7 citations · 38 across the 21 of their papers we have counts for
22 papers
Efficient contextual partial monitoring with general function approximation
Kapilan Balagopalan, Hao Qin, Kwang-Sung Jun +1
We study finite stochastic partial monitoring (PM) games with side information, a paradigm of sequential learning with partial feedback. On each round , both player and…
Vacancy-Driven Electronic Reconstruction in Monolayer PtSe: Formation Thermodynamics and Charge States
Xiwen Gai, Jingang Wang, Tianxing Ma
Layered transition metal dichalcogenides are an important platform for two-dimensional materials, where the inevitable intrinsic defects provide new degrees of freedom for tuning t…
Inducing metal-insulator transition via disorder in correlated kagome systems
Qingzhuo Duan, Hongdao Zhuge, Zixuan JIa +1
The metal-insulator transition is often accompanied by fascinating quantum phenomena, including superconducting domes, antiferromagnetic phase transitions, and quantum spin liquids…
Polaron-mediated metal-insulator transition and proton conduction in hydrogenated nickelate perovskites
Hang Ma, Tianxing Ma, Ying Liang
Nickel-based perovskites, owing to their spontaneous hydrogen uptake and the dramatic increase in resistivity upon hydrogenation, have emerged as promising candidates for proton-co…
Tuning superconducting pairing symmetry via a staggered potential in the doped honeycomb Hubbard model
Yanmei Cai, Yicheng Xiong, Ying Liang +1
The ability to control superconducting pairing symmetry is crucial for designing unconventional and topological superconductors, yet practical tuning parameters beyond chemical dop…
Role of small-radius and high-electronegativity A-Site dopants in enhancing proton transport and stability of perovskite electrolytes
Hang Ma, Ying Liang, Tianxing Ma
The practical application of BaCeO-based electrolytes is limited by their poor chemical stability in proton-conducting solid oxide fuel cells. Commonly employed B-site doping s…
Stripe-Ordered Altermagnetism Emerging from Correlation-Driven Spin-Density-Wave Instability
Zenghui Fan, Jingyao Meng, Tianxing Ma
Altermagnetism is conventionally identified within the paradigm of collinear antiferromagnets. Its potential realization within other spin instabilities, such as a spin-density wav…
Lattice-Distortion-Mediated Proton Pairing and Trapping in Solid State Oxides
Hang Ma, Jiajun Linghu, Nannan Han +4
Experiments have evidenced proton pairing in Y-doped BaZrO3. However, the nature of proton pairing and its impact on conduction remain insufficiently understood theoretically. Here…
Charge stripe and superconductivity tuned by interlayer interaction in a sign-problem-free bilayer extended Hubbard model
Runyu Ma, Zenghui Fan, Hongxin Liu +2
Competing orders represent a central challenge in understanding strongly correlated systems. In this work, we employ projector quantum Monte Carlo simulations to study a sign-probl…
Time-reversal symmetry breaking superconductivity in the presence of loop-current fluctuations
Zenghui Fan, Runyu Ma, Stefano Chesi +2
Loop currents have been proposed in various superconductors and recently confirmed in kagome materials, raising a fundamental question regarding their intrinsic connection to super…
Interplay of magnetic and thermodynamic responses in the kagome-triangular system
Zixuan Jia, Lufeng Zhang, Qingzhuo Duan +5
Inspired by the recent experimental progress in pyrochlore derivative RESbAO (A = Mg, Zn), we investigate the Hubbard model on the kagome lattice with an additio…
In-depth Investigation of Conduction Mechanism on Defect-induced Proton-conducting Electrolytes BaHfO
Peng Feng, Hang Ma, Kuan Yang +5
This study utilizes first-principles computational methods to comprehensively analyze the impact of A-site doping on the proton conduction properties of BaHfO. The goal is to o…
Breathing-Driven Metal-Insulator Transition in Correlated Kagome Systems
Qingzhuo Duan, Zixuan Jia, Zenghui Fan +4
Inspired by the recent discovery of breathing kagome materials \(\rm Nb_3Cl_8\) and \(\rm Nb_3TeCl_7\), we have explored the influence of the breathing effect on the Hubbard model…
Dual role of stripe phase on superconducting correlation in a bilayer square lattice
Ting Guo, Lufeng Zhang, Tianxing Ma +1
While the stripe phase has been observed not only in monolayer cuprates but also in bilayer cuprates, research on its behavior in bilayer cuprates has been limited. Using constrain…
Hydrogen Bond Strength Dictates the Rate-Limiting Steps of Diffusion in Proton-Conducting Perovskites:A Critical Length Perspective
Hang Ma, Jiajun Linghu, Nannan Han +6
Identifying the rate-limiting step of proton migration in proton-conducting oxides is essential for assessing and regulating proton conductivity. Proton migration based on the Grot…
Competition between -wave and +-wave superconductivity in the Hubbard model on a checkerboard lattice
Yue Pan, Runyu Ma, Chao Chen +2
By employing determinant quantum Monte Carlo simulations, we investigate a checkerboard lattice with next-nearest-neighbor hopping as the frustration-control parameter, which…
Disorder-dependent superconducting pairing symmetry in doped graphene
Kaiyi Guo, Yue Zhang, Ying Liang +1
Disorder and doping have profound effects on the intrinsic physical mechanisms of superconductivity. In this paper, we employed the determinant quantum Monte Carlo method to invest…
Parameters dependent superconducting transition temperature in high temperature superconductors
Runyu Ma, Tianxing Ma, Congjun Wu
Understanding the evolution of the superconducting transition temperature in relation to doping and interaction strengths is one of the most challenging problems in high temperatur…
Supersolid Phase in the Diluted Holstein Model
Jingyao Meng, Yuxi Zhang, Rafael M. Fernandes +2
The Holstein model on a square lattice at half-filling has a well-established finite temperature phase transition to an insulating state with long range charge density wave (CDW) o…
Comparison of superconducting pairing in doped cuprates and nickelates within an extended Hubbard model
Yicheng Xiong, Hang Ma, Hongxing Liu +2
Within a Hubbard model, we investigate the superconducting pairing behavior of infinite-layer nickelate and cuprate superconductors by using the determinant quan…
Magnetic fluctuation and dominant superconducting pairing symmetry near the tunable Van Hove singularity
Xiaohan Kong, Boyang Wen, Kaiyi Guo +2
We have investigated the magnetism and pairing correlations of the triangular lattice based on the Hubbard model using the determinant quantum Monte Carlo method and the constraine…
Flat bands and superconductivity induced by periodic strain in monolayer graphene
Jingyao Meng, Runyu Ma, Tianxing Ma +1
Superconductivity in single-layer graphene has attracted considerable interest. Here, using the determinant quantum Monte Carlo method, we study transitions of superconductivity an…