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Contrasting c-axis and in-plane uniaxial stress effects on superconductivity and stripe order in La1.885Ba0.115CuO4

Journal Article · · Communications Physics
 [1];  [1];  [1];  [1];  [1];  [2];  [1];  [1];  [3];  [4];  [1];  [1];  [1];  [5];  [6];  [3];  [2];  [1];  [1]
  1. Paul Scherrer Inst. (PSI), Villigen (Switzerland)
  2. Sophia Univ. (Japan)
  3. Technische Universität Dresden (Germany)
  4. Shanghai Jiao Tong Univ. (China)
  5. Paul Scherrer Inst. (PSI), Villigen (Switzerland); Univ. of Zurich (Switzerland)
  6. Brookhaven National Laboratory (BNL), Upton, NY (United States)
+ Show Author Affiliations
The cuprate superconductor La2−xBaxCuO4 (LBCO) near x = 0.125 is a striking example of intertwined electronic orders, where 3D superconductivity is anomalously suppressed, allowing spin and charge stripe order to develop. Understanding this interplay remains a key challenge in cuprates, highlighting the necessity of external tuning for deeper insight. While in-plane uniaxial stress enhances superconductivity and suppresses stripe order, the effects of c-axis compression remains largely unexplored. Here, we use muon spin rotation (μSR) and AC susceptibility with an in situ piezoelectric stress device to investigate the spin-stripe order and superconductivity in LBCO-0.115 under c-axis compression. The measurements reveal a gradual suppression of the superconducting transition temperature (Tc) with increasing c-axis stress, in stark contrast to the strong enhancement observed under in-plane stress. We further show that while in-plane stress rapidly reduces both the magnetic volume fraction (Vm) and the spin-stripe ordering temperature (Tso), c-axis compression has no effect, with Vm and Tso exhibiting an almost unchanged behavior up to the highest applied stress of 0.21 GPa. These findings demonstrate a strong anisotropy in stress response.
Research Organization:
Brookhaven National Laboratory (BNL), Upton, NY (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES). Materials Sciences & Engineering Division (MSE)
Grant/Contract Number:
SC0012704
OSTI ID:
2572791
Report Number(s):
BNL--228458-2025-JAAM
Journal Information:
Communications Physics, Journal Name: Communications Physics Journal Issue: 1 Vol. 8; ISSN 2399-3650
Publisher:
Springer NatureCopyright Statement
Country of Publication:
United States
Language:
English

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