Observation of superconductivity in hydrogen sulfide from nuclear resonant scattering

Author:

Troyan Ivan12,Gavriliuk Alexander23,Rüffer Rudolf4,Chumakov Alexander45,Mironovich Anna3,Lyubutin Igor2,Perekalin Dmitry6,Drozdov Alexander P.6,Eremets Mikhail I.6

Affiliation:

1. Max-Planck-Institut für Chemie, 55020 Mainz, Germany.

2. Shubnikov Institute of Crystallography, Russian Academy of Sciences, Moscow 119333, Russia.

3. Institute for Nuclear Research, Russian Academy of Sciences, Troitsk, Moscow 142190, Russia.

4. European Synchrotron Radiation Facility, CS40220, F-38043 Grenoble Cedex 9, France.

5. National Research Center “Kurchatov Institute,” 123182 Moscow, Russia.

6. A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Moscow 119991, Russia.

Abstract

Peeking into a diamond pressure cell A defining characteristic of a superconductor is that it expels an external magnetic field. Demonstrating this effect can be tricky when the sample is under enormous pressures in a diamond anvil cell. Troyan et al. placed a tinfoil sensor inside a sample of H 2 S under pressure. They then bombarded it with synchrotron radiation and watched how the scattering of photons of tin nuclei changed over time. When H 2 S was in the normal state, an external magnetic field reached the sensor through the sample, causing the nuclear levels of tin to split. In the superconducting state, however, no splitting was observed because H 2 S expelled the field before it could reach the sensor. Science , this issue p. 1303

Funder

European Research Council

Max Planck Institute for Chemistry

Russian Science Foundation

Russian Foundation for Basic Researches

Russian Academy of Sciences

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

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