Magnetic Field Effect on the Static Antiferromagnetic Order and Spin Excitations in Underdoped Iron Arsenide Superconductor BaFe1.92Ni0.08As2

Published

March 14, 2011

Author(s)

Miaoyin Wang, Huiqian Luo, Meng Wang, Song Xue Chi, Jose Rodriguez Rivera, Deepak Singh, Sung Chang, Jeffrey W. Lynn, Pengcheng Dai

Abstract

We use neutron scattering to study the magnetic field effect on the static antiferromagnetic (AF) order and low-energy spin excitations in the underdoped iron arsenide superconductor BaFe_1.92Ni_0.08As₂. At zero field, superconductivity that occurs below T_c = 17 K coincides with application of a 10-T magnetic field in the FeAs-plane, the intensity of the resonance is reduced, accompanied by decreasing T_c and enhanced static AF scattering. These results are similar to those for some copper oxide superconductors, and demonstrate that the static AF order is a competing phase to superconductivity in BaFe_1.92Ni_0.08As₂

Citation

Physical Review B

Volume

83

Issue

9

Pub Type

Journals

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Keywords

Iron superconductor, spin dynamics, spin resonance, field dependence, competing order parameters, neutron scattering

Citation

Wang, M. , Luo, H. , Wang, M. , Chi, S. , Rodriguez Rivera, J. , Singh, D. , Chang, S. , Lynn, J. and Dai, P. (2011), Magnetic Field Effect on the Static Antiferromagnetic Order and Spin Excitations in Underdoped Iron Arsenide Superconductor BaFe_1.92Ni_0.08As₂, Physical Review B, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=907822 (Accessed December 10, 2024)