$Emergent Magnetic Phases in Pressure-Tuned van der Waals Antiferromagnet FePS_{3}$
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Emergent Magnetic Phases in Pressure-Tuned van der Waals Antiferromagnet FePS_{3}

Layered van der Waals 2D magnetic materials are of great interest in fundamental condensed-matter physics research, as well as for potential applications in spintronics and device physics. We present neutron powder diffraction data using new ultrahigh-pressure techniques to measure the magnetic stru...

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Autores principales:	Matthew J. Coak, David M. Jarvis, Hayrullo Hamidov, Andrew R. Wildes, Joseph A. M. Paddison, Cheng Liu, Charles R. S. Haines, Ngoc T. Dang, Sergey E. Kichanov, Boris N. Savenko, Sungmin Lee, Marie Kratochvílová, Stefan Klotz, Thomas C. Hansen, Denis P. Kozlenko, Je-Geun Park, Siddharth S. Saxena
Formato:	article
Lenguaje:	EN
Publicado:	American Physical Society 2021
Materias:	Physics QC1-999
Acceso en línea:	https://doaj.org/article/fcec1e79eb7648c68793eb997239cbfd
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spelling	oai:doaj.org-article:fcec1e79eb7648c68793eb997239cbfd2021-12-02T14:11:19ZEmergent Magnetic Phases in Pressure-Tuned van der Waals Antiferromagnet FePS_{3}10.1103/PhysRevX.11.0110242160-3308https://doaj.org/article/fcec1e79eb7648c68793eb997239cbfd2021-02-01T00:00:00Zhttp://doi.org/10.1103/PhysRevX.11.011024http://doi.org/10.1103/PhysRevX.11.011024https://doaj.org/toc/2160-3308Layered van der Waals 2D magnetic materials are of great interest in fundamental condensed-matter physics research, as well as for potential applications in spintronics and device physics. We present neutron powder diffraction data using new ultrahigh-pressure techniques to measure the magnetic structure of Mott-insulating 2D honeycomb antiferromagnet FePS_{3} at pressures up to 183 kbar and temperatures down to 80 K. These data are complemented by high-pressure magnetometry and reverse Monte Carlo modeling of the spin configurations. As pressure is applied, the previously measured ambient-pressure magnetic order switches from an antiferromagnetic to a ferromagnetic interplanar interaction and from 2D-like to 3D-like character. The overall antiferromagnetic structure within the ab planes, ferromagnetic chains antiferromagnetically coupled, is preserved, but the magnetic propagation vector is altered from k=(0,1,1/2) to k=(0,1,0), a halving of the magnetic unit cell size. At higher pressures, coincident with the second structural transition and the insulator-metal transition in this compound, we observe a suppression of this long-range order and emergence of a form of magnetic short-range order which survives above room temperature. Reverse Monte Carlo fitting suggests this phase to be a short-ranged version of the original ambient-pressure structure—with the Fe moment size remaining of similar magnitude and with a return to antiferromagnetic interplanar correlations. The persistence of magnetism well into the HP-II metallic state is an observation in contradiction with previous x-ray spectroscopy results which suggest a spin-crossover transition.Matthew J. CoakDavid M. JarvisHayrullo HamidovAndrew R. WildesJoseph A. M. PaddisonCheng LiuCharles R. S. HainesNgoc T. DangSergey E. KichanovBoris N. SavenkoSungmin LeeMarie KratochvílováStefan KlotzThomas C. HansenDenis P. KozlenkoJe-Geun ParkSiddharth S. SaxenaAmerican Physical SocietyarticlePhysicsQC1-999ENPhysical Review X, Vol 11, Iss 1, p 011024 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Physics QC1-999
spellingShingle	Physics QC1-999 Matthew J. Coak David M. Jarvis Hayrullo Hamidov Andrew R. Wildes Joseph A. M. Paddison Cheng Liu Charles R. S. Haines Ngoc T. Dang Sergey E. Kichanov Boris N. Savenko Sungmin Lee Marie Kratochvílová Stefan Klotz Thomas C. Hansen Denis P. Kozlenko Je-Geun Park Siddharth S. Saxena Emergent Magnetic Phases in Pressure-Tuned van der Waals Antiferromagnet FePS_{3}
description	Layered van der Waals 2D magnetic materials are of great interest in fundamental condensed-matter physics research, as well as for potential applications in spintronics and device physics. We present neutron powder diffraction data using new ultrahigh-pressure techniques to measure the magnetic structure of Mott-insulating 2D honeycomb antiferromagnet FePS_{3} at pressures up to 183 kbar and temperatures down to 80 K. These data are complemented by high-pressure magnetometry and reverse Monte Carlo modeling of the spin configurations. As pressure is applied, the previously measured ambient-pressure magnetic order switches from an antiferromagnetic to a ferromagnetic interplanar interaction and from 2D-like to 3D-like character. The overall antiferromagnetic structure within the ab planes, ferromagnetic chains antiferromagnetically coupled, is preserved, but the magnetic propagation vector is altered from k=(0,1,1/2) to k=(0,1,0), a halving of the magnetic unit cell size. At higher pressures, coincident with the second structural transition and the insulator-metal transition in this compound, we observe a suppression of this long-range order and emergence of a form of magnetic short-range order which survives above room temperature. Reverse Monte Carlo fitting suggests this phase to be a short-ranged version of the original ambient-pressure structure—with the Fe moment size remaining of similar magnitude and with a return to antiferromagnetic interplanar correlations. The persistence of magnetism well into the HP-II metallic state is an observation in contradiction with previous x-ray spectroscopy results which suggest a spin-crossover transition.
format	article
author	Matthew J. Coak David M. Jarvis Hayrullo Hamidov Andrew R. Wildes Joseph A. M. Paddison Cheng Liu Charles R. S. Haines Ngoc T. Dang Sergey E. Kichanov Boris N. Savenko Sungmin Lee Marie Kratochvílová Stefan Klotz Thomas C. Hansen Denis P. Kozlenko Je-Geun Park Siddharth S. Saxena
author_facet	Matthew J. Coak David M. Jarvis Hayrullo Hamidov Andrew R. Wildes Joseph A. M. Paddison Cheng Liu Charles R. S. Haines Ngoc T. Dang Sergey E. Kichanov Boris N. Savenko Sungmin Lee Marie Kratochvílová Stefan Klotz Thomas C. Hansen Denis P. Kozlenko Je-Geun Park Siddharth S. Saxena
author_sort	Matthew J. Coak
title	Emergent Magnetic Phases in Pressure-Tuned van der Waals Antiferromagnet FePS_{3}
title_short	Emergent Magnetic Phases in Pressure-Tuned van der Waals Antiferromagnet FePS_{3}
title_full	Emergent Magnetic Phases in Pressure-Tuned van der Waals Antiferromagnet FePS_{3}
title_fullStr	Emergent Magnetic Phases in Pressure-Tuned van der Waals Antiferromagnet FePS_{3}
title_full_unstemmed	Emergent Magnetic Phases in Pressure-Tuned van der Waals Antiferromagnet FePS_{3}
title_sort	emergent magnetic phases in pressure-tuned van der waals antiferromagnet feps_{3}
publisher	American Physical Society
publishDate	2021
url	https://doaj.org/article/fcec1e79eb7648c68793eb997239cbfd
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Emergent Magnetic Phases in Pressure-Tuned van der Waals Antiferromagnet FePS_{3}

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