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Designing the stripe-ordered cuprate phase diagram through uniaxial-stress

Journal Article · · Proceedings of the National Academy of Sciences of the United States of America
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  1. Paul Scherrer Inst., Villigen (Switzerland). Lab. for Muon Spin Spectroscopy
  2. Sophia University, Tokyo (Japan)
  3. Univ. of Zurich (Switzerland)
  4. Tohoku Univ., Sendai (Japan)
  5. Shanghai Jiao Tong Univ. (China)
  6. Deutsches Elektronen-Synchrotron (DESY), Hamburg (Germany)
  7. Paul Scherrer Inst., Villigen (Switzerland). Condensed Matter Theory Group
  8. Paul Scherrer Inst., Villigen (Switzerland). Condensed Matter Theory Group; Ecole Polytechnique Federale Lausanne (EPFL) (Switzerland)
  9. Paul Scherrer Inst., Villigen (Switzerland). Lab. for Muon Spin Spectroscopy; Eidgenoessische Technische Hochschule (ETH), Zurich (Switzerland)
  10. Max Planck Institute for Chemical Physics of Solids, Dresden (Germany); Univ. of Birmingham (United Kingdom)
  11. Brookhaven National Laboratory (BNL), Upton, NY (United States)
  12. Technische Universität Dresden (Germany)
  13. Paul Scherrer Inst., Villigen (Switzerland). Lab. for Muon Spin Spectroscopy; Univ. of Zurich (Switzerland)
+ Show Author Affiliations

The ability to efficiently control charge and spin in the cuprate high-temperature superconductors is crucial for fundamental research and underpins technological development. Here, we explore the tunability of magnetism, superconductivity and crystal structure in the stripe phase of the cuprate La2-xBaxCuO4, with x = 0.115 and 0.135, by employing temperature-dependent (down to 400 mK) muon-spin rotation and AC susceptibility, as well as X-ray scattering experiments under compressive uniaxial stress in the CuO2 plane. A sixfold increase of the 3-dimensional (3D) superconducting critical temperature Tc and a full recovery of the 3D phase coherence is observed in both samples with the application of extremely low uniaxial stress of 0.1 GPa. This finding demonstrates the removal of the well-known 1/8-anomaly of cuprates by uniaxial stress. On the other hand, the spin-stripe order temperature as well as the magnetic fraction at 400 mK show only a modest decrease under stress. Moreover, the onset temperatures of 3D superconductivity and spin-stripe order are very similar in the large stress regime. However, a substantial decrease of the magnetic volume fraction and a full suppression of the low-temperature tetragonal structure is found at elevated temperatures, which is a necessary condition for the development of the 3D superconducting phase with optimal Tc. Our results evidence a remarkable cooperation between the long-range static spin-stripe order and the underlying crystalline order with the three-dimensional fully coherent superconductivity. Overall, these results suggest that the stripe- and the SC order may have a common physical mechanism.

Research Organization:
Brookhaven National Laboratory (BNL), Upton, NY (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
SC0012704
OSTI ID:
2229111
Report Number(s):
BNL--225035-2023-JAAM
Journal Information:
Proceedings of the National Academy of Sciences of the United States of America, Journal Name: Proceedings of the National Academy of Sciences of the United States of America Journal Issue: 1 Vol. 121; ISSN 0027-8424
Publisher:
National Academy of SciencesCopyright Statement
Country of Publication:
United States
Language:
English

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75 CONDENSED MATTER PHYSICS
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