Topologically driven linear magnetoresistance in helimagnetic FeP

Abstract The helimagnet FeP is part of a family of binary pnictide materials with the MnP-type structure, which share a nonsymmorphic crystal symmetry that preserves generic band structure characteristics through changes in elemental composition. It shows many similarities, including in its magnetic...

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Autores principales:	D. J. Campbell, J. Collini, J. Sławińska, C. Autieri, L. Wang, K. Wang, B. Wilfong, Y. S. Eo, P. Neves, D. Graf, E. E. Rodriguez, N. P. Butch, M. Buongiorno Nardelli, J. Paglione
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Materials of engineering and construction. Mechanics of materials TA401-492 Atomic physics. Constitution and properties of matter QC170-197
Acceso en línea:	https://doaj.org/article/3c0a37e0c0d247148251152d4c4ba504
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spelling	oai:doaj.org-article:3c0a37e0c0d247148251152d4c4ba5042021-12-02T14:25:02ZTopologically driven linear magnetoresistance in helimagnetic FeP10.1038/s41535-021-00337-22397-4648https://doaj.org/article/3c0a37e0c0d247148251152d4c4ba5042021-04-01T00:00:00Zhttps://doi.org/10.1038/s41535-021-00337-2https://doaj.org/toc/2397-4648Abstract The helimagnet FeP is part of a family of binary pnictide materials with the MnP-type structure, which share a nonsymmorphic crystal symmetry that preserves generic band structure characteristics through changes in elemental composition. It shows many similarities, including in its magnetic order, to isostructural CrAs and MnP, two compounds that are driven to superconductivity under applied pressure. Here we present a series of high magnetic field experiments on high-quality single crystals of FeP, showing that the resistance not only increases without saturation by up to several hundred times its zero-field value by 35 T, but that it also exhibits an anomalously linear field dependence over the entire range when the field is aligned precisely along the crystallographic c-axis. A close comparison of quantum oscillation frequencies to electronic structure calculations links this orientation to a semi-Dirac point in the band structure, which disperses linearly in a single direction in the plane perpendicular to field, a symmetry-protected feature of this entire material family. We show that the two striking features of magnetoresistance—large amplitude and linear field dependence—arise separately in this system, with the latter likely due to a combination of ordered magnetism and topological band structure.D. J. CampbellJ. ColliniJ. SławińskaC. AutieriL. WangK. WangB. WilfongY. S. EoP. NevesD. GrafE. E. RodriguezN. P. ButchM. Buongiorno NardelliJ. PaglioneNature PortfolioarticleMaterials of engineering and construction. Mechanics of materialsTA401-492Atomic physics. Constitution and properties of matterQC170-197ENnpj Quantum Materials, Vol 6, Iss 1, Pp 1-7 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Materials of engineering and construction. Mechanics of materials TA401-492 Atomic physics. Constitution and properties of matter QC170-197
spellingShingle	Materials of engineering and construction. Mechanics of materials TA401-492 Atomic physics. Constitution and properties of matter QC170-197 D. J. Campbell J. Collini J. Sławińska C. Autieri L. Wang K. Wang B. Wilfong Y. S. Eo P. Neves D. Graf E. E. Rodriguez N. P. Butch M. Buongiorno Nardelli J. Paglione Topologically driven linear magnetoresistance in helimagnetic FeP
description	Abstract The helimagnet FeP is part of a family of binary pnictide materials with the MnP-type structure, which share a nonsymmorphic crystal symmetry that preserves generic band structure characteristics through changes in elemental composition. It shows many similarities, including in its magnetic order, to isostructural CrAs and MnP, two compounds that are driven to superconductivity under applied pressure. Here we present a series of high magnetic field experiments on high-quality single crystals of FeP, showing that the resistance not only increases without saturation by up to several hundred times its zero-field value by 35 T, but that it also exhibits an anomalously linear field dependence over the entire range when the field is aligned precisely along the crystallographic c-axis. A close comparison of quantum oscillation frequencies to electronic structure calculations links this orientation to a semi-Dirac point in the band structure, which disperses linearly in a single direction in the plane perpendicular to field, a symmetry-protected feature of this entire material family. We show that the two striking features of magnetoresistance—large amplitude and linear field dependence—arise separately in this system, with the latter likely due to a combination of ordered magnetism and topological band structure.
format	article
author	D. J. Campbell J. Collini J. Sławińska C. Autieri L. Wang K. Wang B. Wilfong Y. S. Eo P. Neves D. Graf E. E. Rodriguez N. P. Butch M. Buongiorno Nardelli J. Paglione
author_facet	D. J. Campbell J. Collini J. Sławińska C. Autieri L. Wang K. Wang B. Wilfong Y. S. Eo P. Neves D. Graf E. E. Rodriguez N. P. Butch M. Buongiorno Nardelli J. Paglione
author_sort	D. J. Campbell
title	Topologically driven linear magnetoresistance in helimagnetic FeP
title_short	Topologically driven linear magnetoresistance in helimagnetic FeP
title_full	Topologically driven linear magnetoresistance in helimagnetic FeP
title_fullStr	Topologically driven linear magnetoresistance in helimagnetic FeP
title_full_unstemmed	Topologically driven linear magnetoresistance in helimagnetic FeP
title_sort	topologically driven linear magnetoresistance in helimagnetic fep
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/3c0a37e0c0d247148251152d4c4ba504
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Topologically driven linear magnetoresistance in helimagnetic FeP

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