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Tilted stripes origin in La1.88Sr0.12CuO4 revealed by anisotropic next-nearest neighbor hopping

Journal Article · · Communications Physics
 [1];  [2];  [2];  [3];  [4];  [5];  [5];  [5];  [6]
  1. SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States). Stanford Institute for Materials and Energy Science (SIMES); Stanford Univ., CA (United States); Brookhaven National Laboratory (BNL), Upton, NY (United States)
  2. SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States). Stanford Institute for Materials and Energy Science (SIMES)
  3. National Inst. of Standards and Technology (NIST), Gaithersburg, MD (United States)
  4. Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
  5. Tohoku Univ., Sendai (Japan)
  6. SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States). Stanford Institute for Materials and Energy Science (SIMES); Stanford Univ., CA (United States)
+ Show Author Affiliations
Spin- and charge- stripe order has been extensively studied in the superconducting cuprates, among which underdoped La2–xSrxCuO4 (LSCO) is an archetype with static spin stripes at low temperatures. An intriguing, but not completely understood, phenomenon in LSCO is that the stripes are tilted away from the high-symmetry Cu-Cu directions. Using high-resolution neutron scattering on LSCO with x = 0.12, we find two coexisting phases at low temperatures, one with static spin stripes and the other with fluctuating ones, both sharing the same tilt angle. Our numerical calculations using the doped Hubbard model elucidate the tilting’s origin, attributing it to anisotropic next-nearest neighbor hopping t', consistent with the material’s slight orthorhombicity. Our results underscore the model’s success in describing specific details of the ground state of this real material and highlight the role of t' in the Hamiltonian, revealing the delicate interplay between stripes and superconductivity across theoretical and experimental contexts.
Research Organization:
Brookhaven National Laboratory (BNL), Upton, NY (United States); SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES). Materials Sciences & Engineering Division (MSE); USDOE Office of Science (SC), Basic Energy Sciences (BES). Scientific User Facilities (SUF)
Grant/Contract Number:
AC02-76SF00515; SC0012704
OSTI ID:
2440586
Alternate ID(s):
OSTI ID: 2446965
Report Number(s):
BNL--226034-2024-JAAM
Journal Information:
Communications Physics, Journal Name: Communications Physics Journal Issue: 1 Vol. 7; ISSN 2399-3650
Publisher:
Springer NatureCopyright Statement
Country of Publication:
United States
Language:
English

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