Pub Date : 2024-07-01DOI: 10.3367/ufne.2024.07.039706
Ivan A Shcherbakov
{"title":"On the 60th anniversary of receiving the Nobel Prize for the discovery of the laser-maser principle","authors":"Ivan A Shcherbakov","doi":"10.3367/ufne.2024.07.039706","DOIUrl":"https://doi.org/10.3367/ufne.2024.07.039706","url":null,"abstract":"","PeriodicalId":20068,"journal":{"name":"Physics-Uspekhi","volume":null,"pages":null},"PeriodicalIF":3.1,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141690998","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-07-01DOI: 10.3367/ufne.2024.07.039712
Y. N. Eroshenko
States combining superfluidity and crystalline periodicity are called superfluid solid states (SSSs). The possibility of their existence was predicted theoretically by A F Andreev and I M Lifshitz (Zh. Eksp. Teor. Fiz. 56 2057 (1969) [Sov. Phys. JETP 29 1107 (1969)]) and G V Chester (Phys. Rev. A 2 256 (1970)) and A J Leggett (Phys. Rev. Lett. 25 1543 (1970)). The conditions for an SSS to appear are the presence of a roton minimum on the dispersion curve and quantum stabilization. An observation of SSSs in solid helium-4 was reported in 2004, but the result has not been confirmed. The SSS was reliably discovered in 2009 in rubidium atom gas in a periodic potential generated by the radiation field. The possibility of the roton minimum and SSS occurring was also predicted without an external periodic field. Three independent teams of researchers confirmed this prediction when they discovered the SSS in Bose±Einstein condensates of gases whose atoms have large magnetic dipole moments. An absorption image of atomic wave interference was obtained in a condensate cloud upon its free expansion. This was how periodically located phase-coherent drops of Bose±Einstein condensate were observed. Two groups guided by G Modugno (University of Florence, Italy) and T Pfau (University of Stuttgart, Germany) examined the Dy isotope. The SSS lifetime measured by them was equal to 30 ms. This time was limited by three-body losses. 3D-modeling based on the generalized Gross±Pitaevsky equation showed good agreement between theory and experiment. F Ferlaino (University of Innsbruck, Austria) and her colleagues revealed SSSs in the gas of Er and Dy isotopes. An SSS lasts 30 ms in Er and 150 ms in Dy. Sources: Phys. Rev. Lett. 122 153601 (2019) Phys. Rev. X 9 011051, 021012 (2019) https://doi.org/10.1103/PhysRevLett.122.130405 https://doi.org/10.1103/PhysRevX.9.011051 https://doi.org/10.1103/PhysRevX.9.021012
将超流动性和晶体周期性结合起来的状态被称为超流固态（SSSs）。A F Andreev 和 I M Lifshitz 从理论上预测了它们存在的可能性（Zh.Eksp.Teor.Fiz.56 2057 (1969) [Sov. Phys. JETP 29 1107 (1969)]) 和 G V Chester (Phys. Rev. A 2 256 (1970)) 以及 A J Leggett (Phys. Rev. Lett. 25 1543 (1970))。出现 SSS 的条件是色散曲线上存在罗顿最小值和量子稳定。2004 年有报告称在固态氦-4 中观测到了 SSS，但该结果尚未得到证实。2009 年，在辐射场产生的周期势中的铷原子气体中可靠地发现了 SSS。在没有外部周期场的情况下，也预测了发生罗顿最小值和 SSS 的可能性。三个独立的研究小组在原子具有大磁偶极矩的气体玻色±爱因斯坦凝聚体中发现了 SSS，从而证实了这一预测。在凝结云自由膨胀时，获得了原子波干涉的吸收图像。玻色±爱因斯坦凝聚态的周期性相干液滴就是这样被观测到的。由 G Modugno（意大利佛罗伦萨大学）和 T Pfau（德国斯图加特大学）指导的两个小组研究了镝同位素。他们测得的 SSS 寿命等于 30 毫秒。这个时间受到三体损耗的限制。基于广义格罗斯±皮塔耶夫斯基方程的三维建模表明理论与实验之间存在良好的一致性。F Ferlaino（奥地利因斯布鲁克大学）和她的同事们揭示了铒和镝同位素气体中的SS。一个 SSS 在 Er 中持续 30 毫秒，在 Dy 中持续 150 毫秒。资料来源：Phys：来源：Phys.122 153601 (2019) Phys. Rev. X 9 011051, 021012 (2019) https://doi.org/10.1103/PhysRevLett.122.130405 https://doi.org/10.1103/PhysRevX.9.011051 https://doi.org/10.1103/PhysRevX.9.021012
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Pub Date : 2024-07-01DOI: 10.3367/ufne.2024.07.039714
M. N. Popova, Mosab Diab, K. Boldyrev
{"title":"High-resolution spectroscopy of functional dielectrics with rare-earths ions","authors":"M. N. Popova, Mosab Diab, K. Boldyrev","doi":"10.3367/ufne.2024.07.039714","DOIUrl":"https://doi.org/10.3367/ufne.2024.07.039714","url":null,"abstract":"","PeriodicalId":20068,"journal":{"name":"Physics-Uspekhi","volume":null,"pages":null},"PeriodicalIF":3.1,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141706320","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-07-01DOI: 10.3367/ufne.2024.07.039710
{"title":"90th anniversary of the Lebedev Physics Institute of the Russian Academy of Sciences (LPI)","authors":"","doi":"10.3367/ufne.2024.07.039710","DOIUrl":"https://doi.org/10.3367/ufne.2024.07.039710","url":null,"abstract":"","PeriodicalId":20068,"journal":{"name":"Physics-Uspekhi","volume":null,"pages":null},"PeriodicalIF":3.1,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141695312","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-06-01DOI: 10.3367/ufne.2024.06.039692
Roman A. Khmelnitsky, Nikolay B. Rodionov, Alexander G. Trapeznikov, V. P. Yartsev, Valentina P. Rodionova, Alexey N. Kirichenko, A. V. Krasilnikov
{"title":"Challenges of homoepitaxial diamond growth by CVD method and ways to solve problems","authors":"Roman A. Khmelnitsky, Nikolay B. Rodionov, Alexander G. Trapeznikov, V. P. Yartsev, Valentina P. Rodionova, Alexey N. Kirichenko, A. V. Krasilnikov","doi":"10.3367/ufne.2024.06.039692","DOIUrl":"https://doi.org/10.3367/ufne.2024.06.039692","url":null,"abstract":"","PeriodicalId":20068,"journal":{"name":"Physics-Uspekhi","volume":null,"pages":null},"PeriodicalIF":2.7,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141411139","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-05-01DOI: 10.3367/ufne.2024.05.039680
{"title":"In memory of Vladimir Moiseevich Arganovich","authors":"","doi":"10.3367/ufne.2024.05.039680","DOIUrl":"https://doi.org/10.3367/ufne.2024.05.039680","url":null,"abstract":"","PeriodicalId":20068,"journal":{"name":"Physics-Uspekhi","volume":null,"pages":null},"PeriodicalIF":2.7,"publicationDate":"2024-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141030788","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-05-01DOI: 10.3367/ufne.2024.05.039678
D. Provorchenko, D. Tregubov, A. Golovizin, Nikolai N. Kolachevsky
{"title":"Laser cooling of thulium atoms to the ground state in optical lattice","authors":"D. Provorchenko, D. Tregubov, A. Golovizin, Nikolai N. Kolachevsky","doi":"10.3367/ufne.2024.05.039678","DOIUrl":"https://doi.org/10.3367/ufne.2024.05.039678","url":null,"abstract":"","PeriodicalId":20068,"journal":{"name":"Physics-Uspekhi","volume":null,"pages":null},"PeriodicalIF":2.7,"publicationDate":"2024-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141042090","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-03-01DOI: 10.3367/ufne.2024.03.039670
{"title":"Vasilii Petrovich Neznamov (on his 80th birthday)","authors":"","doi":"10.3367/ufne.2024.03.039670","DOIUrl":"https://doi.org/10.3367/ufne.2024.03.039670","url":null,"abstract":"","PeriodicalId":20068,"journal":{"name":"Physics-Uspekhi","volume":null,"pages":null},"PeriodicalIF":2.7,"publicationDate":"2024-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140401024","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-02-01DOI: 10.3367/ufne.2024.02.039652
D. V. Kazantsev, E. A. Kazantseva
{"title":"Scattering type apertureless scaning near-field optical microscopy","authors":"D. V. Kazantsev, E. A. Kazantseva","doi":"10.3367/ufne.2024.02.039652","DOIUrl":"https://doi.org/10.3367/ufne.2024.02.039652","url":null,"abstract":"","PeriodicalId":20068,"journal":{"name":"Physics-Uspekhi","volume":null,"pages":null},"PeriodicalIF":2.7,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140465271","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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