Terahertz conductivity in FeSe0.5Te0.5 superconducting films

New Journal of Physics

Volumn 15, Issue , 2013, Pages

  Pimenov, A ^a   Engelbrecht, S ^a   Shuvaev, A M ^a   Jin, B B ^b   Wu, P H ^b   Xu, B ^c   Cao, L X ^c   Schachinger, E ^d  

^a VIENNA UNIVERSITY OF TECHNOLOGY   (Austria)

^b NANJING UNIVERSITY   (China)

^c INSTITUTE OF PHYSICS   (China)

^d GRAZ UNIVERSITY OF TECHNOLOGY   (Austria)

Author keywords

[No Author keywords available]

Indexed keywords

ANISOTROPIC GAP; COMPLEX CONDUCTIVITY; MODEL-BASED OPC; NORMAL-STATE CONDUCTIVITY; ORDER PARAMETER; REAL PART; SUPERCONDUCTING GAPS; SUPERCONDUCTING STATE; TERA HERTZ; TERAHERTZ FREQUENCY RANGE;

PHYSICS; RESEARCH;

SUPERCONDUCTING FILMS;

EID: 84873389777     PISSN: 13672630     EISSN: None     Source Type: Journal    
DOI: 10.1088/1367-2630/15/1/013032     Document Type: Article

References (61)

1. Paglione J, Richard L and Greene 2010 High-temperature superconductivity in iron-based materials Nature Phys. 6 645-58
2. Stewart G R 2011 Superconductivity in iron compounds Rev. Mod. Phys. 83 1589-652
3. Basov D N and Chubukov A V 2011 Manifesto for a higher t(c) Nature Phys. 7 272-6
4. c = 26 K J. Am. Chem. Soc. 130 3296-7 (Pubitemid 351456027)
5. Hirschfeld P J, Korshunov M M and Mazin I I 2011 Gap symmetry and structure of Fe-based superconductors Rep. Prog. Phys. 74 124508
6. Wang F and Lee D-H 2011 The electron-pairing mechanism of iron-based superconductors Science 332 200-4
7. Inosov D S, Park J T, Charnukha A, Li Y, Boris A V, Keimer B and Hinkov V 2011 Crossover from weak to strong pairing in unconventional superconductors Phys. Rev. B 83 214520
8. Damascelli A, Hussain Z and Shen Z X 2003 Angle-resolved photoemission studies of the cuprate superconductors Rev. Mod. Phys. 75 473-541 (Pubitemid 36737414)
9. 0.3 )(2) Nature Phys. 8 371-5
10. Hsu F-C et al 2008 Superconductivity in the PbO-type structure α-FeSe. Proc. Natl Acad. Sci. USA 105 14262-4
11. Fang M H, Pham H M, Qian B, Liu T J, Vehstedt E K, Liu Y, Spinu L and Mao Z Q 2008 Phys. Rev. B 78 224503
12. Li Q, Si W and Dimitrov I K 2011 Films of iron chalcogenide superconductors Rep. Prog. Phys. 74 124510
13. (0.55) revealed by angle-resolved specific heat Nature Commun. 1 112
14. Lin J-Y, Hsieh Y S, Chareev D A, Vasiliev A N, Parsons Y and Yang H D 2011 Coexistence of isotropic and extended s-wave order parameters in FeSe as revealed by low-temperature specific heat Phys. Rev. B 84 220507
15. Song C-L et al 2011 Direct observation of nodes and twofold symmetry in FeSe superconductor Science 332 1410-3
16. 0.85 from a muon-spin-rotation study of the in-plane magnetic penetration depth Phys. Rev. B 78 220510
17. Kato T, Mizuguchi Y, Nakamura H, Machida T, Sakata H and Takano Y 2009 Phys. Rev. B 80
18. Noat Y, Cren T, Dubost V, Lange S, Debontridder F, Toulemonde P, Marcus J, Sulpice A, Sacks W and Roditchev D 2010 Disorder effects in pnictides: a tunneling spectroscopy study J. Phys.: Condens. Matter 22 465701
19. Hanaguri T, Niitaka S, Kuroki K and Takagi H 2010 Unconventional s-wave superconductivity in Fe(Se,Te) Science 328 474-6
20. 0.45 J. Phys. Chem. Solids 72 505-10
21. 0.45 Phys. Rev. B 85 094506
22. Mishra V, Boyd G, Graser S, Maier T, Hirschfeld P J and Scalapino D J 2009 Lifting of nodes by disorder in extended-s-state superconductors: application to ferropnictides Phys. Rev. B 79 094512
23. Carbotte J P and Schachinger E 2010 Optical conductivity in ferropnictides with and without gap nodes Phys. Rev. B 81 104510
24. 0.45 Phys. Rev. B 81 180508
25. Hu W Z, Zhang Q M and Wang N L 2009 Optical and Raman spectroscopy studies on Fe-based superconductors Physica C 469 545-58
26. 2 single crystals Phys. Rev. B 84 174511
27. 2 Europhys. Lett. 90 37005
28. 2:optical spectroscopic and density-functional calculation study Phys. Rev. B 81 205114
29. Perucchi A et al 2010 Eur. Phys. J. B 77 25-30
30. 2 Phys. Rev. B 82 174509
31. 2 from infrared spectroscopy Phys. Rev. B 81 214508
32. 2:an s-wave superconductor with strong interband interactions Phys. Rev. B 83 100503
33. Valdés Aguilar R, Bilbro L S, Lee S, Bark C W, Jiang J, Weiss J D, Hellstrom E E, Larbalestier D C, Eom C B and Armitage N P 2010 Phys. Rev. B 82 180514
34. Wu D et al 2010 Optical investigations of the normal and superconducting states reveal two electronic subsystems in iron pnictides Phys. Rev. B 81 100512
35. 2 from optical conductivity measurements Phys. Rev. B 82 224507
36. 2 Phys. Rev. B 81 060509
37. 2 superconductors: evidence for a disorder-dependent superfluid density Phys. Rev. Lett. 102 207001
38. Lobo R P S M, Dai Y M, Nagel U, Rõõm T, Carbotte J P, Timusk T, Forget A and Colson D 2010 Phys. Rev. B 82 100506
39. Nakajima M et al 2010 Phys. Rev. B 81 104528
40. 2 thin films Physica C 471 634-8
41. Schachinger E and Carbotte J P 2011 Finite-temperature signatures of gap anisotropy in optical conductivity of ferropnictides Phys. Rev. B 84 134522
42. 0.70 Phys. Rev. B 79 140509
43. 0.45 superconductor from infrared spectroscopy Phys. Rev. Lett. 106 217001
44. Han Y, Li W Y, Cao L X, Wang X Y, Xu B, Zhao B R, Guo Y Q and Yang J L 2010 Superconductivity in iron telluride thin films under tensile stress Phys. Rev. Lett. 104 017003
45. Cao L X 2013 submitted
46. Nie Y F, Brahimi E, Budnick J I, Hines W A, Jain M and Wells B O 2009 Suppression of superconductivity in FeSe films under tensile strain Appl. Phys. Lett. 94 242505
47. Han Y, Li W Y, Cao L X, Zhang S, Xu B and Zhao B R 2009 Preparation and superconductivity of iron selenide thin films J. Phys.: Condens. Matter 21 235702
48. Volkov A A, Goncharov Yu G, Kozlov G V, Lebedev S P and Prokhorov A M 1985 Dielectric measurements in the submillimeter wavelength region Infrared Phys. 25 369
49. Pimenov A, Tachos S, Rudolf T, Loidl A, Schrupp D, Sing M, Claessen R and Brabers V A M 2005 Terahertz conductivity at the Verwey transition in magnetite Phys. Rev. B 72 035131 (Pubitemid 41506699)
50. Palik E D and Furdyna J K 1970 Infrared and microwave magnetoplasma effects in semiconductors Rep. Prog. Phys. 33 1193
51. Shuvaev A M, Astakhov G V, Pimenov A, Brüne C, Buhmann H and Molenkamp L W 2011 Giant magneto-optical Faraday effect in HgTe thin films in the terahertz spectral range Phys. Rev. Lett. 106 107404
52. 0.58 superconductor observed by angle-resolved photoemission spectroscopy Phys. Rev. Lett. 104 097002
53. Chubukov A V, Vavilov M G and Vorontsov A B 2009 Momentum dependence and nodes of the superconducting gap in the iron pnictides Phys. Rev. B 80 140515
54. 2 Phys. Rev. B 80 174526
55. Marsiglio F and Carbotte J P 1997 Aspects of optical properties in conventional and oxide superconductors Aust. J. Phys. 50 975-1009 (Pubitemid 127583649)
56. 6.95 Phys. Rev. B 47 11314-28
57. c superconductors Rev. Mod. Phys. 77 721-79 (Pubitemid 41508766)
58. 0.34 Phys. Rev. B 81 014526
59. Schürrer I, Schachinger E and Carbotte J P 1998 Optical conductivity of superconductors with mixed symmetry order parameters Physica C 303 287-310 (Pubitemid 128412512)
60. c oxides Phys. Rev. B 36 5245-50
61. Marsiglio F, Akis R and Carbotte J P 1992 Phonon self-energy effects due to superconductivity: a real-axis formulation Phys. Rev. B 45 9865-71