Flux trapping in superconducting hydrides under high pressure

Abstract

High-temperature conventional superconductivity in hydrogen-rich materials under high pressure has been reportedly found in twelve different compounds in recent years. However, the experimental evidence on which these claims are based has recently been called into question. Here we discuss the measurement of trapped magnetic flux, that should establish definitively that these materials are indeed high-temperature superconductors. Its absence should confirm claims to the contrary.

minor changes; to be published in Physica C

References in corpus (15)

• Superconductivity at 253 K in lanthanum-yttrium ternary hydrides
• Superconductivity to 262 kelvin via catalyzed hydrogenation of yttrium at high pressures
• Superconducting hydrides under pressure
• High-Pressure Synthesis of Barium Superhydrides: Pseudocubic BaH12
• BCS theory of superconductivity: the world's largest Madoff scheme?
• Nonstandard superconductivity or no superconductivity in hydrides under high pressure
• Superconductivity up to 243 K in yttrium hydrides under high pressure
• Anomalous behavior in high-pressure carbonaceous sulfur hydride
• Absence of conventional room temperature superconductivity at high pressure in carbon doped H${}_3$S
• Momentum of superconducting electrons and the explanation of the Meissner effect
• A portable magnetic field of > 3 T generated by the flux jump assisted, pulsed field magnetisation of bulk superconductors
• Absence of magnetic evidence for superconductivity in hydrides under high pressure
• The road to room-temperature conventional superconductivity
• Meissner effect in nonstandard superconductors
• Superconductivity at ~70 K in Tin Hydride SnHx under High Pressure

Cited by in corpus (8)

• High-temperature superconductivity in hydrides: experimental evidence and details
• Meissner effect in nonstandard superconductors
• Evidence against superconductivity in flux trapping experiments on hydrides under high pressure & On magnetic field screening and expulsion in hydride superconductors
• Faulty evidence for superconductivity in ac magnetic susceptibility of sulfur hydride under pressure
• Clear evidence against superconductivity in hydrides under high pressure
• On the ac magnetic susceptibility of a room temperature superconductor: anatomy of a probable scientific fraud
• Broadening of In-Field Superconducting Transitions in Hydrides
• Superconducting $I$$\overline{4}$3$m$ CSH${}_7$ model applied to resistive transition temperature data for compressed C-S-H at high pressure