Interplay of nematic and magnetic orders in FeSe under pressure

Daniel Scherer; Anthony Jacko; Christoph Friedrich; Ersoy Sasioglu; Stefan Blugel; Roser Valenti; Brian Møller Andersen

doi:10.1103/PhysRevB.95.094504

Interplay of nematic and magnetic orders in FeSe under pressure

Daniel Scherer, Anthony Jacko, Christoph Friedrich, Ersoy Sasioglu, Stefan Blugel, Roser Valenti, Brian Møller Andersen

X-ray and Neutron Science

22 Citationer (Scopus)

Abstract

We offer an explanation for the recently observed pressure-induced magnetic state in the iron-chalcogenide FeSe based on ab initio estimates for the pressure evolution of the most important Coulomb interaction parameters. We find that an increase of pressure leads to an overall decrease mostly in the nearest-neighbor Coulomb repulsion, which in turn leads to a reduction of the nematic order and the generation of magnetic stripe order. We treat the concomitant effects of band renormalization and the induced interplay of nematic and magnetic order in a self-consistent way and determine the generic topology of the temperature-pressure phase diagram and find qualitative agreement with the experimentally determined phase diagram.

Originalsprog	Engelsk
Artikelnummer	094504
Tidsskrift	Physical Review B
Vol/bind	95
ISSN	2469-9950
DOI	https://doi.org/10.1103/PhysRevB.95.094504
Status	Udgivet - 7 mar. 2017

Adgang til dokumentet

10.1103/PhysRevB.95.094504

PhysRevB.95.094504Forlagets udgivne version, 925 KB

http://arxiv.org/pdf/1612.06085Licens: Andet

Citationsformater

@article{5502849f60494713beb1041a5afc00b5,

title = "Interplay of nematic and magnetic orders in FeSe under pressure",

abstract = "We offer an explanation for the recently observed pressure-induced magnetic state in the iron-chalcogenide FeSe based on ab initio estimates for the pressure evolution of the most important Coulomb interaction parameters. We find that an increase of pressure leads to an overall decrease mostly in the nearest-neighbor Coulomb repulsion, which in turn leads to a reduction of the nematic order and the generation of magnetic stripe order. We treat the concomitant effects of band renormalization and the induced interplay of nematic and magnetic order in a self-consistent way and determine the generic topology of the temperature-pressure phase diagram and find qualitative agreement with the experimentally determined phase diagram.",

author = "Daniel Scherer and Anthony Jacko and Christoph Friedrich and Ersoy Sasioglu and Stefan Blugel and Roser Valenti and Andersen, {Brian M{\o}ller}",

year = "2017",

month = mar,

day = "7",

doi = "10.1103/PhysRevB.95.094504",

language = "English",

volume = "95",

journal = "Physical Review B",

issn = "2469-9950",

publisher = "American Physical Society",

}

TY - JOUR

T1 - Interplay of nematic and magnetic orders in FeSe under pressure

AU - Scherer, Daniel

AU - Jacko, Anthony

AU - Friedrich, Christoph

AU - Sasioglu, Ersoy

AU - Blugel, Stefan

AU - Valenti, Roser

AU - Andersen, Brian Møller

PY - 2017/3/7

Y1 - 2017/3/7

N2 - We offer an explanation for the recently observed pressure-induced magnetic state in the iron-chalcogenide FeSe based on ab initio estimates for the pressure evolution of the most important Coulomb interaction parameters. We find that an increase of pressure leads to an overall decrease mostly in the nearest-neighbor Coulomb repulsion, which in turn leads to a reduction of the nematic order and the generation of magnetic stripe order. We treat the concomitant effects of band renormalization and the induced interplay of nematic and magnetic order in a self-consistent way and determine the generic topology of the temperature-pressure phase diagram and find qualitative agreement with the experimentally determined phase diagram.

AB - We offer an explanation for the recently observed pressure-induced magnetic state in the iron-chalcogenide FeSe based on ab initio estimates for the pressure evolution of the most important Coulomb interaction parameters. We find that an increase of pressure leads to an overall decrease mostly in the nearest-neighbor Coulomb repulsion, which in turn leads to a reduction of the nematic order and the generation of magnetic stripe order. We treat the concomitant effects of band renormalization and the induced interplay of nematic and magnetic order in a self-consistent way and determine the generic topology of the temperature-pressure phase diagram and find qualitative agreement with the experimentally determined phase diagram.

U2 - 10.1103/PhysRevB.95.094504

DO - 10.1103/PhysRevB.95.094504

M3 - Journal article

SN - 2469-9950

VL - 95

JO - Physical Review B

JF - Physical Review B

M1 - 094504

ER -

Interplay of nematic and magnetic orders in FeSe under pressure

Abstract

Adgang til dokumentet

Fingeraftryk

Citationsformater