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${}_{6+y}$

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 $\delta =0.21$, whereas a Fe-free compound shows no magnetic correlation. Resistivity shows an up turn at low temperature in the form of $ln(1/T)$ 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

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Cited by in corpus (5)

• Progress in Neutron Scattering Studies of Spin Excitations in High-Tc Cuprates
• Hidden itinerant-spin phase in heavily-overdoped La2-xSrxCuO4 revealed by dilute Fe doping: A combined neutron scattering and angle-resolved photoemission study
• Distinct Fe-induced magnetic states in the underdoped and overdoped regimes of La2-xSrxCu1-yFeyO4 revealed by muon spin relaxation
• Successive magnetic transitions relating to itinerant spins and localized Cu spins in La2-xSrxCu1-yFeyO4: Possible existence of stripe correlations in the overdoped regime
• Incommensurate Antiferromagnetic Order in the Fe-substituted Bi-2201 Cuprate in the Heavily Overdoped Regime