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- Title
Single-domain stripe order in a high-temperature superconductor.
- Authors
Simutis, Gediminas; Küspert, Julia; Wang, Qisi; Choi, Jaewon; Bucher, Damian; Boehm, Martin; Bourdarot, Frédéric; Bertelsen, Mads; Wang, Chennan N; Kurosawa, Tohru; Momono, Naoki; Oda, Migaku; Månsson, Martin; Sassa, Yasmine; Janoschek, Marc; Christensen, Niels B.; Chang, Johan; Mazzone, Daniel G.
- Abstract
The coupling of spin, charge and lattice degrees of freedom results in the emergence of novel states of matter across many classes of strongly correlated electron materials. A model example is unconventional superconductivity, which is widely believed to arise from the coupling of electrons via spin excitations. In cuprate high-temperature superconductors, the interplay of charge and spin degrees of freedom is also reflected in a zoo of charge and spin-density wave orders that are intertwined with superconductivity. A key question is whether the different types of density waves merely coexist or are indeed directly coupled. Here we profit from a neutron scattering technique with superior beam-focusing that allows us to probe the subtle spin-density wave order in the prototypical high-temperature superconductor La 1.88 Sr 0.12 CuO 4 under applied uniaxial pressure to demonstrate that the two density waves respond to the external tuning parameter in the same manner. Our result shows that suitable models for high-temperature superconductivity must equally account for charge and spin degrees of freedom via uniaxial charge-spin stripe fluctuations. While it is widely believed that high-temperature superconductivity in cuprate materials arises from an intertwined interplay between charge and spin fluctuations, the microscopic coupling between charge and spin degrees of freedom still remains a mystery in these materials. Here, the authors profit from neutron scattering with superior beam focusing to probe the subtle spin-density wave order under uniaxial pressure, and demonstrate that charge and spin orders respond to the external tuning parameter in the same manner.
- Subjects
SPIN excitations; DEGREES of freedom; CUPRATES; PHASES of matter; NEUTRON scattering; HIGH temperature superconductors; ELECTRON spin
- Publication
Communications Physics, 2022, Vol 5, Issue 1, p1
- ISSN
2399-3650
- Publication type
Academic Journal
- DOI
10.1038/s42005-022-01061-4