Temperature-dependent magnetism in artificial honeycomb lattice of connected elements

Summers, B.; Debeer-Schmitt, L.; Dahal, A.; Glavic, A.; Kampschroeder, P.; Gunasekera, J.; Singh, D. K.

doi:10.1103/PhysRevB.97.014401

Title: Temperature-dependent magnetism in artificial honeycomb lattice of connected elements

Journal Article · Wed Jan 03 00:00:00 EST 2018 · Physical Review B

DOI:https://doi.org/10.1103/PhysRevB.97.014401· OSTI ID:1463978

Summers, B. ^[1]; Debeer-Schmitt, L. ^[2]; Dahal, A. ^[1]; Glavic, A. ^[3]; Kampschroeder, P. ^[1]; Gunasekera, J. ^[1]; Singh, D. K. ^[1]

Univ. of Missouri, Columbia, MO (United States). Dept. of Physics and Astronomy
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Paul Scherrer Inst. (PSI), Villigen (Switzerland). Lab. for Neutron Scattering and Imaging

Artificial magnetic honeycomb lattices are expected to exhibit a broad and tunable range of novel magnetic phenomena that would be difficult to achieve in natural materials, such as long-range spin ice, entropy-driven magnetic charge-ordered states, and spin order due to the spin chirality. Eventually, the spin correlation is expected to develop into a unique spin-solid-state-density ground state, manifested by the distribution of the pairs of vortex states of opposite chirality. In this paper we report the creation of an artificial permalloy honeycomb lattice of ultrasmall connecting bonds, with a typical size of $${\simeq}12$$ nm. Detailed magnetic and neutron-scattering measurements on the newly fabricated honeycomb lattice demonstrate the evolution of magnetic correlation as a function of temperature. Finally, at low enough temperature, neutron-scattering measurements and micromagnetic simulation suggest the development of a loop state of vortex configuration in this system.

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Research Organization:: Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Univ. of Missouri, Columbia, MO (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Basic Energy Sciences (BES); National Science Foundation (NSF)

Grant/Contract Number:: AC05-00OR22725; SC0014461; DGE-1069091

OSTI ID:: 1463978

Alternate ID(s):: OSTI ID: 1415529

Journal Information:: Physical Review B, Vol. 97, Issue 1; ISSN 2469-9950

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 8 works

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Cited By (1)

Advances in artificial spin ice Skjærvø, Sandra H.; Marrows, Christopher H.; Stamps, Robert L. Nature Reviews Physics, Vol. 2, Issue 1 https://doi.org/10.1038/s42254-019-0118-3	journal	November 2019

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