Uspekhi Fizicheskih Nauk最新文献

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Stopping and scattering of atoms with keV energies in matter 能量为 keV 的原子在物质中的停止和散射
Uspekhi Fizicheskih Nauk Pub Date : 2024-03-01 DOI: 10.3367/ufnr.2024.03.039666
Pavel Yu. Babenko, Aleksandr N. Zinov'ev, Andrei P. Shergin
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引用次数: 0
Vasilii Petrovich Neznamov (on his 80th birthday) 瓦西里-彼得罗维奇-涅兹纳莫夫(80 岁生日)
Uspekhi Fizicheskih Nauk Pub Date : 2024-03-01 DOI: 10.3367/ufnr.2024.03.039670
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引用次数: 0
Zel’dovich's spin physics (on the 110th anniversary of the birth of Yakov Borisovich Zeldovich) 泽尔多维奇的自旋物理学(纪念雅科夫-鲍里索维奇-泽尔多维奇诞辰 110 周年)
Uspekhi Fizicheskih Nauk Pub Date : 2024-03-01 DOI: 10.3367/ufnr.2024.03.039668
Anatolii L. Buchachenko
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引用次数: 0
Thermodynamic properties of zirconium nitride in the condensed state 凝聚态氮化锆的热力学性质
Uspekhi Fizicheskih Nauk Pub Date : 2024-02-01 DOI: 10.3367/ufnr.2024.02.039654
N. Ari̇stova, S. Onufriev, A. I. Savvatimskiy
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引用次数: 0
Diamond phase in space and possibility of its spectroscopic detection 空间钻石相及其光谱探测的可能性
Uspekhi Fizicheskih Nauk Pub Date : 2024-02-01 DOI: 10.3367/ufnr.2024.02.039656
Andrei A. Shiryaev
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引用次数: 0
Physics news on the Internet: March 2024 互联网上的物理新闻:2024 年 3 月
Uspekhi Fizicheskih Nauk Pub Date : 2024-02-01 DOI: 10.3367/ufnr.2024.02.039644
Y. N. Eroshenko
{"title":"Physics news on the Internet: March 2024","authors":"Y. N. Eroshenko","doi":"10.3367/ufnr.2024.02.039644","DOIUrl":"https://doi.org/10.3367/ufnr.2024.02.039644","url":null,"abstract":"Room-temperature superconductivity discovered recently in hydrides only exists under a giant pressure of 267 GPa. In this connection, the search for the possibility of lowering pressure while retaining superconductivity has become a topical problem. L Deng (University of Houston, USA) and coauthors have carried out an experiment showing, based on the example of another type superconductorÐ iron selenide (FeSe) single crystalsÐ that the problem can be solved through pressure-induced quenching, i.e., an abrupt pressure removal at low temperature [1]. The superconducting transition temperature of FeSe is Tc 9 K at atmospheric pressure and Tc ˆ 37 K at a pressure of several GPa. FeSe specimens were pressed in a diamond anvil to 4.15 GPa and cooled to 4.2 K, and then the pressure was abruptly removed. After such a quenching, the specimens retained Tc ˆ 37 K at atmospheric pressure for 7 days. The transition between orthorhombic and tetragonal structures of the crystal lattice, when FeSe remains in the metastable phase after quenching, is likely to explain the quenching effect on Tc. The results obtained for FeSe hold promise that pressure-induced quenching may also stabilize hydride superconductors. For high-temperature superconductors, see [2]. The 2003 Nobel Prize laureate in physics V L Ginzburg placed the creation of room-temperature superconductors on the list of the most topical problems in physics [3].","PeriodicalId":380152,"journal":{"name":"Uspekhi Fizicheskih Nauk","volume":"13 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139875430","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Physics news on the Internet: March 2024 互联网上的物理新闻:2024 年 3 月
Uspekhi Fizicheskih Nauk Pub Date : 2024-02-01 DOI: 10.3367/ufnr.2024.02.039644
Y. N. Eroshenko
{"title":"Physics news on the Internet: March 2024","authors":"Y. N. Eroshenko","doi":"10.3367/ufnr.2024.02.039644","DOIUrl":"https://doi.org/10.3367/ufnr.2024.02.039644","url":null,"abstract":"Room-temperature superconductivity discovered recently in hydrides only exists under a giant pressure of 267 GPa. In this connection, the search for the possibility of lowering pressure while retaining superconductivity has become a topical problem. L Deng (University of Houston, USA) and coauthors have carried out an experiment showing, based on the example of another type superconductorÐ iron selenide (FeSe) single crystalsÐ that the problem can be solved through pressure-induced quenching, i.e., an abrupt pressure removal at low temperature [1]. The superconducting transition temperature of FeSe is Tc 9 K at atmospheric pressure and Tc ˆ 37 K at a pressure of several GPa. FeSe specimens were pressed in a diamond anvil to 4.15 GPa and cooled to 4.2 K, and then the pressure was abruptly removed. After such a quenching, the specimens retained Tc ˆ 37 K at atmospheric pressure for 7 days. The transition between orthorhombic and tetragonal structures of the crystal lattice, when FeSe remains in the metastable phase after quenching, is likely to explain the quenching effect on Tc. The results obtained for FeSe hold promise that pressure-induced quenching may also stabilize hydride superconductors. For high-temperature superconductors, see [2]. The 2003 Nobel Prize laureate in physics V L Ginzburg placed the creation of room-temperature superconductors on the list of the most topical problems in physics [3].","PeriodicalId":380152,"journal":{"name":"Uspekhi Fizicheskih Nauk","volume":"25 6","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139815292","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Schwinger—DeWitt technique in quantum gravity 量子引力中的施文格-德维特技术
Uspekhi Fizicheskih Nauk Pub Date : 2024-02-01 DOI: 10.3367/ufnr.2024.02.039646
A. O. Barvinskii, Vlad N. Vakhovsky
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引用次数: 0
Quantum random number generators, extraction of provably random bit sequences from Markov chain trajectories 量子随机数发生器,从马尔可夫链轨迹提取可证明的随机比特序列
Uspekhi Fizicheskih Nauk Pub Date : 2024-02-01 DOI: 10.3367/ufnr.2024.02.039658
I. M. Arbekov, Sergei N. Molotkov
{"title":"Quantum random number generators, extraction of provably random bit sequences from Markov chain trajectories","authors":"I. M. Arbekov, Sergei N. Molotkov","doi":"10.3367/ufnr.2024.02.039658","DOIUrl":"https://doi.org/10.3367/ufnr.2024.02.039658","url":null,"abstract":"","PeriodicalId":380152,"journal":{"name":"Uspekhi Fizicheskih Nauk","volume":"17 ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140463979","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
40th anniversary of the Prokhorov General Physics Institute of the Russian Academy of Sciences 俄罗斯科学院普罗霍罗夫普通物理研究所成立 40 周年
Uspekhi Fizicheskih Nauk Pub Date : 2024-01-01 DOI: 10.3367/ufnr.2024.01.039640
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引用次数: 0
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