Tilted Stripes Origin in La1.88Sr0.12CuO4 Revealed by Anisotropic Next-Nearest Neighbor Hopping

Published

July 31, 2024

Author(s)

Wei He, JiaJia Wen, Hong-Chen Jiang, Guangyong Xu, Wei Tian, Takanori Taniguchi, Yoichi Ikeda, Masaki Fujita, Young S. Lee

Abstract

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 Hubbardmodel elucidate the tilting's origin, attributing it to anisotropic next-nearest neighbor hopping t0, consistent with the material's slight orthorhombicity. Our results underscore themodel's success in describing specific details of the ground state of this real material and highlight the role of t0 in the Hamiltonian, revealing the delicate interplay between stripes and superconductivity across theoretical and experimental contexts.

Citation

Communications Physics

Volume

7

Pub Type

Journals

Download Paper

https://doi.org/10.1038/s42005-024-01753-z

Local Download

Keywords

neutron scattering, stripe, superconductor

Citation

He, W. , Wen, J. , Jiang, H. , Xu, G. , Tian, W. , Taniguchi, T. , Ikeda, Y. , Fujita, M. and Lee, Y. (2024), Tilted Stripes Origin in La1.88Sr0.12CuO4 Revealed by Anisotropic Next-Nearest Neighbor Hopping, Communications Physics, [online], https://doi.org/10.1038/s42005-024-01753-z, https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=933174 (Accessed October 14, 2025)