Semiconducting Transport in LK99 reproduction attempt(arxiv.org)
576 points by spekcular | 240 comments
arXiv preprint reporting a synthesis of the LK-99 compound Pb10-xCux(PO4)6O that shows semiconducting rather than superconducting transport.
First screen, captured .
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Possible Meissner effect near room temperature: copper-substituted lead apatite(arxiv.org)
687 points by zaikunzhang | 287 comments
arXiv preprint reporting possible Meissner effect near room temperature in copper-substituted lead apatite (LK-99-type material), based on magnetization measurements.
Observation of zero resistance above 100 K in Pb₁₀₋ₓCuₓ(PO₄)₆O(arxiv.org)
734 points by segfaultbuserr | 348 comments
arXiv preprint reporting zero resistance above 100 K at ambient pressure in a synthesized polycrystalline sample of copper-doped lead apatite (LK-99).
Electronic Structure of LK-99(arxiv.org)
497 points by spekcular | 373 comments
arXiv preprint presenting DFT calculations of the electronic structure of the putative room-temperature superconductor LK-99 (Pb9Cu(PO4)6O), finding flat Cu bands at the Fermi level.
Related stories
Loyal workers are selectively and ironically targeted for exploitation(sciencedirect.com)
341 points by ck45 | 219 comments
Abstract page for a Journal of Experimental Social Psychology paper finding that loyal workers are selectively targeted for exploitation by managers.
Deep Learning Is Not So Mysterious or Different(arxiv.org)
445 points by wuubuu | 112 comments
arXiv paper by Andrew Gordon Wilson arguing deep learning generalization phenomena like benign overfitting and double descent are explainable by soft inductive biases.
GPT-5.2 derives a new result in theoretical physics(openai.com)
545 points by davidbarker | 369 comments
OpenAI post announcing that GPT-5.2 derived a new result in theoretical physics; the captured page shows only a loading logo.
A New Experiment Meta-Strategy(chillphysicsenjoyer.substack.com)
26 points by surprisetalk | 1 comments
A Substack post by an amateur physicist describing a new strategy for doing home experiments after reorganizing a messy lab to fit limited free evenings.
There is no epidemic of loneliness, but there is an epidemic of scurvy(experimental-history.com)
59 points by luu | 31 comments
An Experimental History Substack essay by Adam Mastroianni arguing there is no loneliness epidemic but there is an epidemic of scurvy.
Some critical issues with the SWE-bench dataset(arxiv.org)
331 points by joshwa | 113 comments
arXiv paper introducing SWE-Bench+, an empirical analysis revealing data quality issues in the SWE-bench coding benchmark for LLMs, such as solution leakage and weak tests.