Magnetic field effect on Fe-induced short-range magnetic correlation and electrical conductivity in Bi$_{1.75}$Pb$_{0.35}$Sr$_{1.90}$Cu$_{0.91}$Fe$_{0.09}$O$_{6+y}$

S. Wakimoto; H. Hiraka; K. Kudo; D. Okamoto; T. Nishizaki; K. Kakurai; Tao Hong; A. Zheludev; J. M. Tranquada; N. Kobayashi; K. Yamada

doi:10.1103/PhysRevB.82.064507

paper

Magnetic field effect on Fe-induced short-range magnetic correlation and electrical conductivity in Bi $_{1.75}$ Pb $_{0.35}$ Sr $_{1.90}$ Cu $_{0.91}$ Fe $_{0.09}$ O $_{6 + y}$

arXiv:1003.0262 · doi:10.1103/PhysRevB.82.064507

Abstract

We report electrical resistivity measurements and neutron diffraction studies under magnetic fields of Bi $_{1.75}$ Pb $_{0.35}$ Sr $_{1.90}$ Cu $_{0.91}$ Fe $_{0.09}$ O $_{6 + y}$ , in which hole carriers are overdoped. This compound shows short-range incommensurate magnetic correlation with incommensurability $δ = 0.21$ , whereas a Fe-free compound shows no magnetic correlation. Resistivity shows an up turn at low temperature in the form of $l n (1/ T)$ and shows no superconductivity. We observe reduction of resistivity by applying magnetic fields (i.e., a negative magnetoresistive effect) at temperatures below the onset of short-range magnetic correlation. Application of magnetic fields also suppresses the Fe induced incommensurate magnetic correlation. We compare and contrast these observations with two different models: 1) stripe order, and 2) dilute magnetic moments in a metallic alloy, with associated Kondo behavior. The latter picture appears to be more relevant to the present results.

7 pages, 5 figures

Magnetic field effect on Fe-induced short-range magnetic correlation and electrical conductivity in Bi1.75​Pb0.35​Sr1.90​Cu0.91​Fe0.09​O6+y​

Abstract

References in corpus (10)

Magnetic field effect on Fe-induced short-range magnetic correlation and electrical conductivity in Bi $_{1.75}$ Pb $_{0.35}$ Sr $_{1.90}$ Cu $_{0.91}$ Fe $_{0.09}$ O $_{6 + y}$