Kavli Affiliate: Chris Xu | First 5 Authors: The bbchallenge Collaboration, The bbchallenge Collaboration, , , | Summary: We prove that $S(5) = 47,176,870$ using the Coq proof assistant. The Busy Beaver value $S(n)$ is the maximum number of steps that an $n$-state 2-symbol Turing machine can perform from the all-zero tape before halting, and […]
Kavli Affiliate: David A. Muller | First 5 Authors: Harikrishnan KP, Harikrishnan KP, , , | Summary: With the decreasing sizes of integrated-circuit components, the semiconductor industry is in growing need of high-throughput strain mapping techniques that offer high precision and spatial resolution, with desired industry goals of 0.01-0.1% and 1 nm respectively. As the […]
Kavli Affiliate: Gregory D. Fuchs | First 5 Authors: Jaimin Kang, Jaimin Kang, , , | Summary: Magnetic tunnel junctions (MTJs) based on ferromagnets are canonical devices in spintronics, with wide-ranging applications in data storage, computing, and sensing. They simultaneously exhibit mechanisms for electrical detection of magnetic order through the tunneling magnetoresistance (TMR) effect, and […]
Kavli Affiliate: David A. Muller | First 5 Authors: Yixin Li, Yixin Li, , , | Summary: Differentiable rendering has been widely adopted in computer graphics as a powerful approach to inverse problems, enabling efficient gradient-based optimization by differentiating the image formation process with respect to millions of scene parameters. Inspired by this paradigm, we […]
Kavli Affiliate: Jie Shan | First 5 Authors: Jinghao Deng, Jinghao Deng, , , | Summary: Rhombohedral multilayer graphene has emerged as a promising platform for exploring correlated and topological quantum phases, enabled by its Berry-curvature-bearing flat bands. While prior work has focused on separated conduction and valence bands, we probe the extensive semimetallic regime […]
Kavli Affiliate: Frank W. Wise | First 5 Authors: Varun Sharma, Varun Sharma, , , | Summary: While nonlinear effects in graded-index (GRIN) multimode fibers have been studied extensively, little is known about nonlinear effects in larger GRIN waveguides, where the number of modes approaches infinity and modal dispersion becomes negligible. Here we show that […]
Kavli Affiliate: David A. Muller | First 5 Authors: Jaehong Choi, Jaehong Choi, , , | Summary: The Josephson junction is a crucial element in superconducting devices, and niobium is a promising candidate for the superconducting material due to its large energy gap relative to aluminum. AlO$_x$ has long been regarded as the highest quality […]
Kavli Affiliate: David A. Muller | First 5 Authors: Zixiao Shi, Zixiao Shi, , , | Summary: When hydrogen atoms occupy interstitial sites in metal lattices, they form metal hydrides (MHx), whose structural and electronic properties can differ significantly from the host metals. Owing to the small size of hydrogen atom and its unique interactions […]
Kavli Affiliate: Dan Luo | First 5 Authors: Wei Chen, Wei Chen, , , | Summary: Singing Voice Conversion (SVC) transfers a source singer’s timbre to a target while keeping melody and lyrics. The key challenge in any-to-any SVC is adapting unseen speaker timbres to source audio without quality degradation. Existing methods either face timbre […]
Kavli Affiliate: Jie Shan | First 5 Authors: Yiyu Xia, Yiyu Xia, , , | Summary: The emergence of high transition temperature (Tc) superconductivity in strongly correlated materials remains a major unsolved problem in physics. High-Tc materials, such as cuprates, are generally complex and not easily tunable, making theoretical modelling difficult. Although the Hubbard model–a […]