Magnetic field effect on static antiferromagnetic order and spin excitations in the underdoped iron arsenide superconductor BaFe 1.92Ni0.08As2

Miaoyin Wang; Huiqian Luo; Meng Wang; Songxue Chi; Jose A. Rodriguez-Rivera; Deepak Singh; Sung Chang; Jeffrey W. Lynn; Pengcheng Dai

doi:10.1103/PhysRevB.83.094516

Magnetic field effect on static antiferromagnetic order and spin excitations in the underdoped iron arsenide superconductor BaFe _1.92Ni_0.08As₂

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

Research output: Contribution to journal › Article › peer-review

32 Scopus citations

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 a critical temperature of T_c=17 K coincides with the appearance of a neutron spin resonance and reduction in the static ordered moment. Upon 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.

Original language	English
Article number	094516
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	83
Issue number	9
DOIs	https://doi.org/10.1103/PhysRevB.83.094516
State	Published - Mar 14 2011
Externally published	Yes

Funding

Funders	Funder number
National Science Foundation	0756568

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Wang, M., Luo, H., Wang, M., Chi, S., Rodriguez-Rivera, J. A., Singh, D., Chang, S., Lynn, J. W., & Dai, P. (2011). Magnetic field effect on static antiferromagnetic order and spin excitations in the underdoped iron arsenide superconductor BaFe _1.92Ni_0.08As₂. Physical Review B - Condensed Matter and Materials Physics, 83(9), Article 094516. https://doi.org/10.1103/PhysRevB.83.094516

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title = "Magnetic field effect on static antiferromagnetic order and spin excitations in the underdoped iron arsenide superconductor BaFe 1.92Ni0.08As2",

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 BaFe1.92Ni0.08As2. At zero field, superconductivity that occurs below a critical temperature of Tc=17 K coincides with the appearance of a neutron spin resonance and reduction in the static ordered moment. Upon application of a ~10-T magnetic field in the FeAs plane, the intensity of the resonance is reduced, accompanied by decreasing Tc 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 1.92Ni0.08As2.",

author = "Miaoyin Wang and Huiqian Luo and Meng Wang and Songxue Chi and Rodriguez-Rivera, {Jose A.} and Deepak Singh and Sung Chang and Lynn, {Jeffrey W.} and Pengcheng Dai",

year = "2011",

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doi = "10.1103/PhysRevB.83.094516",

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Wang, M, Luo, H, Wang, M, Chi, S, Rodriguez-Rivera, JA, Singh, D, Chang, S, Lynn, JW & Dai, P 2011, 'Magnetic field effect on static antiferromagnetic order and spin excitations in the underdoped iron arsenide superconductor BaFe _1.92Ni_0.08As₂', Physical Review B - Condensed Matter and Materials Physics, vol. 83, no. 9, 094516. https://doi.org/10.1103/PhysRevB.83.094516

TY - JOUR

T1 - Magnetic field effect on static antiferromagnetic order and spin excitations in the underdoped iron arsenide superconductor BaFe 1.92Ni0.08As2

AU - Wang, Miaoyin

AU - Luo, Huiqian

AU - Wang, Meng

AU - Chi, Songxue

AU - Rodriguez-Rivera, Jose A.

AU - Singh, Deepak

AU - Chang, Sung

AU - Lynn, Jeffrey W.

AU - Dai, Pengcheng

PY - 2011/3/14

Y1 - 2011/3/14

N2 - 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 BaFe1.92Ni0.08As2. At zero field, superconductivity that occurs below a critical temperature of Tc=17 K coincides with the appearance of a neutron spin resonance and reduction in the static ordered moment. Upon application of a ~10-T magnetic field in the FeAs plane, the intensity of the resonance is reduced, accompanied by decreasing Tc 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 1.92Ni0.08As2.

AB - 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 BaFe1.92Ni0.08As2. At zero field, superconductivity that occurs below a critical temperature of Tc=17 K coincides with the appearance of a neutron spin resonance and reduction in the static ordered moment. Upon application of a ~10-T magnetic field in the FeAs plane, the intensity of the resonance is reduced, accompanied by decreasing Tc 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 1.92Ni0.08As2.

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DO - 10.1103/PhysRevB.83.094516

M3 - Article

AN - SCOPUS:79961057179

SN - 1098-0121

VL - 83

JO - Physical Review B - Condensed Matter and Materials Physics

JF - Physical Review B - Condensed Matter and Materials Physics

IS - 9

M1 - 094516

ER -

Magnetic field effect on static antiferromagnetic order and spin excitations in the underdoped iron arsenide superconductor BaFe _1.92Ni_0.08As₂

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