3 papers
cond-mat.str-el2026
Entwined lattice of atoms and anionic electrons in layered electride LaCl
Songyuan Geng, Xin Wang, Jianqi Zhong +14
Controlling the lattice geometry that governs electronic structure is a central theme in condensed-matter physics, yet in crystalline solids this geometry is usually fixed by the a…
cond-mat.mtrl-sci2026
Bi-S network origin of cation-disorder stability and dispersive band edges in AgBiS2
Han-Pu Liang, Songyuan Geng, Heng Kang +9
Cation-disordered AgBiS2 is a promising lead-free optoelectronic material, but both its ordered structure and the microscopic origin of its favorable electronic properties remain d…
cond-mat.str-el2025
Experimental realization of dice-lattice flat band at the Fermi level in layered electride YCl
Songyuan Geng, Xin Wang, Risi Guo +15
Flat electronic bands, where interactions among electrons overwhelm their kinetic energies, hold the promise for exotic correlation physics. The dice lattice has long been theorize…