3 papers
cond-mat.str-el2026
Pair-Density Wave from Doping an Altermagnetic Mott Insulator
Shuai A. Chen, Qianqian Chen, Guangyu Yu +1
Pair-density-wave (PDW) superconductivity is a state in which the superconducting order parameter modulates at a finite wavevector. Using large-scale density matrix renormalization…
cond-mat.str-el2026
Composite Boson Theory of Fractional Chern Insulators
Guangyu Yu, Zheng Zhu
The understanding of fractional Chern insulators (FCIs) has been deeply guided by band topology and quantum geometry. Here, we introduce a real-space theoretical framework in which…
cond-mat.mes-hall2025
Deconfined Quantum Critical Point in Quantum Hall Bilayers
Guangyu Yu, Tao Xiang, Zheng Zhu
Deconfined quantum critical points (DQCPs) represent an unconventional class of quantum criticality beyond the Landau-Ginzburg-Wilson-Fisher paradigm. Nevertheless, both their theo…