![]() Thereafter, T c up to around 250 K was found in transition metal superhydrides YH 9 (ref. 3) suggested that T c could be much higher in conventional superconductors for which the Bardeen–Cooper–Schrieffer theory 4, 5, 6 was established. The discovery of superconductivity in H 3S with T c of approximately 200 K (ref. A decade ago, superconductivity was assumed to be a solely low-temperature phenomenon with the highest superconducting critical temperature of T c ≈ 130 K found in mercury-containing 1 and thallium-containing 2 cuprate superconductors. The current search for room-temperature superconductivity has progressed due to advances in high-pressure studies. ![]() This approach can also be a tool for studying multiphase samples or samples that have a low superconducting fraction at ambient pressure. ![]() We reveal that the absence of a pronounced Meissner effect is associated with the very strong pinning of vortices inside the samples. The behaviour of the trapped flux generated under zero-field-cooled and field-cooled conditions proves the existence of superconductivity in these materials. Contrary to traditional magnetic susceptibility measurements, the magnetic response from the trapped flux is almost unaffected by the background signal of the diamond anvil cell due to the absence of external magnetic fields. Here we implement a non-conventional protocol for the magnetic measurements of superconductors in a SQUID magnetometer and probe the trapped magnetic flux in two near-room-temperature superconductors H 3S and LaH 10 at high pressures. However, experimental studies are limited by high-pressure conditions, and electrical transport measurements have been the primary technique for detecting superconductivity in hydrides. This material may not be published, broadcast, rewritten, or redistributed.Recent discoveries of superconductivity in various hydrides at high pressures have shown that a critical temperature of superconductivity can reach near-room-temperature values. “Obviously, it took a lot of people to make that happen, so I’m glad that those people did pull over because they were able to help and they definitely made a positive impact,” Stephenson separately said. “I’m sure I’m going to get a lot of hassle from the guys over the next couple of days too, so I’m coming in hot.” ![]() “This will be a memorable moment in my career,” he said. Speaking Thursday afternoon, he said he won’t soon forget the morning’s events. Stephenson started with the Manchester-by-the-Sea Fire Department on Monday. In this incident, he helped take care of the driver, who suffered non-life-threatening injuries, until Beverly firefighters arrived. Stephenson has been an EMT for more than 10 years. In addition to Stephenson, two other good Samaritans scrambled to help. “I think anybody else would have done the same thing,” Stephenson said of his response. The driver was trapped inside and in trouble. ![]() Stephenson said he was on his way to work when he spotted flames shooting from a car that went off the road, got hung up on a guardrail and burst into flames. ![]()
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