Antiferromagnetic critical fluctuations in BaFe2As2

Stephen D. Wilson; Z. Yamani; C. R. Rotundu; B. Freelon; P. N. Valdivia; E. Bourret-Courchesne; J. W. Lynn; Songxue Chi; Tao Hong; R. J. Birgeneau

doi:10.1103/PhysRevB.82.144502

Antiferromagnetic critical fluctuations in BaFe₂As₂

Stephen D. Wilson, Z. Yamani, C. R. Rotundu, B. Freelon, P. N. Valdivia, E. Bourret-Courchesne, J. W. Lynn, Songxue Chi, Tao Hong, R. J. Birgeneau

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Abstract

Magnetic correlations near the magnetostructural phase transition in the bilayer iron-pnictide parent compound, BaFe₂As₂, are measured. In close proximity to the antiferromagnetic phase transition in BaFe₂As₂, a crossover to three-dimensional critical behavior is anticipated and has been preliminarily observed. Here we report complementary measurements of two-dimensional magnetic fluctuations over a broad temperature range about TN. The potential role of two-dimensional critical fluctuations in the magnetic phase behavior of BaFe₂As₂ and their evolution near the anticipated crossover to three-dimensional critical behavior and long-range order are discussed.

Original language	English
Article number	144502
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	82
Issue number	14
DOIs	https://doi.org/10.1103/PhysRevB.82.144502
State	Published - Oct 6 2010

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10.1103/PhysRevB.82.144502

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title = "Antiferromagnetic critical fluctuations in BaFe2As2",

abstract = "Magnetic correlations near the magnetostructural phase transition in the bilayer iron-pnictide parent compound, BaFe2As2, are measured. In close proximity to the antiferromagnetic phase transition in BaFe2As2, a crossover to three-dimensional critical behavior is anticipated and has been preliminarily observed. Here we report complementary measurements of two-dimensional magnetic fluctuations over a broad temperature range about TN. The potential role of two-dimensional critical fluctuations in the magnetic phase behavior of BaFe2As2 and their evolution near the anticipated crossover to three-dimensional critical behavior and long-range order are discussed.",

author = "Wilson, {Stephen D.} and Z. Yamani and Rotundu, {C. R.} and B. Freelon and Valdivia, {P. N.} and E. Bourret-Courchesne and Lynn, {J. W.} and Songxue Chi and Tao Hong and Birgeneau, {R. J.}",

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doi = "10.1103/PhysRevB.82.144502",

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AU - Wilson, Stephen D.

AU - Yamani, Z.

AU - Rotundu, C. R.

AU - Freelon, B.

AU - Valdivia, P. N.

AU - Bourret-Courchesne, E.

AU - Lynn, J. W.

AU - Chi, Songxue

AU - Hong, Tao

AU - Birgeneau, R. J.

PY - 2010/10/6

Y1 - 2010/10/6

N2 - Magnetic correlations near the magnetostructural phase transition in the bilayer iron-pnictide parent compound, BaFe2As2, are measured. In close proximity to the antiferromagnetic phase transition in BaFe2As2, a crossover to three-dimensional critical behavior is anticipated and has been preliminarily observed. Here we report complementary measurements of two-dimensional magnetic fluctuations over a broad temperature range about TN. The potential role of two-dimensional critical fluctuations in the magnetic phase behavior of BaFe2As2 and their evolution near the anticipated crossover to three-dimensional critical behavior and long-range order are discussed.

AB - Magnetic correlations near the magnetostructural phase transition in the bilayer iron-pnictide parent compound, BaFe2As2, are measured. In close proximity to the antiferromagnetic phase transition in BaFe2As2, a crossover to three-dimensional critical behavior is anticipated and has been preliminarily observed. Here we report complementary measurements of two-dimensional magnetic fluctuations over a broad temperature range about TN. The potential role of two-dimensional critical fluctuations in the magnetic phase behavior of BaFe2As2 and their evolution near the anticipated crossover to three-dimensional critical behavior and long-range order are discussed.

UR - http://www.scopus.com/inward/record.url?scp=78049427413&partnerID=8YFLogxK

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DO - 10.1103/PhysRevB.82.144502

M3 - Article

AN - SCOPUS:78049427413

SN - 1098-0121

VL - 82

JO - Physical Review B - Condensed Matter and Materials Physics

JF - Physical Review B - Condensed Matter and Materials Physics

IS - 14

M1 - 144502

ER -

Antiferromagnetic critical fluctuations in BaFe₂As₂

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