Publications (10)
Relaxation and Its Effects on Electronic Structure in Twisted Systems: An Analytical Perspective
Junxi Yu, Bingbing Wang, Cheng-Cheng Liu
Lattice relaxation profoundly reshapes electronic structures in twisted materials. Prevailing treatments, however, typically rely on large-scale density functional theory (DFT), wh…
Pressure-Tunable Generalized Wigner Crystal and Fractional Chern Insulator in twisted MoTe
Bingbing Wang, Junxi Yu, Cheng-Cheng Liu
Due to the forming of low-energy flat bands, the moiré superlattices of the transition metal dichalcogenides are fascinating platforms for studying novel correlated states when su…
Twisted Magnetic Van der Waals Bilayers: An Ideal Platform for Altermagnetism
Yichen Liu, Junxi Yu, Cheng-Cheng Liu
We introduce a universal methodology for generating and manipulating altermagnetism in two-dimensional (2D) magnetic van der Waals (MvdW) materials through twisting. We find that a…
General Electronic Structure Calculation Method for Twisted Systems
Junxi Yu, Shifeng Qian, Cheng-Cheng Liu
In recent years, two-dimensional twisted systems have gained increasing attention. However, the calculation of electronic structures in twisted material has remained a challenge. T…
Quardratic Electromechanical Strain in Silicon Investigated by Scanning Probe Microscopy
Junxi Yu, Ehsan Nasr Esfahani, Qingfeng Zhu +4
Piezoresponse force microscopy (PFM) is a powerful tool widely used to characterize piezoelectricity and ferroelectricity at the nanoscale. However, it is necessary to distinguish…
Complete Hierarchy of Nonrelativistic Odd-Parity Spin Splitting in Collinear Magnets
Yichen Liu, Junxi Yu, Pu Zhang +1
Momentum-dependent nonrelativistic spin splitting provides a symmetry fingerprint of collinear magnets and can govern unconventional electronic, magnonic, and transport phenomena.…
Imaging graphene moiré superlattices via scanning Kelvin probe microscopy
Junxi Yu, Rajiv Giridharagopal, Yuhao Li +5
Moiré superlattices in van der Waals heterostructures are gaining increasing attention because they offer new opportunities to tailor and explore unique electronic phenomena when…
Ferroic Domains of Alternating Polar and Nonpolar Orders Regulate Photocurrent in Single Crystalline CH3NH3PbI3 Films Self-grown on FTO/TiO2 Substrate
Boyuan Huang, Guoli Kong, Ehsan Nasr Esfahani +10
Photovoltaic conversion efficiency (PCE) of halide perovskite solar cells has risen spectacularly, yet the very crystalline structure of CH3NH3PbI3 remains ambiguous after extensiv…
MoireStudio: A Universal Twisted Electronic Structure Calculation Package
Junxi Yu, Yichen Liu, Cheng-Cheng Liu
Twistronics is an emerging and captivating field in condensed matter physics and material science. However, accurately and efficiently calculating the electronic structures of twis…
Odd-Parity Magnons
Pu Zhang, Sun-Bo Xie, Junxi Yu +2
Magnons, as charge-neutral spin excitations, can transport spin information without Joule heating and therefore offer a promising platform for low-power spintronics. However, in co…