# Room-Temperature Superconductivity Claims & Replication Domain: Superconductivity & Quantum Materials · 232 papers indexed · newest 2026-10-29 High-profile claims (LK-99, retracted hydride papers) and replication efforts; the evidentiary standard of zero resistance plus a bulk Meissner effect. Key concepts: room-temperature superconductor, LK-99, copper-doped lead apatite, replication, near-ambient superconductivity, Meissner effect ## Most influential - **[Superconductivity in sodalite-like yttrium hydride clathrates](https://space-kitty.com/papers/arxiv:1901.04001)**. Christoph Heil, Simone Di Cataldo, Giovanni B. Bachelet et al. · 2019 · Physical review. B./Physical review. B (arXiv:1901.04001 · doi:10.1103/physrevb.99.220502 · 154 citations). Source: > We report ab-initio calculations of the superconducting properties of two high-Tc sodalite-like clathrate yttrium hydrides, YH6 and YH10, within the fully anisotropic ME theory, including Coulomb corrections. For both compounds we find almost isotropic superconducting gaps, resulting from a uniform distribution of the electron-phonon coupling over phonon modes and electronic states of mixed Y and H character. The Coulomb screening is rather weak, resulting in a Morel-Anderson pseudopotential mu\*= 0:11, at odds with claims of unusually large Tc in lanthanum hydrides. The corresponding critical … - **[Everything you always wanted to know about metallic hydrogen but were afraid to ask](https://space-kitty.com/papers/doi:10.1063/5.0002104)**. Eugene Gregoryanz, Cheng Ji, Philip Dalladay‐Simpson et al. · 2020 · Matter and Radiation at Extremes (doi:10.1063/5.0002104 · 89 citations). Source: > The hydrogen molecule is made from the first and lightest element in the periodic table. When hydrogen gas is either compressed or cooled, it forms the simplest molecular solid. This solid exhibits many interesting and fundamental physical phenomena. It is believed that if the density of the solid is increased by compressing it to very high pressures, hydrogen will transform into the lightest known metal with very unusual and fascinating properties, such as room temperature superconductivity and/or superfluidity. In this article, we provide a critical look at the numerous claims of hydrogen me… > _Abstract excerpt by Eugene Gregoryanz et al., CC-BY, https://doi.org/10.1063/5.0002104; truncated._ - **[Absence of conventional room-temperature superconductivity at high pressure in carbon-doped H3S](https://space-kitty.com/papers/arxiv:2104.03710)**. Tianchun Wang, Motoaki Hirayama, Takuya Nomoto et al. · 2021 · Physical review. B./Physical review. B (arXiv:2104.03710 · doi:10.1103/physrevb.104.064510 · 54 citations). Source: > In this work, we show that the same theoretical tools that successfully explain other hydrides systems under pressure seem to be at odds with the recently claimed conventional room temperature superconductivity of the carbonaceous sulfur hydride. We support our conclusions with I) the absence of a dominant low-enthalpy stoichiometry and crystal structure in the ternary phase diagram. II) Only the thermodynamics of C-doping phases appears to be marginally competing in enthalpy against H$\_3$S. III) Accurate results of the transition temperature given by ab initio Migdal-Eliashberg calculations d… - **[The First Room-Temperature Ambient-Pressure Superconductor](https://space-kitty.com/papers/arxiv:2307.12008)**. Sukbae Lee, Ji-Hoon Kim, Young-Wan Kwon · 2023 (arXiv:2307.12008 · 52 citations). Source: > For the first time in the world, we succeeded in synthesizing the room-temperature superconductor ($T\_c \\ge 400$ K, 127$^\\circ$C) working at ambient pressure with a modified lead-apatite (LK-99) structure. The superconductivity of LK-99 is proved with the Critical temperature ($T\_c$), Zero-resistivity, Critical current ($I\_c$), Critical magnetic field ($H\_c$), and the Meissner effect. The superconductivity of LK-99 originates from minute structural distortion by a slight volume shrinkage (0.48 %), not by external factors such as temperature and pressure. The shrinkage is caused by Cu$^{2+}$ su… - **[Synthesis of possible room temperature superconductor LK-99:Pb$\_9$Cu(PO$\_4$)$\_6$O](https://space-kitty.com/papers/arxiv:2307.16402)**. Kapil Kumar, N. K. Karn, V. P. S. Awana · 2023 · Superconductor Science and Technology 36, 10LT02 (2023) (arXiv:2307.16402 · doi:10.1088/1361-6668/acf002 · 39 citations). Source: > The quest for room-temperature superconductors has been teasing scientists and physicists, since its inception in 1911 itself. Several assertions have already been made about room temperature superconductivity but were never verified or reproduced across the labs. The cuprates were the earliest high transition temperature superconductors, and it seems that copper has done the magic once again. Last week, a Korean group synthesized a Lead Apatite-based compound LK-99, showing a T$\_c$ of above 400$^\\circ$K. The signatures of superconductivity in the compound are very promising, in terms of resis… - **[Absence of near-ambient superconductivity in LuH$\_{2\\pm\\text{x}}$N$\_y$](https://space-kitty.com/papers/arxiv:2303.08759)**. Xue Ming, Ying-Jie Zhang, Xiyu Zhu et al. · 2023 · Nature 620, 72-77 (2023) (arXiv:2303.08759 · doi:10.1038/s41586-023-06162-w · 87 citations). Source: > Recently near-ambient superconductivity was claimed in N-doped lutetium hydride (ref. 1). This induces a worldwide fanaticism about the dream of room temperature superconductivity under low pressures. By using a high pressure and high temperature synthesis technique, we have successfully obtained the nitrogen doped lutetium hydride (LuH$\_{2\\pm\\text{x}}$N$\_y$) with a dark-bluish color and a structure with the space group of $Fm\\bar{3}m$ evidenced by x-ray diffraction. This structure is the same as that reported in ref. 1. The energy dispersive X-ray spectroscopy (EDS) confirmed the existence of… - **[Superconductivity and electron self-energy in tungsten-sulfur-hydride monolayer](https://space-kitty.com/papers/doi:10.1088/2053-1583/ad2523)**. Jakkapat Seeyangnok, M M Ul Hassan, Udomsilp Pinsook et al. · 2024 · 2D Materials (doi:10.1088/2053-1583/ad2523 · 29 citations). Source: > Abstract Hydrogen-rich structures have recently gained attention as a candidate for room-temperature superconductors. Hydrogen has high phonon frequencies and can be an ideal component for superconductors if it also exhibits strong electron–phonon coupling. In bulk materials, this has been achieved only under very high pressure. Two-dimensional hydrogen-decorated materials can also be expected to become superconductors. Recently, it was shown that a Janus MoSH monolayer can be synthesized (Lu et al 2017 Nat. Nanotechnol. 12 744–9), and a theoretical investigation of this MoSH monolayer claimed… > _Abstract excerpt by Jakkapat Seeyangnok et al., CC-BY, https://doi.org/10.1088/2053-1583/ad2523; truncated._ - **[Absence of superconductivity in LK-99 at ambient conditions](https://space-kitty.com/papers/arxiv:2308.03544)**. Kapil Kumar, N. K. Karn, Yogesh Kumar et al. · 2023 · ACS Omega (arXiv:2308.03544 · doi:10.1021/acsomega.3c06096 · 35 citations). Source: > The report of synthesis of modified Lead apatite (LK-99) with evidence of superconductivity at more than boiling water temperature has steered the whole scientific community. There have been several failures to reproduce superconductivity in LK-99 including partial successes. Here, we have continued our efforts to synthesize phase pure LK-99 with improved precursors. The process has been followed as suggested by Sukbae Lee et. al., \[1,2\]. The phase purity of each precursor is evidenced by Powder X-ray diffraction (PXRD) and well fitted by Rietveld refinement. The PXRD confirms the synthesis of… - **[Ferromagnetic half levitation of LK-99-like synthetic samples](https://space-kitty.com/papers/arxiv:2308.03110)**. Kaizhen Guo, Yuan Li, Shuang Jia · 2023 · SCIENCE CHINA Physics, Mechanics & Astronomy , Volume 66, Issue 10: 107411 (2023) (arXiv:2308.03110 · doi:10.1007/s11433-023-2201-9 · 41 citations). Source: > We successfully synthesized polycrystalline LK-99-like ceramic samples with a solid-state-sintering method. Powder X-ray diffraction shows that the main contents are $\\mathrm{Pb\_{10-x}Cu\_x(PO\_4)\_6O}$ and $\\mathrm{Cu\_2S}$, consistent with recent reports \[arXiv:2307.12037; arXiv:2308.01192\]. In some small flaky fragments, we successfully observed \`\`half levitation'' atop a $\\mathrm{Nd\_2Fe\_{14}B}$ magnet. Using magnetization measurements on such small pieces, as well as on a large piece which does not exhibit the half levitation, we show that the samples ubiquitously contain weak yet definitive s… - **[Electronic structure of the putative room-temperature superconductor Pb$\_9$Cu(PO$\_4$)$\_6$O](https://space-kitty.com/papers/arxiv:2308.00676)**. Liang Si, Karsten Held · 2023 · Physical Review B 108, L121110 (2023) (arXiv:2308.00676 · doi:10.1103/physrevb.108.l121110 · 43 citations). Source: > A recent paper \[Lee {\\em et al.}, J. Korean Cryt. Growth Cryst. Techn. {\\bf 33}, 61 (2023)\] provides some experimental indications that Pb$\_{10-x}$Cu$\_x$(PO$\_4$)$\_6$O with $x\\approx 1$, coined LK-99, might be a room-temperature superconductor at ambient pressure. Our density-functional theory calculations show lattice parameters and a volume contraction with $x$ -- very similar to experiment. The DFT electronic structure shows Cu$^{2+}$ in a $3d^9$ configuration with two flat Cu bands crossing the Fermi energy. This puts Pb$\_{9}$Cu(PO$\_4$)$\_6$O in an ultra-correlated regime and suggests that, … - **[Leading components and pressure-induced color changes in N-doped lutetium hydride](https://space-kitty.com/papers/arxiv:2304.08992)**. Xiangru Tao, Aiqin Yang, Shuxiang Yang et al. · 2023 · 中国科学通报：英文版 (arXiv:2304.08992 · doi:10.1016/j.scib.2023.06.007 · 29 citations). Source: > Recent experimental study by Dias {\\it et al.} claims to have discovered room-temperature superconductivity in lutetium-nitrogen-hydrogen system at 1 GPa \[Nature 615, 244 (2023)\], which sheds light on the long-held dream of ambient superconductivity. However, all follow-up experiments found no evidence of superconductivity. The compositions and the crystal structures of the lutetium-nitrogen-hydrogen system remain unknown. By employing the density functional theory based structure prediction algorithm, we suggest that in lutetium-nitrogen-hydrogen the major component is LuH$\_2$ (Fm$\\bar{3}$m),… - **[Interorbital singlet pairing in Sr2RuO4 : A Hund's superconductor](https://space-kitty.com/papers/arxiv:2105.08448)**. S. Käser, Hugo U. R. Strand, Nils Wentzell et al. · 2022 · Physical review. B./Physical review. B (arXiv:2105.08448 · doi:10.1103/physrevb.105.155101 · 24 citations). Source: > We study the superconducting gap function of Sr$\_2$RuO$\_4$. By solving the linearized Eliashberg equation with a correlated pairing vertex extracted from a dynamical mean-field calculation we identify the dominant pairing channels. An analysis of the candidate gap functions in orbital and quasiparticle band basis reveals that an inter-orbital singlet pairing of even parity is in agreement with experimental observations. It reconciles in particular the occurrence of a two-component order parameter with the presence of line-nodes of quasiparticles along the c-axis in the superconducting phase. T… - **[Microscopic theory of colour in lutetium hydride](https://space-kitty.com/papers/arxiv:2304.07326)**. Sun-Woo Kim, Lewis J. Conway, Chris J. Pickard et al. · 2023 · Nature Communications 14, 7360 (2023) (arXiv:2304.07326 · doi:10.17863/cam.102168 · 21 citations). Source: > Nitrogen-doped lutetium hydride has recently been proposed as a near-ambient-conditions superconductor. Interestingly, the sample transforms from blue to pink to red as a function of pressure, but only the pink phase is claimed to be superconducting. Subsequent experimental studies have failed to reproduce the superconductivity, but have observed pressure-driven colour changes including blue, pink, red, violet, and orange. However, discrepancies exist among these experiments regarding the sequence and pressure at which these colour changes occur. Given the claimed relationship between colour a… - **[On the dynamical stability of copper-doped lead apatite](https://space-kitty.com/papers/arxiv:2309.11541)**. Sun-Woo Kim, Kang Wang, Siyu Chen et al. · 2023 · npj Computational Materials 10, 16 (2024) (arXiv:2309.11541 · doi:10.1038/s41524-024-01206-9 · 15 citations). Source: > The recent claim of room temperature superconductivity in a copper-doped lead apatite compound, called LK-99, has sparked remarkable interest and controversy. Subsequent experiments have largely failed to reproduce the claimed superconductivity, while theoretical works have identified multiple key features including strong electronic correlation, structural instabilities, and dopability constraints. A puzzling claim of several recent theoretical studies is that both parent and copper-doped lead apatite structures are dynamically unstable at the harmonic level, questioning decades of experiment… - **[Superconductivity scandal: the inside story of deception in a rising star’s physics lab](https://space-kitty.com/papers/doi:10.1038/d41586-024-00716-2)**. Dan Garisto · 2024 · Nature (doi:10.1038/d41586-024-00716-2 · 18 citations). Source: ## Newest - **[Growth and morphology of core-shell nanowires incorporating dissimilar hexagonal semiconductors: the case of InAs-ZnTe](https://space-kitty.com/papers/arxiv:2610.39770)**. Danylo Mosiiets, Susheng Tan, Sergey Frolov et al. · 2026 (arXiv:2610.39770). Source: - **[Incoherent dark excitons extend Floquet-like physics across time and momentum](https://space-kitty.com/papers/arxiv:2610.38156)**. Xing Zhu, Jacques Hawecker, Enrico Perfetto et al. · 2026 (arXiv:2610.38156). Source: - **[Programmable Quantum-Geometric Coherence for Ambient-Pressure Room-Temperature Superconductivity](https://space-kitty.com/papers/doi:10.5281/zenodo.23734254)**. Giustino Travaglini · 2026 · Zenodo (CERN European Organization for Nuclear Research) (doi:10.5281/zenodo.23734254). Source: - **[1MEL-H: A Mechanically and Electrochemically Locked Hydrogen Superconductor](https://space-kitty.com/papers/doi:10.5281/zenodo.23613523)**. Giustino Travaglini · 2026 · Zenodo (CERN European Organization for Nuclear Research) (doi:10.5281/zenodo.23613523). Source: - **[Multi-property Feynman-Kac Steering of Crystal Diffusion Models](https://space-kitty.com/papers/arxiv:2610.24828)**. Oded Mousai, Sapir Esther Yiflach, Barak Itzchak Davidovitch et al. · 2026 (arXiv:2610.24828). Source: - **[Room\_Temperature\_Superconductor](https://space-kitty.com/papers/doi:10.5281/zenodo.23299438)**. CHAOCHAO MA · 2026 · Zenodo (CERN European Organization for Nuclear Research) (doi:10.5281/zenodo.23299438). Source: - **[MOSAIC-SC: A Modular Oxide–Moiré– Hydrogen Platform for Testing Cooperative Pairing at Ambient Pressure](https://space-kitty.com/papers/doi:10.5281/zenodo.23301989)**. Giustino Travaglini · 2026 · Zenodo (CERN European Organization for Nuclear Research) (doi:10.5281/zenodo.23301989). Source: - **[Beyond BCS: Pairing Mechanisms, Material Families and the Contested Path to Ambient-Condition Superconductivity](https://space-kitty.com/papers/doi:10.5281/zenodo.23031326)**. ideal research review · 2026 · Zenodo (CERN European Organization for Nuclear Research) (doi:10.5281/zenodo.23031326). Source: - **[Electrochemical Growth of Full Volume Meissner Effect Superconducting BKBO](https://space-kitty.com/papers/arxiv:2609.30677)**. Oleksandr Foyevtsov, Kateryna Foyevtsova, Mohamed Oudah et al. · 2026 (arXiv:2609.30677). Source: - **[The Coldest Current of All: A Historical Development Review of Superconductivity from Leyden to the Cuprates](https://space-kitty.com/papers/doi:10.5281/zenodo.22956820)**. Zen Revista, 10 PHYSICS · 2026 · Zenodo (CERN European Organization for Nuclear Research) (doi:10.5281/zenodo.22956820). Source: --- Space Kitty Archive · https://space-kitty.com · API: https://space-kitty.com/api/v1 · MCP: https://space-kitty.com/mcp · Premium: $0.20/request via x402 (Base Sepolia (testnet)). Metadata: arXiv (CC0), OpenAlex (CC0), Europe PMC (CC BY/CC0 works), ClinicalTrials.gov.