Details

Autor(en) / Beteiligte

• Guguchia, Z.
• Das, D.
• Wang, C. N.
• Adachi, T.
• Kitajima, N.
• Elender, M.
• Brückner, F.
• Ghosh, S.
• Grinenko, V.
• Shiroka, T.
• Müller, M.
• Mudry, C.
• Baines, C.
• Bartkowiak, M.
• Koike, Y.
• Amato, A.
• Tranquada, J. M.
• Klauss, H.-H.
• Hicks, C. W.
• Luetkens, H.

Titel

Using Uniaxial Stress to Probe the Relationship between Competing Superconducting States in a Cuprate with Spin-stripe Order

Ist Teil von

• Physical review letters, 2020-08, Vol.125 (9), p.1-097005, Article 097005

Ort / Verlag

College Park: American Physical Society

Erscheinungsjahr

2020

Quelle

American Physical Society Journals

Beschreibungen/Notizen

• We report muon spin rotation and magnetic susceptibility experiments on in-plane stress effects on the static spin-stripe order and superconductivity in the cuprate system La2−xBaxCuO4 with x=0.115. An extremely low uniaxial stress of ∼0.1  GPa induces a substantial decrease in the magnetic volume fraction and a dramatic rise in the onset of 3D superconductivity, from ∼10 to 32 K; however, the onset of at-least-2D superconductivity is much less sensitive to stress. These results show not only that large-volume-fraction spin-stripe order is anticorrelated with 3D superconducting coherence but also that these states are energetically very finely balanced. Moreover, the onset temperatures of 3D superconductivity and spin-stripe order are very similar in the large stress regime. These results strongly suggest a similar pairing mechanism for spin-stripe order and the spatially modulated 2D and uniform 3D superconducting orders, imposing an important constraint on theoretical models.