2013/09/30 by Zhijun Xu, Christian Stock, C. Stock +6
Materials Science · Physics and Astronomy · #Advanced Condensed Matter Physics #Magnetic and transport properties of perovskites and related materials #Physics of Superconductivity and Magnetism #cond-mat.supr-con
paper · pdf · doi:10.1103/physrevlett.113.177002
published as Phys. Rev. Lett. 113, 177002 (2014) · 5 pages, 3 figures, plus 2 pages of supplemental material; version accepted for publication in PRL
arxiv created 2014/09/30 · openalex publication_date 2014/10/21 · arxiv updated 2014/10/23 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/04
The role of antiferromagnetic spin correlations in high-temperature superconductors remains a matter of debate. We present inelastic neutron-scattering evidence that gapless spin fluctuations coexist with superconductivity in La1.905Ba0.095CuO4. Furthermore, we observe that both the low-energy magnetic spectral weight and the spin incommensurability are enhanced with the onset of superconducting correlations. We propose that the coexistence occurs through intertwining of spatial modulations of the pair wave function and the antiferromagnetic correlations. This proposal is also directly relevant to sufficiently underdoped La(2-x)Sr(x)CuO(4) and YBa(2)Cu(3)O(6+x).