Negative Oxygen Isotope Effect on the Static Spin Stripe Order in La_(2-x)Ba_xCuO_4 (x = 1/8)

Z. Guguchia; R. Khasanov; M. Bendele; E. Pomjakushina; K. Conder; A. Shengelaya; H. Keller

doi:10.1103/PhysRevLett.113.057002

Negative Oxygen Isotope Effect on the Static Spin Stripe Order in La_(2-x)Ba_xCuO_4 (x = 1/8)

Superconductivity 2014-09-04 v1

Authors: Z. Guguchia , R. Khasanov , M. Bendele , E. Pomjakushina , K. Conder , A. Shengelaya , H. Keller

View on arXiv ↗ PDF ↗ DOI ↗

Abstract

Large negative oxygen-isotope (16O/18O) effects (OIE's) on the static spin-stripe ordering temperature T_so and the magnetic volume fraction V_m were observed in La_(2-x)Ba_xCuO_4 (x = 1/8) by means of muon spin rotation experiments. The corresponding OIE exponents were found to be alpha_(T_so) = -0.57(6) and alpha_(V_m) = -0.71(9), which are sign reversed to alpha_(T_c) = 0.46(6) measured for the superconducting transition temperature T_c. This indicates that the electron-lattice interaction is involved in the stripe formation and plays an important role in the competition between bulk superconductivity and static stripe order in the cuprates.

Keywords

oxygen isotope effect static spin stripe order La_(2-x)Ba_xCuO_4 muon spin rotation electron-lattice interaction cuprates

Cite

@article{arxiv.1405.6846,
  title  = {Negative Oxygen Isotope Effect on the Static Spin Stripe Order in La_(2-x)Ba_xCuO_4 (x = 1/8)},
  author = {Z. Guguchia and R. Khasanov and M. Bendele and E. Pomjakushina and K. Conder and A. Shengelaya and H. Keller},
  journal= {arXiv preprint arXiv:1405.6846},
  year   = {2014}
}

Comments

5 pages, 4 figures

Negative Oxygen Isotope Effect on the Static Spin Stripe Order in La_(2-x)Ba_xCuO_4 (x = 1/8)

Abstract

Keywords

Cite

Comments

Related papers