$\mathrm{Co}{({\mathrm{NO}}_{3})}_{2}$ as an inverted umbrella-type chiral noncoplanar ferrimagnet

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$Co {({NO}_{3})}_{2}$ as an inverted umbrella-type chiral noncoplanar ferrimagnet

I. L. Danilovich, E. B. Deeva, K. Y. Bukhteev, A. A. Vorobyova, I. V. Morozov, O. S. Volkova, E. A. Zvereva, O. V. Maximova, I. V. Solovyev, S. A. Nikolaev, D. Phuyal, M. Abdel-Hafiez, Y. C. Wang, J.-Y. Lin, J. M. Chen, D. I. Gorbunov, K. Puzniak, B. Lake, and A. N. Vasiliev

Phys. Rev. B 102, 094429 – Published 23 September 2020

Abstract

The low-dimensional magnetic systems tend to reveal exotic spin-liquid ground states or form peculiar types of long-range order. Among systems of vivid interest are those characterized by the triangular motif in two dimensions. The realization of either ordered or disordered ground state in triangular, honeycomb, or kagome lattices is dictated by the competition of exchange interactions, also being sensitive to anisotropy and the spin value of magnetic ions. While the low-spin Heisenberg systems may arrive to a spin-liquid long-range entangled quantum state with emergent gauge structures, the high-spin Ising systems may establish the rigid noncollinear structures. Here, we present the case of chiral noncoplanar inverted umbrella-type ferrimagnet formed in cobalt nitrate $Co {({NO}_{3})}_{2}$ below $T_{C} = 3 K$ with the comparable spin and orbital contributions to the total magnetic moment.

Received 12 June 2020
Revised 8 August 2020
Accepted 2 September 2020

DOI:https://doi.org/10.1103/PhysRevB.102.094429

Physics Subject Headings (PhySH)

Ferrimagnetism Magnetic order Thermodynamics

Chiral magnets

Density functional calculations Electron spin resonance First-principles calculations X-ray absorption spectroscopy

Condensed Matter, Materials & Applied Physics

Authors & Affiliations

I. L. Danilovich¹, E. B. Deeva ¹, K. Y. Bukhteev¹, A. A. Vorobyova¹, I. V. Morozov¹, O. S. Volkova^1,2, E. A. Zvereva^1,3, O. V. Maximova^1,4, I. V. Solovyev ^2,5,6, S. A. Nikolaev^6,7, D. Phuyal⁸, M. Abdel-Hafiez^8,9, Y. C. Wang¹⁰, J.-Y. Lin^10,11, J. M. Chen¹², D. I. Gorbunov¹³, K. Puzniak ¹⁴, B. Lake^14,15, and A. N. Vasiliev ^1,2,3

¹Lomonosov Moscow State University, Moscow 119991, Russia
²Ural Federal University, Yekaterinburg 620002, Russia
³National Research South Ural State University, Chelyabinsk 454080, Russia
⁴National University of Science and Technology “MISiS”, Moscow 119049, Russia
⁵Institute of Metal Physics, Yekaterinburg 620108, Russia
⁶MANA, National Institute for Materials Science, Tsukuba, Ibaraki 305-0044, Japan
⁷Tokyo Institute of Technology, Yokohama 226–8503, Japan
⁸Uppsala University, Uppsala SE-75120, Sweden
⁹Harvard University, Cambridge, Massachusetts 02138, USA
¹⁰National Chiao Tung University, Hsinchu 30010, Taiwan
¹¹Center for Emergent Functional Matter Science, National Chiao Tung University, Hsinchu 30010, Taiwan
¹²National Synchrotron Radiation Center, Hsinchu 30076, Taiwan
¹³Hochfeld-Magnetlabor Dresden (HLD-EMFL), Helmholtz-Zentrum Dresden-Rossendorf, 01328 Dresden, Germany
¹⁴Helmholtz-Zentrum Berlin für Materialien und Energie GmbH, Berlin D-14109, Germany
¹⁵Berlin Technical University, Berlin D-10623, Germany

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Vol. 102, Iss. 9 — 1 September 2020

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Physical Review B

covering condensed matter and materials physics

$Co {({NO}_{3})}_{2}$ as an inverted umbrella-type chiral noncoplanar ferrimagnet

I. L. Danilovich, E. B. Deeva, K. Y. Bukhteev, A. A. Vorobyova, I. V. Morozov, O. S. Volkova, E. A. Zvereva, O. V. Maximova, I. V. Solovyev, S. A. Nikolaev, D. Phuyal, M. Abdel-Hafiez, Y. C. Wang, J.-Y. Lin, J. M. Chen, D. I. Gorbunov, K. Puzniak, B. Lake, and A. N. Vasiliev

Phys. Rev. B 102, 094429 – Published 23 September 2020

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Physical Review B

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Co(NO3)2 as an inverted umbrella-type chiral noncoplanar ferrimagnet

I. L. Danilovich, E. B. Deeva, K. Y. Bukhteev, A. A. Vorobyova, I. V. Morozov, O. S. Volkova, E. A. Zvereva, O. V. Maximova, I. V. Solovyev, S. A. Nikolaev, D. Phuyal, M. Abdel-Hafiez, Y. C. Wang, J.-Y. Lin, J. M. Chen, D. I. Gorbunov, K. Puzniak, B. Lake, and A. N. Vasiliev

Phys. Rev. B 102, 094429 – Published 23 September 2020

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$Co {({NO}_{3})}_{2}$ as an inverted umbrella-type chiral noncoplanar ferrimagnet