Mastodawn

Interessante Entwicklungen im Bereich der Materialwissenschaft! LK-99, ein neuartiges Material, zeigt ungewöhnliche magnetische Eigenschaften, die die Aufmerksamkeit der Physik-Community erregen. Die Behauptung, es könnte bei Raumtemperatur supraleiten, ist bislang jedoch nicht endgültig belegt. Wissenschaftler bitten um sorgfältige Überprüfung – spannende Zeiten für Forschung und Technologie!

#Supraleitung #Physik #Wissenschaft #LK99 #Materialforschung

🔗 https://news.google.com/rss/articles/CBMipAFBVV95cUxNUlhkU3ctM09rakFXTjZSUk5jMGZaR0M4X0ttV3J6eDJ4WUJiRUZWblkwSHFHbF9mU1Yya1JiSTl3Unlja0NEV2VzMnhyVjNHUG4wZnJOMkpoN3NhVG93RC0waHktbWNDSTNKUWxIcGQ2ZHAtdTJCUXdiYnNqWl9BazA0ZFlzUDBVaHlGSUpvUmI4clJGNzY4Q0o1QWJJNTJRSjhlSA?oc=5

Before you continue

Global Feed 2d ago

LK‑99 – ein neues Material, das die Diskussion um Supraleitung bei Raumtemperatur neu entfacht.

- Erste Experimente zeigen ungewöhnliches Leit‑ und Magnetverhalten.
- Ob das tatsächlich ein stabiler Raum‑Temperatur‑Supraleiter ist, bleibt offen – Replikationen sind nötig.

Spannend für Forschung, aber noch kein Durchbruch. #Physik #Supraleitung #LK99 #ScienceNews #OpenResearch

Before you continue

🍀 Egghat НетBойне 🍀Jan 17, 2024

heise online: Neue Spekulationen zu Supraleitern bei Raumtemperatur https://www.heise.de/news/Neue-Spekulationen-zu-Supraleitern-bei-Raumtemperatur-9599087.html
Bei nur -26°, aber es ist noch nicht sicher reproduziert, und die „magnetisches Feldstärke“ ist relativ schwach“. #lk99

Möglicher Supraleiter mit veränderter Rezeptur

Zwei chinesische Forschungsteams haben unabhängig voneinander ein Material hergestellt, das bei -23 Grad Celsius möglicherweise supraleitend wird.

heise online

Stephen Brooks 🦆Jan 6, 2024

"New research reignites the possibility of LK-99 #superconductivity at room temperature — controversial material demonstrates the tell-tale Meissner Effect up to 250 K"
#physics #LK99
https://www.tomshardware.com/tech-industry/superconductors/new-research-reinforces-the-possibility-of-lk-99-room-temperature-superconductivity-controversial-material-demonstrates-the-tell-tale-meissner-effect-up-to-250-k

New research reignites the possibility of LK-99 superconductivity at room temperature — controversial material demonstrates the tell-tale Meissner Effect up to 250 K

A glimmer of hope emerges.

Tom's Hardware

Quantum Observer Jan 4, 2024

It’s Back: Researchers Say They’ve Replicated LK-99 Room Temperature Superconductor Experiment https://thequantuminsider.com/?p=2360041 #Research #coppersubstituted_lead_apatite #CSLA #LK99 #roomtemperature_superconductor #Superconducting #superconductor #quantumdaily Insider Brief A team of researchers report the replication experiments suggest a copper-substituted lead apatite (CSLA) may serve as a candidate for room-temperature superconductivity. Last year, replication efforts on a similar r

It's Back: Researchers Say They've Replicated LK-99 Room Temperature Superconductor Experiment

Researchers say a copper-substituted lead apatite (CSLA) may serve as a candidate for room-temperature superconductivity.

The Quantum Insider

Mікє Вυгг Oct 19, 2023

Is it possible to arrange permanent magnets so that they repel Iron? Can there be a "push" vector ever?

What if we allow for moving arrangements of permanent magnets and consider eddy currents?

For example, what about spinning a magnet on an axle so that n-s are alternately pointing "at" the iron? (or...)

#physics #maglev #superconductors #magnets #lk99

RealSci Nano moved (see bio)Oct 4, 2023

Have you heard all the fuzz about #LK99 some time ago?

If you didn't: some researchers claimed that they discovered a room temperature superconductor.

But what are superconductors anyway?

Howard Chu @ Symas Oct 4, 2023

3 new pre-prints talk about #LK99 being a semiconductor. This one shows that there's still a few different potential products of the synthesis, and while the common copper-doped forms are definitely semiconductors, sulphur doping might still yield a superconductor https://arxiv.org/abs/2309.07928

Deciphering the Enigma of Cu-Doped Lead Apatite (LK-99): Structural Insights, Electronic Properties, and Implications for Ambient-Pressure Superconductivity

The most recent discovery, the Cu-doped lead apatite LK-99, is a proposed room-temperature superconductor operating under ambient pressure. However, this discovery has brought a slew of conflicting results from different scientific groups. While some observed the absence of electrical resistance, others could not confirm any signs of superconductivity in LK-99. Here, we investigate the structural and electronic properties of LK-99 and its antecedent compounds through quantum mechanics (QM) and QM-based molecular dynamics (QM-MD) simulations. Our study elucidates the insulating nature of base compounds, Pb$_{10}$(PO$_4$)$_6$O and Pb$_{10}$(PO$_4$)$_6$(OH)$_2$, spotlighting their large band gaps. Notably, Cu doping in LK-99 disrupts its symmetry, yielding a distorted ground-state crystal structure with a triclinic P1 symmetry and CuO$_4$ square coordination. Such alterations predispose LK-99 to exhibit semiconducting behaviors, characterized by a flat band above the Fermi energy, arising from Cu-3d and O-2p orbitals. In addition, the S doping sustains the triclinic P1 symmetry but leads to a significantly reduced band gap, with a band emerging primarily from Cu-3d and S-3p orbitals. These findings are important in understanding LK-99's structural and electronic properties and provide a strategic compass for the development of high-T$_C$ superconductors.

arXiv.org