Issues

 / 

2017

 / 

April

  

On the 100th anniversary of the birth of V.L. Ginzburg. Conferences and symposia


On the structure of the superconducting order parameter in high-temperature Fe-based superconductors

 a, b,  b,  a, b, c,  b,  b,  b,  b,  b, d,  b,  b, e
a Lomonosov Moscow State University, Faculty of Physics, Leninskie Gory 1 build. 2, Moscow, 119991, Russian Federation
b Lebedev Physical Institute, Russian Academy of Sciences, Leninsky prosp. 53, Moscow, 119991, Russian Federation
c Lomonosov Moscow State University, Vorobevy Gory, Moscow, 119991, Russian Federation
d International Laboratory of High Magnetic Fields and Low Temperatures, Gajowicka str. 95, Wroclaw, 53-421, Poland
e HSE University, ul. Myasnitskaya 20, Moscow, 101000, Russian Federation

This paper discusses the synthesis, characterization, and comprehensive study of Ba-122 single crystals with various substitutions and various Tc's. The paper uses five complementary techniques to obtain a self-consistent set of data on the superconducting properties of Ba-122. A major conclusion of the authors work is the coexistence of two superconducting condensates differing in the electron-boson coupling strength. The two gaps that develop in distinct Fermi surface sheets are nodeless in the kxky-plane and exhibit s-wave symmetry, the two-band model represents a sufficient data description tool. A moderate interband coupling and a considerable Coulomb repulsion in the description of the two-gap superconducting state of barium pnictides favor the s++-model.

Fulltext pdf (862 KB)
Fulltext is also available at DOI: 10.3367/UFNe.2016.10.038002
Keywords: multi-gap superconductors, iron pnictides, specific heat, London penetration depth, Andreev spectroscopy, optics
PACS: 74.25.−q, 74.25.nd, 74.25.Ha, 74.45.+c, 74.70.Xa (all)
DOI: 10.3367/UFNe.2016.10.038002
URL: https://ufn.ru/en/articles/2017/4/g/
000405325500007
2-s2.0-85025159254
2017PhyU...60..419K
Citation: Kuzmicheva T E, Muratov A V, Kuzmichev S A, Sadakov A V, Aleshenko Yu A, Vlasenko V A, Martovitsky V P, Pervakov K S, Eltsev Yu F, Pudalov V M "On the structure of the superconducting order parameter in high-temperature Fe-based superconductors" Phys. Usp. 60 419–429 (2017)
BibTexBibNote ® (generic)BibNote ® (RIS)MedlineRefWorks

Received: 7th, December 2016, 5th, October 2016

Оригинал: Кузьмичёва Т Е, Муратов А В, Кузьмичёв С А, Садаков А В, Алещенко Ю А, Власенко В А, Мартовицкий В П, Перваков К С, Ельцев Ю Ф, Пудалов В М «О структуре параметра порядка в высокотемпературных сверхпроводниках на основе железа» УФН 187 450–462 (2017); DOI: 10.3367/UFNr.2016.10.038002

References (82) Cited by (16) ↓ Similar articles (2)

  1. Sadakov A V, Gippius A A et al Jetp Lett. 119 111 (2024)
  2. Kidanemariam T, Kahsay G Eur. Phys. J. B 96 (11) (2023)
  3. Usoltsev A S, Sadakov A V et al SN Appl. Sci. 4 (6) (2022)
  4. Karakozov A E, Magnitskaya M V J. Surf. Investig. 15 S145 (2021)
  5. Kuzmicheva T E, Kuzmichev S A et al Phys. Rev. B 104 (17) (2021)
  6. Vlasenko V, Pervakov K, Gavrilkin S Supercond. Sci. Technol. 33 084009 (2020)
  7. Kuzmicheva T E, Kuzmichev S A et al Jetp Lett. 111 350 (2020)
  8. Maltsev E I, Vlasenko V A et al Jetp Lett. 111 403 (2020)
  9. Kuzmicheva T E, Kuzmichev S A et al Jetp Lett. 112 786 (2020)
  10. Bioletti G, Williams G V M et al Supercond. Sci. Technol. 32 064001 (2019)
  11. Karakozov A E, Magnitskaya M V et al Phys. Rev. B 99 (5) (2019)
  12. Vlasenko V A, Pervakov K S et al IEEE Trans. Appl. Supercond. 29 1 (2019)
  13. Bezotosnyi P I, Dmitrieva K A et al Phys. Rev. B 100 (18) (2019)
  14. Korshunov M M Phys. Rev. B 98 (10) (2018)
  15. Kuzmicheva T E, Kuzmichev S A et al Jetp Lett. 107 42 (2018)
  16. Drechsler S-L, Johnston S et al Phys. Status Solidi B 254 1700006 (2017)

© 1918–2024 Uspekhi Fizicheskikh Nauk
Email: ufn@ufn.ru Editorial office contacts About the journal Terms and conditions