Ning-Jing Yang

Exploring topological quantum matter, symmetry-protected phases, and spin-layer interplay.

Ph.D. student in Physics
Fujian Normal University

Research Interests

Higher-order topology / Hall effects / Quantum geometry / Topological phase transitions / Topological Superconductivity / ferroelectricity and ferromagnetism / Machine learning–assisted modeling.

Higher-Order Topological Phase Transitions and Hall Effect

During my Ph.D., I focused on higher-order topological phase transitions in two-dimensional quantum materials, driven by the interplay of multiple internal degrees of freedom—including spin, layer, orbital, and valley. By combining tight-binding modeling with first-principles calculations, I revealed how spin–layer locking, interlayer ferroelectric sliding, and magnetic symmetry breaking can induce transitions between topologically distinct phases, giving rise to robust corner-localized states. I systematically explored the thermoelectric and transport signatures accompanying these transitions, including the anomalous Hall effect, the anomalous Nernst effect, and the thermal Hall effect. These Hall-type responses not only serve as effective probes of the topological phase boundaries, but also reflect the entangled nature of multiple degrees of freedom in higher-order topological states.

Publications

9. Sliding Ferroelectrics Induced Hybrid-Order Topological Phase Transitions
Physical Review Letters, 134: 256602, 2025.
Ning-Jing Yang, Jian-Min Zhang, Xiao-Ping Li, Zeying Zhang, Zhi-Ming Yu, Zhigao Huang, and Yugui Yao
  • Hybrid-order topological phase transition driven by sliding ferroelectricity in bilayer systems.
  • Asymmetric layer-resolved topological evolution enabled by inversion breaking.
  • Establishes bulk-boundary-corner correspondence in 2D magnetic van der Waals systems.
PRL Figure
8. Orbital Hall effect characterizing higher-order topological phase transitions in monolayers of ferromagnetic materials
Physical Review B, 111: 235435, 2025.
Ning-Jing Yang, Jun-Hao Li, Zhigao Huang, Jian-Min Zhang
  • Characterization of higher-order topological phase transitions using the orbital Hall effect in ferromagnetic monolayers.
  • Exploration of topological properties in two-dimensional magnetic systems.
  • Analysis of phase transition signatures in monolayer structures.
PRL Figure
7. Second-order topological insulators in Kekulé-patterned hexagonal biphenylene networks
Applied Physics Letters, 126: 033101, 2025.
Ning-Jing Yang, Hai Yang, Zhigao Huang, Jian-Min Zhang
  • Investigation of second-order topological insulators in Kekulé-patterned biphenylene networks.
  • Analysis of topological properties in hexagonal lattice structures.
  • Exploration of novel insulating phases in two-dimensional materials.
PRL Figure
6. Hybrid-order topological phase and transition in 1H transition metal compounds
Applied Physics Letters, 125: 263102, 2024.
Ning-Jing Yang, Zhigao Huang, Jian-Min Zhang
  • Study of hybrid-order topological phases in 1H transition metal compounds.
  • Characterization of phase transitions in metal-based materials.
  • Exploration of topological properties in transition metal systems.
PRL Figure
5. Higher-order topological phase diagram revealed by anomalous Nernst effect in a Janus ScClI monolayer
Physical Review B, 109: 035423, 2024.
Ning-Jing Yang, Jian-Min Zhang
  • Revelation of higher-order topological phases using the anomalous Nernst effect.
  • Analysis of phase diagrams in Janus ScClI monolayers.
  • Study of topological properties in two-dimensional materials.
4. Topological phases, local magnetic moments, and spin polarization triggered by C 558-line defects in armchair graphene nanoribbons
Physical Chemistry Chemical Physics, 26: 17075-17082, 2024.
Ning-Jing Yang, Wen-Ti Guo, Hai Yang, Zhigao Huang, Jian-Min Zhang
  • Investigation of topological phases induced by C 558-line defects in graphene nanoribbons.
  • Analysis of local magnetic moments and spin polarization effects.
  • Study of defect-driven properties in armchair graphene structures.
3. Novel magnetic topological insulator FeBi 2 Te 4 with controllable topological quantum phase
Journal of Materials Chemistry C, 11: 12307-12319, 2023.
Wen-Ti Guo, NingJing Yang, Zhigao Huang, Jian-Min Zhang
2. Interface-induced topological phase and doping-modulated bandgap of two-dimensional graphene-like networks
Chinese Physics B, 109: 035423, 2023.
NingJing Yang, Hai Yang, Guojun Jin
1. Strain-modulated electronic transport in two-dimensional carbon allotropes
AIP Advances, 12: 045102, 2022.
NingJing Yang, Qingyuan Chen, Yafang Xu, Jinlong Luo, Hai Yang, Guojun Jin