7 papers
Polar nanoregions and reentrant-like ferroelectric behavior in SrTiO
Yuan-Jie Sun, Fei Yang, Long-Qing Chen
Recent real-space imaging in quantum paraelectric SrTiO [Nature 656, 54 (2026)] reveals that local polar textures do not continuously grow upon cooling, but reach a maximum int…
Soft-Phonon-Driven Effective Inversion-Symmetry Crossover in Quantum Paraelectrics
Xiaojiang Li, Guodong Zhao, Fei Yang +6
Symmetry lays the foundation of condensed matter physics and its experimental manifestation provides fundamental insight into the collective behaviors of quantum materials. Optical…
Hidden Crossover and Relaxor-Like Response from Emerging Polar Skyrmion Correlations in Ferroelectric Superlattices
Zhiyang Wang, Fei Yang, Long-Qing Chen
Polar skyrmions in ferroelectric superlattices are nanoscale topological polarization textures typically regarded as weakly coupled objects confined to individual layers, with a ro…
A composite electron-lattice order: electronic nematicity of 2DEG and polarization density waves at a near-ferroelectric interface
Fei Yang, Zhi-Yang Wang, Long-Qing Chen
We consider a two-dimensional electron gas (2DEG) formed at a near-ferroelectric interface and strongly coupled to polar phonons. Through a self-consistent microscopic many-body ca…
Emergent spin-resolved electronic density waves from strong -wave altermagnetism and pseudogap phenomena from phason fluctuations
Fei Yang, Guo-Dong Zhao, Binghai Yan +1
Metallic -wave altermagnets provide a unique setting in which strong spin-momentum locking can qualitatively reshape electronic instabilities. Here we develop a self-consistent…
A Self-Consistent Computational Framework for Displacive Ferroelectrics from the Condensed Ground State
F. Yang, L. Q. Chen
Quantitative description of finite-temperature properties of displacive ferroelectrics, and in particular the critical behavior, is of fundamental importance to both theory and dev…
Quantum phase-field model: vortices and THz-induced gap dynamics in superconductors
R. Y. Fang, F. Yang, S. L. Zhang +1
The ability to simulate the spatial and temporal ordering dynamics of quantum phases in inhomogeneous systems, particularly in the low-temperature regime, is crucial for understand…