NMR search for the spin nematic state in a LaFeAsO single crystal

M. Fu; D. A. Torchetti; T. Imai; F. L. Ning; J. Q. Yan; A. S. Sefat

doi:10.1103/PhysRevLett.109.247001

NMR search for the spin nematic state in a LaFeAsO single crystal

M. Fu, D. A. Torchetti, T. Imai, F. L. Ning, J. Q. Yan, A. S. Sefat

Correlated Electron Materials

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

74 Scopus citations

Abstract

We report a As75 single crystal NMR investigation of LaFeAsO, the parent phase of a pnictide high T_c superconductor. We demonstrate that spin dynamics develop a strong twofold anisotropy within each orthorhombic domain below the tetragonal-orthorhombic structural phase transition at T _TO≈156K. This intermediate state with a dynamical breaking of the rotational symmetry freezes progressively into a spin density wave below T _SDW≈142K. Our findings are consistent with the presence of a spin nematic state below T_TO with an incipient magnetic order.

Original language	English
Article number	247001
Journal	Physical Review Letters
Volume	109
Issue number	24
DOIs	https://doi.org/10.1103/PhysRevLett.109.247001
State	Published - Dec 10 2012

Access to Document

10.1103/PhysRevLett.109.247001

Cite this

@article{52ca35c9099d4e7db868b180e31e845a,

title = "NMR search for the spin nematic state in a LaFeAsO single crystal",

abstract = "We report a As75 single crystal NMR investigation of LaFeAsO, the parent phase of a pnictide high Tc superconductor. We demonstrate that spin dynamics develop a strong twofold anisotropy within each orthorhombic domain below the tetragonal-orthorhombic structural phase transition at T TO≈156K. This intermediate state with a dynamical breaking of the rotational symmetry freezes progressively into a spin density wave below T SDW≈142K. Our findings are consistent with the presence of a spin nematic state below TTO with an incipient magnetic order.",

author = "M. Fu and Torchetti, {D. A.} and T. Imai and Ning, {F. L.} and Yan, {J. Q.} and Sefat, {A. S.}",

year = "2012",

month = dec,

day = "10",

doi = "10.1103/PhysRevLett.109.247001",

language = "English",

volume = "109",

journal = "Physical Review Letters",

issn = "0031-9007",

publisher = "American Physical Society",

number = "24",

}

TY - JOUR

T1 - NMR search for the spin nematic state in a LaFeAsO single crystal

AU - Fu, M.

AU - Torchetti, D. A.

AU - Imai, T.

AU - Ning, F. L.

AU - Yan, J. Q.

AU - Sefat, A. S.

PY - 2012/12/10

Y1 - 2012/12/10

N2 - We report a As75 single crystal NMR investigation of LaFeAsO, the parent phase of a pnictide high Tc superconductor. We demonstrate that spin dynamics develop a strong twofold anisotropy within each orthorhombic domain below the tetragonal-orthorhombic structural phase transition at T TO≈156K. This intermediate state with a dynamical breaking of the rotational symmetry freezes progressively into a spin density wave below T SDW≈142K. Our findings are consistent with the presence of a spin nematic state below TTO with an incipient magnetic order.

AB - We report a As75 single crystal NMR investigation of LaFeAsO, the parent phase of a pnictide high Tc superconductor. We demonstrate that spin dynamics develop a strong twofold anisotropy within each orthorhombic domain below the tetragonal-orthorhombic structural phase transition at T TO≈156K. This intermediate state with a dynamical breaking of the rotational symmetry freezes progressively into a spin density wave below T SDW≈142K. Our findings are consistent with the presence of a spin nematic state below TTO with an incipient magnetic order.

UR - http://www.scopus.com/inward/record.url?scp=84870878223&partnerID=8YFLogxK

U2 - 10.1103/PhysRevLett.109.247001

DO - 10.1103/PhysRevLett.109.247001

M3 - Article

AN - SCOPUS:84870878223

SN - 0031-9007

VL - 109

JO - Physical Review Letters

JF - Physical Review Letters

IS - 24

M1 - 247001

ER -

NMR search for the spin nematic state in a LaFeAsO single crystal

Abstract

Access to Document

Other files and links

Fingerprint

Cite this