Publications (25)
Observation of an Emergent Coherent State in the Iron-Based Superconductor KFeAs
Run Yang, Zhiping Yin, Yilin Wang +5
The optical properties of KFeAs have been measured for light polarized in the a-b planes over a wide temperature and frequency range. Below K, where this…
Observation of optical gyromagnetic properties in a magneto-plasmonic metamaterial
Weihao Yang, Qing Liu, Hanbin Wang +8
Metamaterials with artificial optical properties have attracted significant research interest. In particular, artificial magnetic resonances in non-unity permeability tensor at opt…
Observation of topological nodal-line semimetal in YbMnSb2 through optical spectroscopy
Ziyang Qiu, Congcong Le, Zhiyu Liao +5
The optical properties of YbMnSb2 have been measured in a broad frequency range from room temperature down to 7 K. With decreasing temperature, a flat region develops in the optica…
Unravelling the mechanism of the semiconducting-like behavior and its relation to superconductivity in (CaFePtAs)PtAs
Run Yang, Yaomin Dai, Jia Yu +6
The temperature-dependence of the in-plane optical properties of (CaFePtAs)PtAs have been investigated for the undoped (0) parent compound, and…
Infrared spectroscopic studies of the topological properties in CaMnSb2
Ziyang Qiu, Congcong Le, Yaomin Dai +6
We present temperature-dependent infrared spectroscopic studies of CaMnSb2, a proposed threedimensional topological material. The low plasma edge in the reflectivity spectrum and s…
Optical study of the antiferromagnetic ordered state in electron-overdoped Ca0.77Nd0.23FeAs2
Run Yang, Bing Xu, Yaomin Dai +4
In Ca1-xRExFeAs2 (RE= rare earth), an antiferromagnetic (AFM) phase as well as a structural transition has been reported, even in the electron-overdoped regime. Here we investigate…
MemeMind: Reference-Guided Trace Construction for Offline Context Optimization
Run Yang, Weihang Wang, Boheng Sheng +7
Offline context optimization improves an agent by revising its instructions and examples while keeping the model frozen. This approach learns from rollouts on an adaptation set, bu…
Experimental progress in Eu(Al,Ga) topological antiferromagnets
Tian Shang, Yang Xu, Shang Gao +3
The non-trivial magnetic and electronic phases occurring in topological magnets are often entangled, thus leading to a variety of exotic physical properties. Recently, the BaAl…
Multitier Service Migration Framework Based on Mobility Prediction in Mobile Edge Computing
Run Yang, Hui He, Weizhe Zhang
Mobile edge computing (MEC) pushes computing resources to the edge of the network and distributes them at the edge of the mobile network. Offloading computing tasks to the edge ins…
MemeBench: What LVLMs Miss When Interpreting Culture-Dependent Memes
Weihang Wang, Kainan Tu, Jielei Zhang +9
The paper presents MemeBench, a diagnostic benchmark of 1,253 Chinese and English memes that evaluates how large vision‑language models handle cultural and background knowledge, an…
Spatio-temporal Prediction of Fine-Grained Origin-Destination Matrices with Applications in Ridesharing
Run Yang, Runpeng Dai, Siran Gao +3
Accurate spatial-temporal prediction of network-based travelers' requests is crucial for the effective policy design of ridesharing platforms. Having knowledge of the total demand…
The breakdown of both strange metal and superconducting states at a pressure-induced quantum critical point in iron-pnictide superconductors
Shu Cai, Jinyu Zhao, Ni Ni +11
The strange metal (SM) state, characterized by a linear-in-temperature resistivity, is often seen in the normal state of high temperature superconductors. It is believed that the S…
The discovery of three-dimensional Van Hove singularity
Wenbin Wu, Zeping Shi, Mykhaylo Ozerov +20
Arising from the extreme/saddle point in electronic bands, Van Hove singularity (VHS) manifests divergent density of states (DOS) and induces various new states of matter such as u…
Critical-point anomalies in doped CeRhIn5
Renjith Mathew Roy, Sudip Pal, Run Yang +5
The heavy-fermion compound CeRhIn can be tuned through a quantum critical point, when In is partially replaced by Sn. This way additional charge carriers are introduced and the…
Structure-Aware Robust Fine-Tuning: Defending Vision-Language-Action Robots Against Physical Attention Hijacking
Jinquan Zhang, Dongfu Yin, Run Yang +3
Vision-Language-Action (VLA) policies promise general robotic manipulation, but their robustness against physical-world attacks remains fragile. In particular, we show that physica…
Switching the Optical Chirality in Magneto-plasmonic Metasurfaces Using Applied Magnetic Fields
Jun Qin, Longjiang Deng, Tongtong Kang +11
Chiral nanophotonic devices are promising candidates for chiral molecules sensing, polarization diverse nanophotonics and display technologies. Active chiral nanophotonic devices,…
Directional diffusion models for graph representation learning
Run Yang, Yuling Yang, Fan Zhou +1
In recent years, diffusion models have achieved remarkable success in various domains of artificial intelligence, such as image synthesis, super-resolution, and 3D molecule generat…
OPSDL: On-Policy Self-Distillation for Long-Context Language Models
Xinsen Zhang, Zhenkai Ding, Tianjun Pan +4
Extending the effective context length of large language models (LLMs) remains a central challenge for real-world applications. While recent post-training methods have made progres…
R1-RE: Cross-Domain Relation Extraction with RLVR
Runpeng Dai, Tong Zheng, Run Yang +2
Relation extraction (RE) is a core task in natural language processing. Traditional approaches typically frame RE as a supervised learning problem, directly mapping context to labe…
Pressure-induced coevolution of transport properties and lattice stability in CaK(Fe1-xNix)4As4 (x= 0.04 and 0) superconductors with and without spin-vortex crystal state
Pengyu Wang, Chang Liu, Run Yang +15
Here we report the first investigation on correlation between the transport properties and the corresponding stability of the lattice structure for CaK(Fe1-xNix)4As4 (x=0.04 and 0)…
Breach in the Shield: Unveiling the Vulnerabilities of Large Language Models
Runpeng Dai, Run Yang, Fan Zhou +1
Large Language Models (LLMs) and Vision-Language Models (VLMs) have achieved impressive performance across a wide range of tasks, yet they remain vulnerable to carefully crafted pe…
Temperature-induced band shift in ferromagnetic Weyl semimetal Co3Sn2S2
Run Yang, Tan Zhang, Liqin Zhou +4
The discovery of nonmagnetic Weyl semimetals (WSMs) in TaAs compounds has triggered lots of efforts in finding its magnetic counterpart. While the direct observation of the Weyl no…
Deviation from canonical collective creep behavior in LiFeOHFeSe
Yue Sun, Sunseng Pyon, Run Yang +4
We present an extensive study of the vortex dynamics in LiFeOHFeSe single crystal, which is prepared by intercalating insulating spacer layer LiFeOH…
Formation of As-As Bond and Its Effect on Absence of Superconductivity in Collapsed Tetragonal Phase of Ca0.86Pr0.14Fe2As2 : An Optical Spectroscopy Study
Run Yang, Congcong Le, Lei Zhang +6
The temperature dependence of in plane optical conductivity has been investigated for Ca0.86Pr0.14Fe2As2 which shows a structural transition from tetragonal (T) to collapsed tetrag…
StatEval: A Comprehensive Benchmark for Large Language Models in Statistics
Yuchen Lu, Run Yang, Yichen Zhang +6
Despite rapid advances in large language models (LLMs), statistical reasoning remains underrepresented in existing LLM benchmarks, which often do not reflect the layered, proof-dri…