Da Wang

Reply to "Comment on 'Anisotropic Scattering Caused by Apical Oxygen Vacancies in Thin Films of Overdoped High Temperature Cuprate Superconductors'"

Da Wang, Jun-Qi Xu, Hai-Jun Zhang +1

In our recent work [Phys. Rev. Lett. 128, 137001 (2002)], we proposed that the apical oxygen vacancies act as anisotropic scattering impurities. Within the Born approximation, this…

cs.AR2021

RISC-NN: Use RISC, NOT CISC as Neural Network Hardware Infrastructure

Taoran Xiang, Lunkai Zhang, Shuqian An +9

Neural Networks (NN) have been proven to be powerful tools to analyze Big Data. However, traditional CPUs cannot achieve the desired performance and/or energy efficiency for NN app…

cond-mat.str-el2024

Charge bond order and s-wave superconductivity in the kagome lattice with electron-phonon coupling and electron-electron interaction

Qing-Geng Yang, Meng Yao, Da Wang +1

The effects of optical bond phonons coupled to electrons in two-dimensional lattices have attracted much interest recently, with the hope to explore unconventional superconducting…

physics.comp-ph2015

Adaptive model reduction for nonsmooth discrete element simulation

Martin Servin, Da Wang

A method for adaptive model order reduction for nonsmooth discrete element simulation is developed and analysed in numerical experiments. Regions of the granular media that collect…

Magnetotransport in overdoped La $_{2 - x}$ Sr $_{x}$ CuO $_{4}$ : a Fermi liquid approach

Rui-Ying Mao, Da Wang, Congjun Wu +1

Recently, several experiments on La $_{2 - x}$ Sr $_{x}$ CuO $_{4}$ (LSCO) challenged the Fermi liquid picture for overdoped cuprates, and stimulated intensive debates [1]. In this work, we s…

cond-mat.str-el2019

Slater and Mott insulating states in the SU(6) Hubbard model

Da Wang, Lei Wang, Congjun Wu

We perform large scale projector determinant quantum Monte-Carlo simulations to study the insulating states of the half-filled SU(6) Hubbard model on the square lattice. The transi…

cs.LG2021

Multi-Relation Aware Temporal Interaction Network Embedding

Ling Chen, Shanshan Yu, Dandan Lyu +1

Temporal interaction networks are formed in many fields, e.g., e-commerce, online education, and social network service. Temporal interaction network embedding can effectively mine…

cond-mat.mes-hall2018

Entanglement in a second order topological insulator on a square lattice

Qiang Wang, Da Wang, Qiang-Hua Wang

In a $d$ -dimensional topological insulator of order $d$ , there are zero energy states on its corners which have close relationship with its entanglement behaviors. We studied the b…

cond-mat.soft2023

Liquid phase fast electron tomography unravels the true 3D structure of colloidal assemblies

Daniel Arenas Esteban, Da Wang, Ajinkya Kadu +7

Electron tomography has become a commonly used tool to investigate the three-dimensional (3D) structure of nanomaterials, including colloidal nanoparticle assemblies. However, elec…

cond-mat.str-el2021

Doping-driven Antiferromagnetic Insulator -- Superconductor Transition: a Quantum Monte Carlo Study

Tianxing Ma, Da Wang, Congjun Wu

How superconductivity emerges in the vicinity of an antiferromagnetic insulating state is a long-standing issue of strong correlation physics. We study the transition from an antif…

Self-consistent theory of $2 \times 2$ pair density waves in kagome superconductors

Meng Yao, Yan Wang, Da Wang +2

Pair density wave (PDW) is an intriguing quantum matter proposed in the frontier of condensed matter physics. However, the existence of PDW in microscopic models has been rare. In…

Magnetotransport in overdoped La $_{2 - x}$ Sr $_{x}$ CuO $_{4}$ : Effect of anisotropic scattering

Rui-Ying Mao, Da Wang, Qiang-Hua Wang

We revisit the Hall effect and magnetoresistivity by incorporating the anisotropic scattering caused by apical oxygen vacancies in overdoped La-based cuprates. The theoretical calc…

cond-mat.str-el2015

Phonon enhancement of electronic orders and negative isotope effect in the Hubbard-Holstein model on a square lattice

Da Wang, Wan-Sheng Wang, Qiang-Hua Wang

Looking for superconductors with higher transition temperature requires a guiding principle. In conventional superconductors, electrons pair up into Cooper pairs via the retarded a…

cs.LG2026

MO-RiskVAE: A Multi-Omics Variational Autoencoder for Survival Risk Modeling in Multiple MyelomaMO-RiskVAE

Zixuan Chen, Heng Zhang, YuPeng Qin +5

Multimodal variational autoencoders (VAEs) have emerged as a powerful framework for survival risk modeling in multiple myeloma by integrating heterogeneous omics and clinical data.…

cond-mat.supr-con2013

Spontaneous time-reversal symmetry breaking in the boundary Majorana flat bands

Yi Li, Da Wang, Congjun Wu

We study the boundary Majorana modes for the single component p-wave weak topological superconductors or superfluids, which form zero energy flat bands protected by time-reversal s…

Necklace-like pattern of vortex bound states

Zhiyong Hou, Kailun Chen, Wenshan Hong +8

Vortex is a topological defect in the superconducting condensate when a magnetic field is applied to a type-II superconductor, as elucidated by the Ginzburg-Landau theory. Due to t…

cs.SI2021

TME-BNA: Temporal Motif-Preserving Network Embedding with Bicomponent Neighbor Aggregation

Ling Chen, Da Wang, Dandan Lyu +2

Evolving temporal networks serve as the abstractions of many real-life dynamic systems, e.g., social network and e-commerce. The purpose of temporal network embedding is to map eac…

Possible two-component spin-singlet pairings in Sr2RuO4

San-Jun Zhang, Da Wang, Qiang-Hua Wang

Recent experiments suggest a multi-component pairing function in Sr2RuO4, which appears to be inconsistent with the absence of an apparent cusp in the transition temperature (Tc) a…

cond-mat.str-el2022

A functional renormalization group study of the two dimensional Su-Schrieffer-Heeger-Hubbard model

Qing-Geng Yang, Da Wang, Qiang-Hua Wang

We study the Hubbard model on the square lattice coupled in addition to the optical Su-Schrieffer-Heeger (SSH) phonons, using the singular-mode functional renormalization group met…

cond-mat.str-el2022

Transition from band insulator to Mott insulator and formation of local moment in half-filled ionic SU( $N$ ) Hubbard model

Shan-Yue Wang, Da Wang, Qiang-Hua Wang

We investigate the local moment formation in the half-filled SU( $N$ ) Hubbard model under a staggered ionic potential. As the Hubbard $U$ increases, the charge fluctuations are supp…

nlin.CD2024

Novel nonlinear system family generated from coupling effect of Sin-Cosine function

Fangfang Zhang, Jinyi Ge, Cuimei Jiang +4

The Sine-Cosine function, which is widely adopted in mathematics and physics, has attracted our attention due to its unique properties. By delving into the coupling effect of the S…

cond-mat.soft2019

Binary icosahedral quasicrystals of hard spheres in spherical confinement

Da Wang, Tonnishtha Dasgupta, Ernest B. van der Wee +8

The influence of geometry on the local and global packing of particles is important to many fundamental and applied research themes such as the structure and stability of liquids,…

cond-mat.soft2025

A Robust Synthesis of Fluorosurfactants with Tunable Functions via a Two-Step Reaction

Jiyuan Yao, Shijian Huang, Shuting Xie +8

Fluorosurfactant-stabilized microdroplets hold significant promise for a wide range of applications, owing to their biological and chemical inertness. However, conventional synthet…

cond-mat.supr-con2010

Observation of Lattice and Andreev Bound States of Vortices in Ba0.6K0.4Fe2As2 Single Crystals with Scanning Tunneling Microscopy/Spectroscopy

Lei Shan, Yong-Lei Wang, Bing Shen +9

For a type-II superconductor, when the applied magnetic field is higher than the lower critical value Hc1, the magnetic flux will penetrate into the superconductor and form quantiz…

cond-mat.str-el2022

Determinant quantum Monte Carlo for the half-filled Hubbard model with nonlocal density-density interactions

Meng Yao, Da Wang, Qiang-Hua Wang

We design a novel formalism of determinant quantum Monte Carlo method for the half-filled Hubbard model with on-site Hubbard interaction $U$ and nearest neighbor density-density in…

cond-mat.supr-con2009

Theory of tunnelling into a multi-band superconductor: decoherence and interference

Da Wang, Yuan Wan, Qiang-Hua Wang

By an exact formulation of tunnelling into a multi-band superconductor in terms of Green's functions, we demonstrate that the multi-band feature of the iron-based superconductors c…

Symmetry Constraints on Direct-Current Josephson Diodes

Da Wang, Qiang-Hua Wang, Congjun Wu

It is necessary to break both time-reversal and parity symmetries to realize a Josephson, or superconducting, diode exhibiting nonreciprocal critical direct-currents (DC). In fact,…

cond-mat.str-el2014

Competing orders in the 2D half-filled SU(2N) Hubbard model through the pinning field quantum Monte-Carlo simulations

Da Wang, Yi Li, Zi Cai +3

We non-perturbatively investigate the ground state magnetic properties of the 2D half-filled SU( $2 N$ ) Hubbard model in the square lattice by using the projector determinant quantum…

cs.DC2014

Efficient Task Replication for Fast Response Times in Parallel Computation

Da Wang, Gauri Joshi, Gregory Wornell

One typical use case of large-scale distributed computing in data centers is to decompose a computation job into many independent tasks and run them in parallel on different machin…

Anomalous isotope Effect in d-wave superconductors on the square lattice

Gan Sun, Qing-Geng Yang, Da Wang +1

Isotope effect with a large coefficient $I^\pm = - \partial ln T_{c} / \partial ln M$ is usually taken as an evidence of phonon mediated superconductors in the Bardeen-Cooper-Schrieffer (B…

Yin-Yang vortex on UTe2 (011) surface

Ruotong Yin, Yuanji Li, Zengyi Du +14

UTe2 is a promising candidate for spin-triplet superconductor, yet its exact superconducting order parameter remains highly debated. Here, via scanning tunneling microscopy/spectro…

cond-mat.quant-gas2015

Mott insulating states and quantum phase transitions of correlated SU(2N) Dirac fermions

Zhichao Zhou, Da Wang, Zi Yang Meng +2

The interplay between charge and spin degrees of freedom in strongly correlated fermionic systems, in particular of Dirac fermions, is a long-standing problem in condensed matter p…

cond-mat.str-el2015

t2g-orbital model on a honeycomb lattice: application to antiferromagnet SrRu2O6

Da Wang, Wan-Sheng Wang, Qiang-Hua Wang

Motivated by the recent discovery of high temperature antiferromagnet SrRu $_{2}$ O $_{6}$ and its potential to be the parent of a new superconductor, we construct a minimal $t_{2 g}$ -orbi…

Tunable superconductivity and spin density wave in La3Ni2O7/LaAlO3 thin films

Yu-Han Cao, Kai-Yue Jiang, Hong-Yan Lu +2

Recently, La3Ni2O7 thin film on the LaAlO3 substrate is shown to be superconducting, while the bulk La3Ni2O7 with the same in-plane lattice constant under pressure does not superco…

cs.NE2025

Discrete Differential Evolution Particle Swarm Optimization Algorithm for Energy Saving Flexible Job Shop Scheduling Problem Considering Machine Multi States

Da Wang, Yu Zhang, Kai Zhang +2

As the continuous deepening of low-carbon emission reduction policies, the manufacturing industries urgently need sensible energy-saving scheduling schemes to achieve the balance b…

cond-mat.str-el2021

Reducing autocorrelation time in determinant quantum Monte Carlo using Wang-Landau algorithm: application to Holstein model

Meng Yao, Da Wang, Qiang-Hua Wang

When performing a Monte Carlo calculation, the running time should in principle be much longer than the autocorrelation time in order to get reliable results. Among different latti…

cond-mat.supr-con2023

Possible $S_{\pm}$ -wave superconductivity in La $_{3}$ Ni $_{2}$ O $_{7}$

Qing-Geng Yang, Da Wang, Qiang-Hua Wang

Recently, the bulk nickelate La $_{3}$ Ni $_{2}$ O $_{7}$ is reported to show signature of high-temperature superconductivity under high pressure above $14$ GPa [H. Sun et al., Nature 621, 493…

cond-mat.supr-con2023

Effect of anisotropic impurity scattering in d-wave superconductors

Ze-Long Wang, Rui-Ying Mao, Da Wang +1

In d $_{x^{2} - y^{2}}$ -wave superconductors, the effect of s-wave point disorder has been extensively studied in the literature. In this work, we study the anisotropic disorder with a th…

cond-mat.quant-gas2017

Finite-temperature valence-bond-solid transitions and thermodynamic properties of interacting SU( $2 N$ ) Dirac fermions

Zhichao Zhou, Da Wang, Congjun Wu +1

We investigate the SU( $2 N$ ) symmetry effects with $2 N > 2$ on the two-dimensional interacting Dirac fermions at finite temperatures, including the valence-bond-solid transition, the…

cond-mat.mes-hall2021

Andreev Reflections in NbN/graphene Junctions under Large Magnetic Fields

Da Wang, Evan J. Telford, Avishai Benyamini +7

Hybrid superconductor/graphene (SC/g) junctions are excellent candidates for investigating correlations between Cooper pairs and quantum Hall (QH) edge modes. Experimental studies…

2.4 GHz Flip-flop Device within Nonequilibrium Superconducting Diode

Xiangyu Bi, Hongyi Li, Aoshen Yang +12

Superconducting diode effect exhibits asymmetric critical supercurrent and has profound implications for condensed matter physics. The technical appeals of such superconducting dio…

cs.IT2017

Defect tolerance: fundamental limits and examples

Jennifer Tang, Da Wang, Yury Polyanskiy +1

This paper addresses the problem of adding redundancy to a collection of physical objects so that the overall system is more robust to failures. In contrast to its information coun…

cs.DC2017

Efficient Straggler Replication in Large-scale Parallel Computing

Da Wang, Gauri Joshi, Gregory Wornell

In a cloud computing job with many parallel tasks, the tasks on the slowest machines (straggling tasks) become the bottleneck in the job completion. Computing frameworks such as Ma…

cond-mat.str-el2024

Quantum Phonon Dynamics Induced Spontaneous Spin-Orbit Coupling

Xiangyu Zhang, Da Wang, Congjun Wu

Spin-orbit coupling in solids is typically a single-body effect arising from relativity. In this work, we propose a spontaneous generation of spin-orbit coupling from symmetry brea…

On Meissner Effect and Superfluid Density in Superconductors

Da Wang

As the most successful microscopic superconductivity theory, Bardeen-Cooper-Schrieffer(BCS) theory has a very peculiar prediction: at zero temperature, only a fraction of electrons…

cs.IT2011

The Dispersion of Joint Source-Channel Coding

Da Wang, Amir Ingber, Yuval Kochman

In this work we investigate the behavior of the distortion threshold that can be guaranteed in joint source-channel coding, to within a prescribed excess-distortion probability. We…

Variational Quantum Monte Carlo investigations of the superconducting pairing in La $_{3}$ Ni $_{2}$ O $_{7}$

Yi-Qun Liu, Da Wang, Qiang-Hua Wang

We investigate the pairing symmetry in the novel superconductor La $_{3}$ Ni $_{2}$ O $_{7}$ under pressure by the non-perturbative variational quantum Monte Carlo. Within the bilayer Hubbard…

Effective model and $s_{\pm}$ -wave superconductivity in trilayer nickelate La $_{4}$ Ni $_{3}$ O $_{10}$

Qing-Geng Yang, Kai-Yue Jiang, Da Wang +2

The recent discovery of bulk superconductivity in trilayer nickelate La $_{4}$ Ni $_{3}$ O $_{10}$ with the critical temperature $T_{c}$ near $30$ K under high pressure is attracting a new wav…

cond-mat.mes-hall2009

Electronic structure near an impurity and terrace on the surface of a 3-dimensional topological insulator

Qiang-Hua Wang, Da Wang, Fu-Chun Zhang

Motivated by recent scanning tunneling microscopy experiments on surfaces of Bi $_{1 - x}$ Sb $_{x^{'}}$ \cite{yazdanistm,gomesstm} and Bi $_{2}$ Te $_{3}$ ,\cite{kaptunikstm,xuestm} we theoretical…

cond-mat.str-el2024

Electronic orders on the kagome lattice at the lower Van Hove filling

Yi-Qun Liu, Yan-Bin Liu, Wan-Sheng Wang +2

We study the electronic orders at the lower van Hove filling in the kagome lattice. In the weak limit of the Hubbard interaction $U$ versus the hopping parameter $t$ , we find that…

cond-mat.mes-hall2014

The fate and heir of Majorana zero modes in a quantum wire array

Da Wang, Zhoushen Huang, Congjun Wu

Experimental signatures of Majorana zero modes in a single superconducting quantum wire with spin-orbit coupling have been reported as zero bias peaks in the tunneling spectroscopy…

physics.comp-ph2015

Warm starting the projected Gauss-Seidel algorithm for granular matter simulation

Da Wang, Martin Servin, Tomas Berglund

The effect on the convergence of warm starting the projected Gauss-Seidel solver for nonsmooth discrete element simulation of granular matter are investigated. It is found that the…

Anisotropic scattering caused by apical oxygen vacancies in thin films of overdoped high-temperature cuprate superconductors

Da Wang, Jun-Qi Xu, Hai-Jun Zhang +1

There is a hot debate on the anomalous behavior of superfluid density $I ¨ _{s}$ in overdoped La $_{2 - x}$ Sr $_{x}$ CuO $_{4}$ films in recent years. The linear drop of $I ¨ _{s}$ at low temperatur…

Josephson diode effect: a phenomenological perspective

Da Wang, Qiang-Hua Wang, Congjun Wu

As a novel quantum phenomenon with nonreciprocal supercurrent, the Josephson diode effect was intensively studied in recent years. Here, we construct a generalized resistively capa…

cond-mat.mes-hall2022

Tunable quantum criticalities in an isospin extended Hubbard model simulator

Qiao Li, Bin Cheng, Moyu Chen +13

Studying strong electron correlations has been an essential driving force for pushing the frontiers of condensed matter physics. In particular, in the vicinity of correlation-drive…

cond-mat.supr-con2012

High $T_{c}$ superconductivity at the FeSe/SrTiO $_{3}$ Interface

Fa Wang, Yuan-Yuan Xiang, Da Wang +2

In a recent experiment the superconducting gap of a single unit cell thick FeSe film on SrTiO $_{3}$ substrate is observed by scanning tunneling spectroscopy and angle-resolved photoe…

Scalable High-Temperature Superconducting Diodes in Intrinsic Josephson Junctions

Zihan Wei, Youkai Qiao, Yang-Yang Lyu +13

Superconducting diodes, characterized by nonreciprocal supercurrent transport, offer transformative opportunities for ultra-low-power circuits. However, achieving reliable operatio…

Quantized bound states around a vortex in anisotropic superconductors

Ke Xiang, Da Wang, Qiang-Hua Wang

The bound states around a vortex in anisotropic superconductors is a longstanding yet important issue. In this work, we develop a variational theory on the basis of the Andreev app…

cond-mat.str-el2018

Critical exponents of nonlinear sigma model on Grassmann manifold $U (N) / U (m) U (N - m)$ by $1/ N$ expansion

Shan-Yue Wang, Da Wang, Qiang-Hua Wang

Motivated by the numerical evidence of a continuous phase transition between antiferromagnetic and paramagnetic phases in the half-filled SU(N) Hubbbard model, we studied its low e…

Anomalous isotope effect in BCS superconductors with two boson modes

Gan Sun, Pan-Xiao Lou, Sheng-Qiang Lai +2

The isotope effect in the superconducting transition temperature is anomalous if the isotope coefficient $I^\pm < 0$ or $I^\pm > 1/2$ . In this work, we show that such anomalous behaviors can…

Phase-sensitive evidence for pair density waves in a kagome superconductor

Xiao-Yu Yan, Guowei Liu, Hanbin Deng +22

Pair density wave (PDW) exhibits periodic amplitude and sign modulations of the superconducting order parameter. Such a pairing state has long been proposed to be highly sensitive…

Genuine pair density wave order on the kagome lattice

Han-Yang Liu, Da Wang, Ziqiang Wang +1

The pair density wave (PDW) is a novel superconducting state with non-zero center-of-mass momentum Cooper pairing in the absence of external magnetic fields. Its realization in mic…

cs.LG2025

Goal-Guided Efficient Exploration via Large Language Model in Reinforcement Learning

Yajie Qi, Wei Wei, Lin Li +4

Real-world decision-making tasks typically occur in complex and open environments, posing significant challenges to reinforcement learning (RL) agents' exploration efficiency and l…

Strain-Engineered Electronic Structure and Superconductivity in La $_{3}$ Ni $_{2}$ O $_{7}$ Thin Films

Yu-Han Cao, Kai-Yue Jiang, Hong-Yan Lu +2

Recently, the films of the Ruddlesden-Popper (RP) nickelate superconductors, in which the (La,Pr) $_{3}$ Ni $_{2}$ O $_{7}$ system exhibits a remarkable transition temperature $T_{c}$ exceeding…