Kavli Affiliate: Brad Ramshaw | Summary:Cuprates are the paradigmatic `unconventional’ superconductors: their critical temperature is much higher than can be expected from phonon-mediated pairing; the superconducting gap has $d$-wave symmetry; and the normal-metallic state appears to be far from a conventional Fermi liquid. These and numerous other experimental facts have led to a consensus that […]
Kavli Affiliate: Kyle Shen | First 5 Authors: Wei Shen, Wei Shen, , , | Summary: We study bilevel optimization problems where the lower-level problems are strongly convex and have coupled linear constraints. To overcome the potential non-smoothness of the hyper-objective and the computational challenges associated with the Hessian matrix, we utilize penalty and augmented […]
Kavli Affiliate: David Muller | Summary:The ability to tune electronic structure in twisted stacks of two-dimensional (2D) materials has motivated the exploration of similar moiré physics with twisted oxide membranes. Due to the intrinsic three-dimensional nature of bonding in many oxides, achieving atomic-level coupling is significantly more challenging than with van der Waals materials. Although […]
Kavli Affiliate: Debanjan Chowdhury | Summary:Skyrmions are emergent many-body excitations that lie at the heart of both multi-component quantum Hall-like systems and deconfined quantum criticality. In a companion article (X. Wang et al., arXiv:2507.22971), we studied a microscopic time-reversal symmetric model of tunable interacting Chern bands using numerically exact determinant quantum Monte Carlo calculations, and […]
Kavli Affiliate: Kinfai Mak | First 5 Authors: Zijian Feng, Zijian Feng, , , | Summary: Pruning is a widely used technique to reduce the size and inference cost of large language models (LLMs), but it often causes performance degradation. To mitigate this, existing restoration methods typically employ parameter-efficient fine-tuning (PEFT), such as LoRA, to […]
Kavli Affiliate: Daniel C. Ralph | First 5 Authors: Xiaoxi Huang, Xiaoxi Huang, , , | Summary: To achieve efficient anti-damping switching of nanoscale magnetic memories with perpendicular magnetic anisotropy using spin-orbit torque requires that the anti-damping spin-orbit torque have a strong out-of-plane component. The spin anomalous Hall effect and the planar Hall effect spin […]
Kavli Affiliate: Darrell Schlom| First 5 Authors: Xiaoxi Huang, Xiaoxi Huang, , , | Summary:To achieve efficient anti-damping switching of nanoscale magnetic memories with perpendicular magnetic anisotropy using spin-orbit torque requires that the anti-damping spin-orbit torque have a strong out-of-plane component. The spin anomalous Hall effect and the planar Hall effect spin current produced by […]
Kavli Affiliate: Dan Luo | First 5 Authors: Qingqing Gu, Qingqing Gu, , , | Summary: Chain-of-Thought (CoT) is widely applied to enhance the LLM capability in math, coding and reasoning tasks. However, its performance is limited for open-domain tasks, when there are no clearly defined reasoning steps or logical transitions. To mitigate such challenges, […]
Kavli Affiliate: Richard D. Robinson | Summary:Semiconductor magic-size clusters (MSCs) are atomically precise nanoparticles exhibiting unique size-dependent properties, but their ultrasmall dimensions hinder structural characterization, limiting our understanding of their formation and stability. A few MSC structures have been fully resolved, revealing either bulk-like zincblende-type structures or a range of non-bulk-like motifs. Here we use […]
Kavli Affiliate: Farhan Rana | Summary:Spin Hall magnetoresistance (SMR) measurements provide a way to probe the surface spin structure of insulating magnetic materials. Such measurements produce resistance signals of the form $Δ$R $propto$ cos[2($α$-$α$$_0$)], where $α$ is the angle between the current and the external in-plane magnetic field. Previous experiments on a wide range of […]