Magnetic tricritical point and nematicity in FeSe under pressure

Rustem Khasanov; Rafael M. Fernandes; Gediminas Simutis; Zurab Guguchia; Alex Amato; Hubertus Luetkens; Elvezio Morenzoni; Xiaoli Dong; Fang Zhou; Zhongxian Zhao

doi:10.1103/PhysRevB.97.224510

Magnetic tricritical point and nematicity in FeSe under pressure

Rustem Khasanov, Rafael M. Fernandes, Gediminas Simutis, Zurab Guguchia, Alex Amato, Hubertus Luetkens, Elvezio Morenzoni, Xiaoli Dong, Fang Zhou, Zhongxian Zhao

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

Abstract

Magnetism induced by external pressure (p) was studied in a FeSe crystal sample by means of muon-spin rotation. The magnetic transition changes from second order to first order for pressures exceeding the critical value pc≃2.4-2.5 GPa. The magnetic ordering temperature (TN) and the value of the magnetic moment per Fe site (mFe) increase continuously with increasing pressure, reaching TN≃50 K and mFe≃0.25μB at p≃2.6 GPa, respectively. No pronounced features at both TN(p) and mFe(p) are detected at p≃pc, thus suggesting that the stripe-type magnetic order in FeSe remains unchanged above and below the critical pressure pc. A phenomenological model for the (p,T) phase diagram of FeSe reveals that these observations are consistent with a scenario where the nematic transitions of FeSe at low and high pressures are driven by different mechanisms.

Original language	English (US)
Article number	224510
Journal	Physical Review B
Volume	97
Issue number	22
DOIs	https://doi.org/10.1103/PhysRevB.97.224510
State	Published - Jun 13 2018
Externally published	Yes

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

Online availability

10.1103/PhysRevB.97.224510

Library availability

Discover UIUC Full Text

Cite this

@article{d7e62b4013d3417ea27ceb9eee73c3f1,

title = "Magnetic tricritical point and nematicity in FeSe under pressure",

abstract = "Magnetism induced by external pressure (p) was studied in a FeSe crystal sample by means of muon-spin rotation. The magnetic transition changes from second order to first order for pressures exceeding the critical value pc≃2.4-2.5 GPa. The magnetic ordering temperature (TN) and the value of the magnetic moment per Fe site (mFe) increase continuously with increasing pressure, reaching TN≃50 K and mFe≃0.25μB at p≃2.6 GPa, respectively. No pronounced features at both TN(p) and mFe(p) are detected at p≃pc, thus suggesting that the stripe-type magnetic order in FeSe remains unchanged above and below the critical pressure pc. A phenomenological model for the (p,T) phase diagram of FeSe reveals that these observations are consistent with a scenario where the nematic transitions of FeSe at low and high pressures are driven by different mechanisms.",

author = "Rustem Khasanov and Fernandes, {Rafael M.} and Gediminas Simutis and Zurab Guguchia and Alex Amato and Hubertus Luetkens and Elvezio Morenzoni and Xiaoli Dong and Fang Zhou and Zhongxian Zhao",

note = "Publisher Copyright: {\textcopyright} 2018 American Physical Society.",

year = "2018",

month = jun,

day = "13",

doi = "10.1103/PhysRevB.97.224510",

language = "English (US)",

volume = "97",

journal = "Physical Review B",

issn = "2469-9950",

publisher = "American Physical Society",

number = "22",

}

TY - JOUR

T1 - Magnetic tricritical point and nematicity in FeSe under pressure

AU - Khasanov, Rustem

AU - Fernandes, Rafael M.

AU - Simutis, Gediminas

AU - Guguchia, Zurab

AU - Amato, Alex

AU - Luetkens, Hubertus

AU - Morenzoni, Elvezio

AU - Dong, Xiaoli

AU - Zhou, Fang

AU - Zhao, Zhongxian

PY - 2018/6/13

Y1 - 2018/6/13

N2 - Magnetism induced by external pressure (p) was studied in a FeSe crystal sample by means of muon-spin rotation. The magnetic transition changes from second order to first order for pressures exceeding the critical value pc≃2.4-2.5 GPa. The magnetic ordering temperature (TN) and the value of the magnetic moment per Fe site (mFe) increase continuously with increasing pressure, reaching TN≃50 K and mFe≃0.25μB at p≃2.6 GPa, respectively. No pronounced features at both TN(p) and mFe(p) are detected at p≃pc, thus suggesting that the stripe-type magnetic order in FeSe remains unchanged above and below the critical pressure pc. A phenomenological model for the (p,T) phase diagram of FeSe reveals that these observations are consistent with a scenario where the nematic transitions of FeSe at low and high pressures are driven by different mechanisms.

AB - Magnetism induced by external pressure (p) was studied in a FeSe crystal sample by means of muon-spin rotation. The magnetic transition changes from second order to first order for pressures exceeding the critical value pc≃2.4-2.5 GPa. The magnetic ordering temperature (TN) and the value of the magnetic moment per Fe site (mFe) increase continuously with increasing pressure, reaching TN≃50 K and mFe≃0.25μB at p≃2.6 GPa, respectively. No pronounced features at both TN(p) and mFe(p) are detected at p≃pc, thus suggesting that the stripe-type magnetic order in FeSe remains unchanged above and below the critical pressure pc. A phenomenological model for the (p,T) phase diagram of FeSe reveals that these observations are consistent with a scenario where the nematic transitions of FeSe at low and high pressures are driven by different mechanisms.

UR - http://www.scopus.com/inward/record.url?scp=85048718470&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85048718470&partnerID=8YFLogxK

U2 - 10.1103/PhysRevB.97.224510

DO - 10.1103/PhysRevB.97.224510

M3 - Article

AN - SCOPUS:85048718470

SN - 2469-9950

VL - 97

JO - Physical Review B

JF - Physical Review B

IS - 22

M1 - 224510

ER -

Magnetic tricritical point and nematicity in FeSe under pressure

Abstract

ASJC Scopus subject areas

Online availability

Library availability

Related links

Fingerprint

Cite this