T. E. Kuzmicheva, S. A. Kuzmichev, Ye. O. Rakhmanov, I. V. Morozov
{"title":"利用隧道和安德列夫光谱测定 K0.8Fe1.7(Se0.72S0.28)2 的单隙超导性","authors":"T. E. Kuzmicheva, S. A. Kuzmichev, Ye. O. Rakhmanov, I. V. Morozov","doi":"10.3103/S1068335624600839","DOIUrl":null,"url":null,"abstract":"<p>For the first time, using tunneling and Andreev spectroscopies of planar break-junctions, we have studied the properties of the superconducting subsystem of K<sub>0.8</sub>Fe<sub>1.7</sub>(Se<sub>0.72</sub>S<sub>0.28</sub>)<sub>2</sub> iron selenide single crystals with a natural phase separation. We have directly determined its energy characteristics: the magnitude of the superconducting order parameter Δ(0), and its characteristic ratio 2Δ(0)/<i>k</i><sub>B</sub><i>T</i><sub>c</sub>. The obtained temperature behavior of the critical current <i>I</i><sub>c</sub>(<i>T</i>)/<i>I</i><sub>c</sub>(0) could be fitted with Ambegaokar-Baratoff formula using the experimental 2Δ(0)/<i>k</i><sub>B</sub><i>T</i><sub>c</sub> value.</p>","PeriodicalId":503,"journal":{"name":"Bulletin of the Lebedev Physics Institute","volume":"51 8","pages":"278 - 283"},"PeriodicalIF":0.6000,"publicationDate":"2024-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Single-Gap Superconductivity of K0.8Fe1.7(Se0.72S0.28)2 Determined Using Tunneling and Andreev Spectroscopy\",\"authors\":\"T. E. Kuzmicheva, S. A. Kuzmichev, Ye. O. Rakhmanov, I. V. Morozov\",\"doi\":\"10.3103/S1068335624600839\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p>For the first time, using tunneling and Andreev spectroscopies of planar break-junctions, we have studied the properties of the superconducting subsystem of K<sub>0.8</sub>Fe<sub>1.7</sub>(Se<sub>0.72</sub>S<sub>0.28</sub>)<sub>2</sub> iron selenide single crystals with a natural phase separation. We have directly determined its energy characteristics: the magnitude of the superconducting order parameter Δ(0), and its characteristic ratio 2Δ(0)/<i>k</i><sub>B</sub><i>T</i><sub>c</sub>. The obtained temperature behavior of the critical current <i>I</i><sub>c</sub>(<i>T</i>)/<i>I</i><sub>c</sub>(0) could be fitted with Ambegaokar-Baratoff formula using the experimental 2Δ(0)/<i>k</i><sub>B</sub><i>T</i><sub>c</sub> value.</p>\",\"PeriodicalId\":503,\"journal\":{\"name\":\"Bulletin of the Lebedev Physics Institute\",\"volume\":\"51 8\",\"pages\":\"278 - 283\"},\"PeriodicalIF\":0.6000,\"publicationDate\":\"2024-09-25\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Bulletin of the Lebedev Physics Institute\",\"FirstCategoryId\":\"101\",\"ListUrlMain\":\"https://link.springer.com/article/10.3103/S1068335624600839\",\"RegionNum\":4,\"RegionCategory\":\"物理与天体物理\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q4\",\"JCRName\":\"PHYSICS, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Bulletin of the Lebedev Physics Institute","FirstCategoryId":"101","ListUrlMain":"https://link.springer.com/article/10.3103/S1068335624600839","RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"PHYSICS, MULTIDISCIPLINARY","Score":null,"Total":0}
Single-Gap Superconductivity of K0.8Fe1.7(Se0.72S0.28)2 Determined Using Tunneling and Andreev Spectroscopy
For the first time, using tunneling and Andreev spectroscopies of planar break-junctions, we have studied the properties of the superconducting subsystem of K0.8Fe1.7(Se0.72S0.28)2 iron selenide single crystals with a natural phase separation. We have directly determined its energy characteristics: the magnitude of the superconducting order parameter Δ(0), and its characteristic ratio 2Δ(0)/kBTc. The obtained temperature behavior of the critical current Ic(T)/Ic(0) could be fitted with Ambegaokar-Baratoff formula using the experimental 2Δ(0)/kBTc value.
期刊介绍：
Bulletin of the Lebedev Physics Institute is an international peer reviewed journal that publishes results of new original experimental and theoretical studies on all topics of physics: theoretical physics; atomic and molecular physics; nuclear physics; optics; lasers; condensed matter; physics of solids; biophysics, and others.
京公网安备 11010802042870号
京ICP备2023020795号-1
分享
求助内容：
应助结果提醒方式：
扫码关注我们
