Muon Spin Rotation Measurements of Heterogeneous Field Response in Overdoped La2-xSrxCuO4

Abstract

Transverse-field muon spin rotation measurements of overdoped La2-xSrxCuO4 reveal a large broadening of the local magnetic field distribution in response to applied field, persisting to high temperatures. The field-response is approximately Curie-Weiss like in temperature and is largest for the highest doping investigated. Such behaviour is contrary to the canonical Fermi-liquid picture commonly associated with the overdoped cuprates and implies extensive heterogeneity in this region of the phase diagram. A possible explanation for the result lies in regions of staggered magnetization about dopant cations, analogous to what is argued to exist in underdoped systems.

4 pages, 4 figures; substantial changes; To be published in Physical Review B

References in corpus (9)

• Magnetic neutron scattering in hole doped cuprate superconductors
• The ground state of heavily-overdoped non-superconducting La${}_{2-x}$Sr${}_x$CuO${}_4$
• Disorder-Induced Static Antiferromagnetism in Cuprate Superconductors
• Weak coupling d-wave BCS superconductivity and unpaired electrons in overdoped La_{2-x}Sr_{x}CuO_{4} single crystals
• Absence of time reversal symmetry breaking in La_{2-x}Sr_{x}CuO_{4}
• Competing ferromagnetism in high temperature copper oxide superconductors
• Cu-spin dynamics in the overdoped regime of La_2-x_Sr_x_Cu_1-y_Zn_y_O_4_ probed by muon spin relaxation
• Inhomogeneous Magnetic-Field Response of YBa2Cu3Oy and La2-xSrxCuO4 Persisting above the Bulk Superconducting Transition Temperature
• Field-induced local moments around nonmagnetic impurities in metallic cuprates

Cited by in corpus (9)

• Direct Search for a Ferromagnetic Phase in a Heavily Overdoped Nonsuperconducting Copper Oxide
• Strongly-overdoped La${}_{2-x}$Sr${}_x$CuO${}_4$: Evidence for Josephson-coupled grains of strongly-correlated superconductor
• Anomalously Sharp Superconducting Transitions in Overdoped $L{a}_{2-x}S{r}_{x}Cu{O}_4$ Films
• Universal inhomogeneous magnetic-field response in the normal state of cuprate high-Tc superconductors
• Curie-like paramagnetism due to incomplete Zhang-Rice singlet formation in La2-xSrxCuO4
• High-field muSR studies of superconducting and magnetic correlations in cuprates above Tc
• Development of Cu-spin correlation in Bi_1.74_Pb_0.38_Sr_1.88_Cu_1-y_Zn_y_O_6+d_ high-temperature superconductors observed by muon spin relaxation
• A Langevin approach to lattice dynamics in a charge ordered polaronic system
• Charge order, superconducting correlations, and $\mu$SR