topological electronic crystals are electron crystals in which spontaneously broken translation symmetry coexists with or gives rise to a nontrivial topological response. Here, we introduce a novel platform and analytical theory for realizing interaction-induced Hall crystals, a class of topological electronic crystals, with various Chern numbers C. The platform consists of a two-dimensional semiconductor subjected to an out-of-plane magnetic field and one-dimensional modulation, which can be realized by moiré or dielectric engineering.
View Article and Find Full Text PDFAnomalous topological pumping in hyperbolic lattices.
Sci Bull (Beijing)
August 2025
Key Laboratory of Advanced Optoelectronic Quantum Architecture and Measurements of Ministry of Education, Beijing Institute of Technology, Beijing 100081, China; Beijing Key Laboratory of Nanophotonics & Ultrafine Optoelectronic Systems, School of Physics, Beijing Institute of Technology, Beijing 10
Hyperbolic lattices-non-Euclidean regular tilings with constant negative curvature-provide a unique framework to explore curvature-driven topological phenomena inaccessible in flat geometries. While recent advances have focused on static hyperbolic systems, the dynamical interplay between curved space and time-modulated topology remains uncharted. Here, we study the topological pumping in hyperbolic lattices, discovering anomalous phenomena with no Euclidean analogs.
View Article and Find Full Text PDF