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231226s2022 xx |||||o 00| ||eng c |
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|a 10.1002/adma.202204038
|2 doi
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|a pubmed24n1144.xml
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|a (DE-627)NLM343500485
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|a (NLM)35829689
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|a DE-627
|b ger
|c DE-627
|e rakwb
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|a eng
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|a Semenok, Dmitrii V
|e verfasserin
|4 aut
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|a Effect of Magnetic Impurities on Superconductivity in LaH10
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|c 2022
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|a Text
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|a ƒaComputermedien
|b c
|2 rdamedia
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|a ƒa Online-Ressource
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|2 rdacarrier
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|a Date Revised 20.10.2022
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a © 2022 Wiley-VCH GmbH.
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|a Polyhydrides are a novel class of superconducting materials with extremely high critical parameters, which is very promising for sensor applications. On the other hand, a complete experimental study of the best so far known superconductor, lanthanum superhydride LaH10 , encounters a serious complication because of the large upper critical magnetic field HC2 (0), exceeding 120-160 T. It is found that partial replacement of La atoms by magnetic Nd atoms results in significant suppression of superconductivity in LaH10 : each at% of Nd causes a decrease in TC by 10-11 K, helping to control the critical parameters of this compound. Strong pulsed magnetic fields up to 68 T are used to study the Hall effect, magnetoresistance, and the magnetic phase diagram of ternary metal polyhydrides for the first time. Surprisingly, (La,Nd)H10 demonstrates completely linear HC2 (T) ∝ |T - TC |, which calls into question the applicability of the Werthamer-Helfand-Hohenberg model for polyhydrides. The suppression of superconductivity in LaH10 by magnetic Nd atoms and the robustness of TC with respect to nonmagnetic impurities (e.g., Y, Al, C) under Anderson's theorem gives new experimental evidence of the isotropic (s-wave) character of conventional electron-phonon pairing in lanthanum decahydride
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|a Journal Article
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|a Anderson's theorem
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|a high pressure
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|a hydrides
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|a superconductivity
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|a Troyan, Ivan A
|e verfasserin
|4 aut
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|a Sadakov, Andrey V
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|a Zhou, Di
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|a Galasso, Michele
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|a Kvashnin, Alexander G
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|a Ivanova, Anna G
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|a Kruglov, Ivan A
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|a Bykov, Alexey A
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|a Terent'ev, Konstantin Y
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|a Cherepakhin, Alexander V
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|a Sobolevskiy, Oleg A
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|a Pervakov, Kirill S
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|a Seregin, Alexey Yu
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|a Helm, Toni
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|a Förster, Tobias
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|a Grockowiak, Audrey D
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|a Tozer, Stanley W
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|a Nakamoto, Yuki
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|a Shimizu, Katsuya
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|a Pudalov, Vladimir M
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|a Lyubutin, Igor S
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|a Oganov, Artem R
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Advanced materials (Deerfield Beach, Fla.)
|d 1998
|g 34(2022), 42 vom: 25. Okt., Seite e2204038
|w (DE-627)NLM098206397
|x 1521-4095
|7 nnns
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|g volume:34
|g year:2022
|g number:42
|g day:25
|g month:10
|g pages:e2204038
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|u http://dx.doi.org/10.1002/adma.202204038
|3 Volltext
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