Simon Flury, Wolfgang J. Simeth, Danielle R. Yahne, Daniel G. Mazzone, Eric D. Bauer, Priscila F. S. Rosa, Romain Sibille, Oksana Zaharko, Dariusz J. Gawryluk, Marc Janoschek
{"title":"通过中子散射探索 ErB$_4$ 的磁相图","authors":"Simon Flury, Wolfgang J. Simeth, Danielle R. Yahne, Daniel G. Mazzone, Eric D. Bauer, Priscila F. S. Rosa, Romain Sibille, Oksana Zaharko, Dariusz J. Gawryluk, Marc Janoschek","doi":"arxiv-2409.06436","DOIUrl":null,"url":null,"abstract":"The tetragonal $4f$-electron intermetallic ErB$_4$ is characterized by strong\nIsing anisotropy along the tetragonal $c$ axis. The magnetic moments on the\nerbium sites can be mapped onto a Shastry-Sutherland (SSL) lattice resulting in\ngeometrical frustration. At zero magnetic field ErB$_4$ exhibits collinear\ncolumnar antiferromagnetic (CAFM) order below $T_\\text{N} = 15.4$ K. In the\npresence of a magnetic field parallel to the $c$ axis, ErB$_4$ exhibits a\nplateau at $1/2$ of the saturation magnetization $M_\\text{S}$, which arises at\na spin flip transition at $H_1$ $=$ 1.9 T. Fractional magnetization plateaus\nand other exotic spin phases are a well-established characteristic feature of\nfrustrated spin systems. Monte Carlo simulations propose that ErB$_4$ is an\nideal candidate to feature a spin supersolid phase in close vicinity of $H_1$\nbetween the CAFM and $M/M_\\text{S}=1/2$ plateau (HP) phase. Here we combine\nsingle-crystal neutron diffraction and inelastic neutron scattering to study\nthe magnetic phase diagram and the crystal electric field (CEF) ground state of\nErB$_4$. Our measurements as a function of magnetic field find no signature of\nthe spin supersolid phase but allow us to determine the magnetic structure of\nthe HP phase to be of the uuud type consistent with an Ising material. The\nmagnetic moment $\\mu_{\\mathrm{CEF}}$ $=$ 8.96 $\\mu_B$ expected from the CEF\nconfiguration determined by our inelastic neutron scattering measurements is\nalso consistent with the ordered moment observed in neutron diffraction showing\nthat the moments are fully ordered and close to the Er$^{3+}$ free ion moment\n(9.6 $\\mu_B$).","PeriodicalId":501171,"journal":{"name":"arXiv - PHYS - Strongly Correlated Electrons","volume":"9 1","pages":""},"PeriodicalIF":0.0000,"publicationDate":"2024-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Magnetic Phase Diagram of ErB$_4$ as Explored by Neutron Scattering\",\"authors\":\"Simon Flury, Wolfgang J. Simeth, Danielle R. Yahne, Daniel G. Mazzone, Eric D. Bauer, Priscila F. S. Rosa, Romain Sibille, Oksana Zaharko, Dariusz J. Gawryluk, Marc Janoschek\",\"doi\":\"arxiv-2409.06436\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"The tetragonal $4f$-electron intermetallic ErB$_4$ is characterized by strong\\nIsing anisotropy along the tetragonal $c$ axis. The magnetic moments on the\\nerbium sites can be mapped onto a Shastry-Sutherland (SSL) lattice resulting in\\ngeometrical frustration. At zero magnetic field ErB$_4$ exhibits collinear\\ncolumnar antiferromagnetic (CAFM) order below $T_\\\\text{N} = 15.4$ K. In the\\npresence of a magnetic field parallel to the $c$ axis, ErB$_4$ exhibits a\\nplateau at $1/2$ of the saturation magnetization $M_\\\\text{S}$, which arises at\\na spin flip transition at $H_1$ $=$ 1.9 T. Fractional magnetization plateaus\\nand other exotic spin phases are a well-established characteristic feature of\\nfrustrated spin systems. Monte Carlo simulations propose that ErB$_4$ is an\\nideal candidate to feature a spin supersolid phase in close vicinity of $H_1$\\nbetween the CAFM and $M/M_\\\\text{S}=1/2$ plateau (HP) phase. Here we combine\\nsingle-crystal neutron diffraction and inelastic neutron scattering to study\\nthe magnetic phase diagram and the crystal electric field (CEF) ground state of\\nErB$_4$. Our measurements as a function of magnetic field find no signature of\\nthe spin supersolid phase but allow us to determine the magnetic structure of\\nthe HP phase to be of the uuud type consistent with an Ising material. The\\nmagnetic moment $\\\\mu_{\\\\mathrm{CEF}}$ $=$ 8.96 $\\\\mu_B$ expected from the CEF\\nconfiguration determined by our inelastic neutron scattering measurements is\\nalso consistent with the ordered moment observed in neutron diffraction showing\\nthat the moments are fully ordered and close to the Er$^{3+}$ free ion moment\\n(9.6 $\\\\mu_B$).\",\"PeriodicalId\":501171,\"journal\":{\"name\":\"arXiv - PHYS - Strongly Correlated Electrons\",\"volume\":\"9 1\",\"pages\":\"\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2024-09-10\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"arXiv - PHYS - Strongly Correlated Electrons\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/arxiv-2409.06436\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"arXiv - PHYS - Strongly Correlated Electrons","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/arxiv-2409.06436","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Magnetic Phase Diagram of ErB$_4$ as Explored by Neutron Scattering
The tetragonal $4f$-electron intermetallic ErB$_4$ is characterized by strong
Ising anisotropy along the tetragonal $c$ axis. The magnetic moments on the
erbium sites can be mapped onto a Shastry-Sutherland (SSL) lattice resulting in
geometrical frustration. At zero magnetic field ErB$_4$ exhibits collinear
columnar antiferromagnetic (CAFM) order below $T_\text{N} = 15.4$ K. In the
presence of a magnetic field parallel to the $c$ axis, ErB$_4$ exhibits a
plateau at $1/2$ of the saturation magnetization $M_\text{S}$, which arises at
a spin flip transition at $H_1$ $=$ 1.9 T. Fractional magnetization plateaus
and other exotic spin phases are a well-established characteristic feature of
frustrated spin systems. Monte Carlo simulations propose that ErB$_4$ is an
ideal candidate to feature a spin supersolid phase in close vicinity of $H_1$
between the CAFM and $M/M_\text{S}=1/2$ plateau (HP) phase. Here we combine
single-crystal neutron diffraction and inelastic neutron scattering to study
the magnetic phase diagram and the crystal electric field (CEF) ground state of
ErB$_4$. Our measurements as a function of magnetic field find no signature of
the spin supersolid phase but allow us to determine the magnetic structure of
the HP phase to be of the uuud type consistent with an Ising material. The
magnetic moment $\mu_{\mathrm{CEF}}$ $=$ 8.96 $\mu_B$ expected from the CEF
configuration determined by our inelastic neutron scattering measurements is
also consistent with the ordered moment observed in neutron diffraction showing
that the moments are fully ordered and close to the Er$^{3+}$ free ion moment
(9.6 $\mu_B$).