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How Classroom Rituals Help Create Community https://greatergood.berkeley.edu/article/item/how_classroom_rituals_help_create_community?utm_source=dlvr.it&utm_co…

How Classroom Rituals Help Create Community
Small practices, repeated regularly and with intentionality, can help students feel a sense of belonging at school.

A rutile-based homologous series Na(PtO$_2$)$_{2\it{n} 1}$ discovered by computationally assisted high-pressure synthesis
Yasuhito Kobayashi, Hidefumi Takahashi, Shunsuke Kitou, Akitoshi Nakano, Hajime Sagayama, Yuichi Yamasaki, Shintaro Ishiwata
https://arxiv.org/abs/2508.15223

A rutile-based homologous series Na(PtO$_2$)$_{2\it{n}+1}$ discovered by computationally assisted high-pressure synthesis
Layered transition metal oxides typified by the Ruddlesden-Popper phase have been extensively studied for its applications in high-temperature superconductivity, catalysis, and battery technologies. Despite the remarkable structural diversity and catalytic functionality of platinum oxides, the exploration of layered polymorphs has remained significantly constrained mainly due to the high inertness of platinum. Here, we discover a new homologous series of layered ternary oxides, Na(PtO$_2$)$_{2\…

Lattice-charge coupling in a trilayer nickelate with intertwined density wave order
Xun Jia, Yao Shen, Harrison LaBollita, Xinglong Chen, Junjie Zhang, Yu Li, Hengdi Zhao, Mercouri G. Kanatzidis, Matthew Krogstad, Hong Zheng, Ayman Said, Ahmet Alatas, Stephan Rosenkranz, Daniel Phelan, Mark P. M. Dean, M. R. Norman, J. F. Mitchell, Antia S. Botana, Yue Cao

Lattice-charge coupling in a trilayer nickelate with intertwined density wave order
Intertwined charge and spin correlations are ubiquitous in a wide range of transition metal oxides and are often perceived as intimately related to unconventional superconductivity. Theoretically envisioned as driven by strong electronic correlations, the intertwined order is usually found to be strongly coupled to the lattice as signaled by pronounced phonon softening. Recently, both charge/spin density waves (CDW/SDW) and superconductivity have been discovered in several Ruddlesden-Popper (RP…

The NazoNazo Benchmark: A Cost-Effective and Extensible Test of Insight-Based Reasoning in LLMs
Masaharu Mizumoto, Dat Nguyen, Zhiheng Han, Jiyuan Fang, Heyuan Guan, Xingfu Li, Naoya Shiraishi, Xuyang Tian, Yo Nakawake, Le Minh Nguyen
https://arxiv.org/abs/2509.14704

The NazoNazo Benchmark: A Cost-Effective and Extensible Test of Insight-Based Reasoning in LLMs
Benchmark saturation and contamination undermine confidence in LLM evaluation. We present Nazonazo, a cost-effective and extensible benchmark built from Japanese children's riddles to test insight-based reasoning. Items are short (mostly one sentence), require no specialized domain knowledge, and can be generated at scale, enabling rapid refresh of blind sets when leakage is suspected. We evaluate 38 frontier models and 126 adults on 120 riddles. No model except for GPT-5 is comparable to human…

Strain-Engineered Electronic Structure and Superconductivity in La$_3$Ni$_2$O$_7$ Thin Films
Yu-Han Cao, Kai-Yue Jiang, Hong-Yan Lu, Da Wang, Qiang-Hua Wang
https://arxiv.org/abs/2507.13694

Strain-Engineered Electronic Structure and Superconductivity in La$_3$Ni$_2$O$_7$ Thin Films
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 40 K, were synthesized at ambient pressure. We systematically investigate the band structures and electronic correlation effect to identify the key factors controlling superconductivity and pathways to enhance $T_c$. Based on density functional theory (DFT) calculations, we construct a bilayer two-orbital ($3d_{3z^2-…

Anthropic updates Claude usage policy, adding stricter cybersecurity rules and explicitly banning the development of WMDs, and loosens political content rules (Emma Roth/The Verge)
https://www.theverge.com/news/760080/anthropic-updated-usage-policy-…

Anthropic has new rules for a more dangerous AI landscape
Anthropic has updated its usage policy to ban people from using its AI chatbot to help develop biological, chemical, radiological, or nuclear weapons.

Piezomagnetism-driven magnetoelectric coupling in altermagnetic multiferroic K3Cr2F7
Ying Zhou, Hui-Min Zhang, Cheng-Ao Ji, Hongjun Xiang, Shuai Dong, James M. Rondinelli, Xue-Zeng Lu
https://arxiv.org/abs/2508.13952

Piezomagnetism-driven magnetoelectric coupling in altermagnetic multiferroic K3Cr2F7
Ferroelectric control of altermagnetism in momentum space has been studied widely, while the control of magnetism in real space of altermagnets are still rare. We present a design rule to identify multiferroicity in n=2 Ruddlesden-Popper halides. Our results show that a Jahn-Teller distortion can cooperate with oxygen octahedral rotations to break inversion symmetry, which we demonstrate in K3Cr2F7 and cation-ordered KAg2Cu2Cl7, and leads to a ferrielectric-to-ferroelectric phase transition in …

Let freedom wing?
Canada jay, Perisoreus canadensis, at the summit of Rattlesnake Ledge outside Seattle
#naturalist #wildlife #bird

Fast 40 Jahre nach seiner Abspaltung vom Filchner Schelfeis verliert der #Eisberg A-23A zunehmend große Stücke.
Im Juli 2025 brachen zwei neue Eisberge ab, A-23D und A-23E, mit Flächen von 159 und 73 Quadratkilometern.
A-23A treibt derzeit nördlich von #Südgeorgien und ist trotz…

Diverse polymorphism in Ruddlesden-Popper chalcogenides
Prakriti Kayastha, Erik Fransson, Paul Erhart, Lucy Whalley
https://arxiv.org/abs/2507.11300 https:…

Diverse polymorphism in Ruddlesden-Popper chalcogenides
Ruddlesden-Popper (RP) chalcogenides are stable, non-toxic candidates for optoelectronic or thermoelectric applications. The structural diversity of RP oxides is already exploited to tune properties or achieve more advanced functionalities like multiferroicity, however, little is known about the structural evolution of RP chalcogenides. In this work, we develop a high-accuracy machine-learned interatomic potential to run large-scale molecular dynamics simulations on $Ba_{n+1}Zr_nS_{3n+1}$ for $…