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  Nematicity in the superconducting mixed state of strain detwinned underdoped Ba(Fe1-xCox)2As2

Schmidt, J., Bekeris, V., Lozano, G. S., Bortule V, M., Marziali Bermudez, M., Hicks, C. W., et al. (2019). Nematicity in the superconducting mixed state of strain detwinned underdoped Ba(Fe1-xCox)2As2. Physical Review B, 99(6): 064515, pp. 1-9. doi:10.1103/PhysRevB.99.064515.

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Schmidt, J.1, Author
Bekeris, V1, Author
Lozano, G. S.1, Author
Bortule V, M.1, Author
Marziali Bermudez, M.1, Author
Hicks, C. W.2, Author           
Canfield, P. C.1, Author
Fradkin, E.1, Author
Pasquini, G.1, Author
Affiliations:
1External Organizations, ou_persistent22              
2Clifford Hicks, Physics of Quantum Materials, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863466              

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 Abstract: Evidence of nematic effects in the mixed superconducting phase of slightly underdoped Ba(Fe1-xCox)(2)As-2 is reported. We have found strong in-plane resistivity anisotropy for crystals in different strain conditions. For these compositions, there is no magnetic long-range order, so the description may be ascribed to the interplay between the superconducting and nematic order parameters. A piezoelectric-based apparatus is used to apply tensile or compressive strain to tune nematic domain orientation in order to examine intrinsic nematicity. Measurements are done under a rotating magnetic field, and the analysis of the angular dependence of physical quantities identifies the cases in which the sample is detwinned. Furthermore, the angular dependence of the data allows us to evaluate the effects of nematicity on the in-plane superconductor stiffness. Our results show that although nematicity contributes in a decisive way to the conduction properties, its contributions to the anisotropy properties of the stiffness of the superconducting order parameter is not as significant in these samples.

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Language(s): eng - English
 Dates: 2019-02-282019-02-28
 Publication Status: Issued
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Title: Physical Review B
  Abbreviation : Phys. Rev. B
Source Genre: Journal
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Publ. Info: Woodbury, NY : American Physical Society
Pages: - Volume / Issue: 99 (6) Sequence Number: 064515 Start / End Page: 1 - 9 Identifier: ISSN: 1098-0121
CoNE: https://pure.mpg.de/cone/journals/resource/954925225008