The influence of the structural transition on magnetic fluctuations in NaFeAs

Juanjuan Liu; Jinchen Wang; Wei Luo; Jieming Sheng; Aifeng Wang; Xianhui Chen; Sergey A Danilkin; Wei Bao

doi:10.1088/0953-8984/28/27/27LT01

The influence of the structural transition on magnetic fluctuations in NaFeAs

Juanjuan Liu, Jinchen Wang, Wei Luo, Jieming Sheng, Aifeng Wang, Xianhui Chen, Sergey A Danilkin, Wei Bao^*

^*Corresponding author for this work

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

3 Citations (Scopus)

Abstract

NaFeAs belongs to a class of Fe-based superconductors which have parent compounds that show separated structural and magnetic transitions. Effects of the structural transition on spin dynamics therefore can be investigated separately from the magnetic transition. A plateau in dynamic spin response is observed in a critical region around the structural transition temperature T_S . It is interpreted as being due to the stiffening of spin fluctuations along the in-plane magnetic hard axis due to the d_xz and d_yz orbital ordering. The appearance of anisotropic spin dynamics in the critical region above the T_S at T^∗ offers a dynamic magnetic scattering mechanism for anisotropic electronic properties in the commonly referred 'nematic phase'.

Original language	English
Article number	27LT01
Journal	Journal of Physics Condensed Matter
Volume	28
Issue number	27
Online published	23 May 2016
DOIs	https://doi.org/10.1088/0953-8984/28/27/27LT01
Publication status	Published - 13 Jul 2016
Externally published	Yes

Research Keywords

Charge
Dynamic magnetic properties
Lattice orders and their coupling
Nematic phase
Neutron inelastic scattering
Orbital
Pnictide superconductors
spin

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title = "The influence of the structural transition on magnetic fluctuations in NaFeAs",

abstract = "NaFeAs belongs to a class of Fe-based superconductors which have parent compounds that show separated structural and magnetic transitions. Effects of the structural transition on spin dynamics therefore can be investigated separately from the magnetic transition. A plateau in dynamic spin response is observed in a critical region around the structural transition temperature TS . It is interpreted as being due to the stiffening of spin fluctuations along the in-plane magnetic hard axis due to the dxz and dyz orbital ordering. The appearance of anisotropic spin dynamics in the critical region above the TS at T∗ offers a dynamic magnetic scattering mechanism for anisotropic electronic properties in the commonly referred 'nematic phase'.",

keywords = "Charge, Dynamic magnetic properties, Lattice orders and their coupling, Nematic phase, Neutron inelastic scattering, Orbital, Pnictide superconductors, spin",

author = "Juanjuan Liu and Jinchen Wang and Wei Luo and Jieming Sheng and Aifeng Wang and Xianhui Chen and Danilkin, {Sergey A} and Wei Bao",

year = "2016",

month = jul,

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doi = "10.1088/0953-8984/28/27/27LT01",

language = "English",

volume = "28",

journal = "Journal of Physics Condensed Matter",

issn = "0953-8984",

publisher = "IOP Publishing",

number = "27",

}

TY - JOUR

T1 - The influence of the structural transition on magnetic fluctuations in NaFeAs

AU - Liu, Juanjuan

AU - Wang, Jinchen

AU - Luo, Wei

AU - Sheng, Jieming

AU - Wang, Aifeng

AU - Chen, Xianhui

AU - Danilkin, Sergey A

AU - Bao, Wei

PY - 2016/7/13

Y1 - 2016/7/13

N2 - NaFeAs belongs to a class of Fe-based superconductors which have parent compounds that show separated structural and magnetic transitions. Effects of the structural transition on spin dynamics therefore can be investigated separately from the magnetic transition. A plateau in dynamic spin response is observed in a critical region around the structural transition temperature TS . It is interpreted as being due to the stiffening of spin fluctuations along the in-plane magnetic hard axis due to the dxz and dyz orbital ordering. The appearance of anisotropic spin dynamics in the critical region above the TS at T∗ offers a dynamic magnetic scattering mechanism for anisotropic electronic properties in the commonly referred 'nematic phase'.

AB - NaFeAs belongs to a class of Fe-based superconductors which have parent compounds that show separated structural and magnetic transitions. Effects of the structural transition on spin dynamics therefore can be investigated separately from the magnetic transition. A plateau in dynamic spin response is observed in a critical region around the structural transition temperature TS . It is interpreted as being due to the stiffening of spin fluctuations along the in-plane magnetic hard axis due to the dxz and dyz orbital ordering. The appearance of anisotropic spin dynamics in the critical region above the TS at T∗ offers a dynamic magnetic scattering mechanism for anisotropic electronic properties in the commonly referred 'nematic phase'.

KW - Charge

KW - Dynamic magnetic properties

KW - Lattice orders and their coupling

KW - Nematic phase

KW - Neutron inelastic scattering

KW - Orbital

KW - Pnictide superconductors

KW - spin

UR - http://www.scopus.com/inward/record.url?scp=84975061707&partnerID=8YFLogxK

UR - https://www.scopus.com/record/pubmetrics.uri?eid=2-s2.0-84975061707&origin=recordpage

U2 - 10.1088/0953-8984/28/27/27LT01

DO - 10.1088/0953-8984/28/27/27LT01

M3 - RGC 21 - Publication in refereed journal

SN - 0953-8984

VL - 28

JO - Journal of Physics Condensed Matter

JF - Journal of Physics Condensed Matter

IS - 27

M1 - 27LT01

ER -

The influence of the structural transition on magnetic fluctuations in NaFeAs

Abstract

Research Keywords

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