Nematic-Fluctuation-Mediated Superconductivity Revealed by Anisotropic Strain in Ba(Fe1-xCox )2As2

被引：1
|
作者：
Philippe, Jean-Come [1 ]
Lespinas, Alexis [1 ]
Faria, Jimmy [1 ]
Forget, Anne [2 ]
Colson, Dorothee [2 ]
Houver, Sarah [1 ]
Cazayous, Maximilien [1 ]
Sacuto, Alain [1 ]
Paul, Indranil [1 ]
Gallais, Yann [1 ]
机构：
[1] Univ Paris Cite, Mat & Phinomenes Quant, UMR CNRS 7162, Batiment Condorcet, F-75205 Paris 13, France
[2] CEA Saclay, DSM DRECAM SPEC, Serv Phys Etat Condense, F-91191 Gif Sur Yvette, France
来源：
PHYSICAL REVIEW LETTERS | 2022年 / 129卷 / 18期
关键词：
QUANTUM CRITICAL-POINT; SUSCEPTIBILITY; CRITICALITY; ORDER;
D O I：
10.1103/PhysRevLett.129.187002
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
Anisotropic strain is an external field capable of selectively addressing the role of nematic fluctuations in promoting superconductivity. We demonstrate this using polarization-resolved elasto-Raman scattering by probing the evolution of nematic fluctuations under strain in the normal and superconducting state of the paradigmatic iron-based superconductor a(Fe1 - xCox )(2)As-2 . In the parent compound BaFe2As2 we observe a strain-induced suppression of the nematic susceptibility which follows the expected behavior of an Ising order parameter under a symmetry breaking field. For the superconducting compound, the suppression of the nematic susceptibility correlates with the decrease of the critical temperature T-c, indicating a significant contribution of nematic fluctuations to electron pairing. Our results validate theoretical scenarios of enhanced T-c near a nematic quantum critical point.
引用
收藏
页数：6
相关论文
共 29 条
  • [1] Nematic magnetoelastic effect contrasted between Ba(Fe1-xCox)2As2 and FeSe
    Hu, Yuwen
    Ren, Xiao
    Zhang, Rui
    Luo, Huiqian
    Kasahara, Shigeru
    Watashige, Tatsuya
    Shibauchi, Takasada
    Dai, Pengcheng
    Zhang, Yan
    Matsuda, Yuji
    Li, Yuan
    PHYSICAL REVIEW B, 2016, 93 (06)
  • [2] Nematic-driven anisotropic electronic properties of underdoped detwinned Ba(Fe1-xCox)2As2 revealed by optical spectroscopy
    Mirri, C.
    Dusza, A.
    Bastelberger, S.
    Chu, J. -H.
    Kuo, H. -H.
    Fisher, I. R.
    Degiorgi, L.
    PHYSICAL REVIEW B, 2014, 90 (15):
  • [3] Superconductivity near a quantum critical point in Ba(Fe1-xCox)2As2
    Ahilan, K.
    Ning, F. L.
    Imai, T.
    Sefat, A. S.
    McGuire, M. A.
    Sales, B. C.
    Mandrus, D.
    Cheng, P.
    Shen, B.
    Wen, H. -H.
    PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS, 2010, 470 : S273 - S275
  • [4] NMR study of nematic spin fluctuations in a detwinned single crystal of underdoped Ba(Fe1-xCox)2As2
    Kissikov, T.
    Dioguardi, A. P.
    Timmons, E. I.
    Tanatar, M. A.
    Prozorov, R.
    Bud'ko, S. L.
    Canfield, P. C.
    Fernandes, R. M.
    Curro, N. J.
    PHYSICAL REVIEW B, 2016, 94 (16)
  • [5] Slow tail of nematic spin fluctuations in Ba(Fe1-xCox)2As2: Insight from nuclear magnetic resonance
    Ansari, Jaafar N.
    Sauer, Karen L.
    Mazin, Igor I.
    PHYSICAL REVIEW B, 2023, 108 (06)
  • [6] Critical speeding up of nonequilibrium electronic relaxation near nematic phase transition in unstrained Ba(Fe1-xCox)2As2
    Patz, A.
    Li, T.
    Luo, L.
    Yang, X.
    Bud'ko, S.
    Canfield, P. C.
    Perakis, I. E.
    Wang, J.
    PHYSICAL REVIEW B, 2017, 95 (16)
  • [7] A study of temperature dependent local atomic displacements in a Ba(Fe1-xCox)2As2 superconductor
    Hacisalihoglu, M. Y.
    Paris, E.
    Joseph, B.
    Simonelli, L.
    Sato, T. J.
    Mizokawa, T.
    Saini, N. L.
    PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 2016, 18 (13) : 9029 - 9035
  • [8] Universality and unconventional enhancement of flux-flow resistivity in Ba(Fe1-xCox)2As2
    Huang, X. Y.
    Haney, D. J.
    Singh, Y. P.
    Hu, T.
    Xiao, H.
    Wen, Hai-Hu
    Dzero, M.
    Almasan, C. C.
    PHYSICAL REVIEW B, 2017, 95 (18)
  • [9] Spin fluctuation anisotropy as a probe of orbital-selective hole-electron quasiparticle excitations in detwinned Ba(Fe1-xCox)2As2
    Tian, Long
    Liu, Panpan
    Xu, Zhuang
    Li, Yu
    Lu, Zhilun
    Walker, H. C.
    Stuhr, U.
    Tan, Guotai
    Lu, Xingye
    Dai, Pengcheng
    PHYSICAL REVIEW B, 2019, 100 (13)
  • [10] Magnetic neutron diffraction study of Ba(Fe1-xCox)2As2 critical exponents through the tricritical doping
    Pajerowski, D. M.
    Rotundu, C. R.
    Lynn, J. W.
    Birgeneau, R. J.
    PHYSICAL REVIEW B, 2013, 87 (13):
123