Details

Autor(en) / Beteiligte

• Troyan, Ivan
• Gavriliuk, Alexander
• Rüffer, Rudolf
• Chumakov, Alexander
• Mironovich, Anna
• Lyubutin, Igor
• Perekalin, Dmitry
• Drozdov, Alexander P.
• Eremets, Mikhail I.

Titel

Observation of superconductivity in hydrogen sulfide from nuclear resonant scattering

Ist Teil von

• Science (American Association for the Advancement of Science), 2016-03, Vol.351 (6279), p.1303-1306

Ort / Verlag

United States: American Association for the Advancement of Science

Erscheinungsjahr

2016

Quelle

American Association for the Advancement of Science

Beschreibungen/Notizen

• High-temperature superconductivity remains a focus of experimental and theoretical research. Hydrogen sulfide (H₂S) has been reported to be superconducting at high pressures and with a high transition temperature. We report on the direct observation of the expulsion of the magnetic field in H₂S compressed to 153 gigapascals. A thin ¹¹⁹Sn film placed inside the H₂S sample was used as a sensor of the magnetic field. The magnetic field on the ¹¹⁹Sn sensor was monitored by nuclear resonance scattering of synchrotron radiation. Our results demonstrate that an external static magnetic field of about 0.7 tesla is expelled from the volume of ¹¹⁹Sn foil as a result of the shielding by the H₂S sample at temperatures between 4.7 K and approximately 140 K, revealing a superconducting state of H₂S.