@article{f5cb3433049f4774a765866c0d90be6b,
title = "Nematicity in the superconducting mixed state of strain detwinned underdoped Ba(Fe1-xCox)2As2",
abstract = "Evidence of nematic effects in the mixed superconducting phase of slightly underdoped Ba(Fe1-xCox)2As2 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.",
author = "J. Schmidt and V. Bekeris and Lozano, \{G. S.\} and Bortul{\'e}, \{M. V.\} and Berm{\'u}dez, \{M. Marziali\} and Hicks, \{C. W.\} and Canfield, \{P. C.\} and E. Fradkin and G. Pasquini",
note = "We would like to acknowledge N. Ni for initial growth of these samples. The authors are especially grateful to S. Grigera, R. Borzi, and A. Mackenzie for providing the strain apparatus used in the reported experiments and for technical support as well as for useful discussions. We also thank M. Barber for providing us accessories and useful tips and M. Rodr\textbackslash{}u00EDguez and F. Di Salvo for facilitating the x-ray characterization. This work was partially supported by CONICET and Universidad de Buenos Aires and the U.S. National Science Foundation through Grant No. DMR 1725401 at the University of Illinois (E.F.). Work done at Ames Laboratory (P.C.C.) was supported by the U.S. Department of Energy, Office of Basic Energy Science, Division of Materials Sciences and Engineering. Ames Laboratory is operated for the U.S. Department of Energy by Iowa State University under Contract No. DE-AC02-07CH11358. E.F. thanks the Department of Physics of the Universidad de Buenos Aires for its hospitality. This work was partially supported by CONICET and Universidad de Buenos Aires and the U.S. National Science Foundation through Grant No. DMR 1725401 at the University of Illinois (E.F.). Work done at Ames Laboratory (P.C.C.) was supported by the U.S. Department of Energy, Office of Basic Energy Science, Division of Materials Sciences and Engineering. Ames Laboratory is operated for the U.S. Department of Energy by Iowa State University under Contract No. DE-AC02-07CH11358. E.F. thanks the Department of Physics of the Universidad de Buenos Aires for its hospitality.",
year = "2019",
month = feb,
day = "28",
doi = "10.1103/PhysRevB.99.064515",
language = "English (US)",
volume = "99",
journal = "Physical Review B",
issn = "2469-9950",
publisher = "American Physical Society",
number = "6",
}