Commensurate itinerant antiferromagnetism in BaFe 2As 2: 75As-NMR studies on a self-flux grown single crystal

Kentaro Kitagawa; Naoyuki Katayama; Kenya Ohgushi; Makoto Yoshida; Masashi Takigawa

doi:10.1143/JPSJ.77.114709

Commensurate itinerant antiferromagnetism in BaFe ₂As ₂: ⁷⁵As-NMR studies on a self-flux grown single crystal

Kentaro Kitagawa, Naoyuki Katayama, Kenya Ohgushi, Makoto Yoshida, Masashi Takigawa

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

205 Citations (Scopus)

Abstract

We report results Of ⁷⁵As nuclear magnetic resonance (NMR) experiments on a self-flux grown single crystal of BaFe ₂As ₂. A first-order antiferromagnetic (AF) transition near 135 K was detected by the splitting of NMR lines, which is accompanied by simultaneous structural transition as evidenced by a sudden large change of the electric field gradient tensor at the As site. The NMR results lead almost uniquely to the stripe spin structure in the AF phase. The data of spin-lattice relaxation rate indicate development of anisotropic spin fluctuations of the stripe-type with decreasing temperature in the paramagnetic phase.

Original language	English
Article number	114709
Journal	journal of the physical society of japan
Volume	77
Issue number	11
DOIs	https://doi.org/10.1143/JPSJ.77.114709
Publication status	Published - 2008 Nov
Externally published	Yes

Keywords

BaFe As
Itinerant antiferromagnetism
NMR
Ternary iron arsenide

ASJC Scopus subject areas

Physics and Astronomy(all)

Access to Document

10.1143/JPSJ.77.114709

Cite this

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title = "Commensurate itinerant antiferromagnetism in BaFe 2As 2: 75As-NMR studies on a self-flux grown single crystal",

abstract = "We report results Of 75As nuclear magnetic resonance (NMR) experiments on a self-flux grown single crystal of BaFe 2As 2. A first-order antiferromagnetic (AF) transition near 135 K was detected by the splitting of NMR lines, which is accompanied by simultaneous structural transition as evidenced by a sudden large change of the electric field gradient tensor at the As site. The NMR results lead almost uniquely to the stripe spin structure in the AF phase. The data of spin-lattice relaxation rate indicate development of anisotropic spin fluctuations of the stripe-type with decreasing temperature in the paramagnetic phase.",

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T2 - 75As-NMR studies on a self-flux grown single crystal

AU - Kitagawa, Kentaro

AU - Katayama, Naoyuki

AU - Ohgushi, Kenya

AU - Yoshida, Makoto

AU - Takigawa, Masashi

PY - 2008/11

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N2 - We report results Of 75As nuclear magnetic resonance (NMR) experiments on a self-flux grown single crystal of BaFe 2As 2. A first-order antiferromagnetic (AF) transition near 135 K was detected by the splitting of NMR lines, which is accompanied by simultaneous structural transition as evidenced by a sudden large change of the electric field gradient tensor at the As site. The NMR results lead almost uniquely to the stripe spin structure in the AF phase. The data of spin-lattice relaxation rate indicate development of anisotropic spin fluctuations of the stripe-type with decreasing temperature in the paramagnetic phase.

AB - We report results Of 75As nuclear magnetic resonance (NMR) experiments on a self-flux grown single crystal of BaFe 2As 2. A first-order antiferromagnetic (AF) transition near 135 K was detected by the splitting of NMR lines, which is accompanied by simultaneous structural transition as evidenced by a sudden large change of the electric field gradient tensor at the As site. The NMR results lead almost uniquely to the stripe spin structure in the AF phase. The data of spin-lattice relaxation rate indicate development of anisotropic spin fluctuations of the stripe-type with decreasing temperature in the paramagnetic phase.

KW - BaFe As

KW - Itinerant antiferromagnetism

KW - NMR

KW - Ternary iron arsenide

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