Magnetic monopole density and antiferromagnetic domain control in spin-ice iridates
Magnetically frustrated systems provide fertile ground for complex behaviour, including unconventional ground states with emergent symmetries, topological properties, and exotic excitations. A canonical example is the emergence of magnetic-charge-carrying quasiparticles in spin-ice compounds. Despit...
| Main Authors: | , , , , , , , , |
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| Format: | Journal article |
| Language: | English |
| Published: |
Springer Nature
2022
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| _version_ | 1826297482234036224 |
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| author | Pearce, MJ Götze, K Szabó, A Sikkenk, TS Lees, MR Boothroyd, AT Prabhakaran, D Castelnovo, C Goddard, PA |
| author_facet | Pearce, MJ Götze, K Szabó, A Sikkenk, TS Lees, MR Boothroyd, AT Prabhakaran, D Castelnovo, C Goddard, PA |
| author_sort | Pearce, MJ |
| collection | OXFORD |
| description | Magnetically frustrated systems provide fertile ground for complex behaviour, including unconventional ground states with emergent symmetries, topological properties, and exotic excitations. A canonical example is the emergence of magnetic-charge-carrying quasiparticles in spin-ice compounds. Despite extensive work, a reliable experimental indicator of the density of these magnetic monopoles is yet to be found. Using measurements on single crystals of Ho2Ir2O7 combined with dipolar Monte Carlo simulations, we show that the isothermal magnetoresistance is highly sensitive to the monopole density. Moreover, we uncover an unexpected and strong coupling between the monopoles on the holmium sublattice and the antiferromagnetically ordered iridium ions. These results pave the way towards a quantitative experimental measure of monopole density and demonstrate the ability to control antiferromagnetic domain walls using a uniform external magnetic field, a key goal in the design of next-generation spintronic devices. |
| first_indexed | 2024-03-07T04:32:18Z |
| format | Journal article |
| id | oxford-uuid:cebb4daf-1b56-4df2-adb8-a3079e82277e |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-07T04:32:18Z |
| publishDate | 2022 |
| publisher | Springer Nature |
| record_format | dspace |
| spelling | oxford-uuid:cebb4daf-1b56-4df2-adb8-a3079e82277e2022-03-27T07:37:44ZMagnetic monopole density and antiferromagnetic domain control in spin-ice iridatesJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:cebb4daf-1b56-4df2-adb8-a3079e82277eEnglishSymplectic ElementsSpringer Nature2022Pearce, MJGötze, KSzabó, ASikkenk, TSLees, MRBoothroyd, ATPrabhakaran, DCastelnovo, CGoddard, PAMagnetically frustrated systems provide fertile ground for complex behaviour, including unconventional ground states with emergent symmetries, topological properties, and exotic excitations. A canonical example is the emergence of magnetic-charge-carrying quasiparticles in spin-ice compounds. Despite extensive work, a reliable experimental indicator of the density of these magnetic monopoles is yet to be found. Using measurements on single crystals of Ho2Ir2O7 combined with dipolar Monte Carlo simulations, we show that the isothermal magnetoresistance is highly sensitive to the monopole density. Moreover, we uncover an unexpected and strong coupling between the monopoles on the holmium sublattice and the antiferromagnetically ordered iridium ions. These results pave the way towards a quantitative experimental measure of monopole density and demonstrate the ability to control antiferromagnetic domain walls using a uniform external magnetic field, a key goal in the design of next-generation spintronic devices. |
| spellingShingle | Pearce, MJ Götze, K Szabó, A Sikkenk, TS Lees, MR Boothroyd, AT Prabhakaran, D Castelnovo, C Goddard, PA Magnetic monopole density and antiferromagnetic domain control in spin-ice iridates |
| title | Magnetic monopole density and antiferromagnetic domain control in spin-ice iridates |
| title_full | Magnetic monopole density and antiferromagnetic domain control in spin-ice iridates |
| title_fullStr | Magnetic monopole density and antiferromagnetic domain control in spin-ice iridates |
| title_full_unstemmed | Magnetic monopole density and antiferromagnetic domain control in spin-ice iridates |
| title_short | Magnetic monopole density and antiferromagnetic domain control in spin-ice iridates |
| title_sort | magnetic monopole density and antiferromagnetic domain control in spin ice iridates |
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