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Choi, J; Wang, Q; Jöhr, S; Christensen, N B; Küspert, J; Bucher, D; Biscette, D; Fischer, M H; Hücker, M; Kurosawa, T; Momono, N; Oda, M; Ivashko, O; Zimmermann, M V; Janoschek, M; Chang, J
Physical review letters, 05/2022, Volume: 128, Issue: 20Journal Article
In the cuprates, high-temperature superconductivity, spin-density-wave order, and charge-density-wave (CDW) order are intertwined, and symmetry determination is challenging due to domain formation. We investigated the CDW in the prototypical cuprate La_{1.88}Sr_{0.12}CuO_{4} via x-ray diffraction employing uniaxial pressure as a domain-selective stimulus to establish the unidirectional nature of the CDW unambiguously. A fivefold enhancement of the CDW amplitude is found when homogeneous superconductivity is partially suppressed by magnetic field. This field-induced state provides an ideal search environment for a putative pair-density-wave state.
