Interplay between localized and itinerant d electrons in a frustrated metallic antiferromagnet, 2H-AgNiO2
We report the electronic and magnetic behaviour of the frustrated triangular metallic antiferromagnet 2H-AgNiO2 in high magnetic fields (54 T) using thermodynamic and transport measurements. Here localized d electrons are arranged on an antiferromagnetic triangular lattice nested inside a honeycomb...
| Main Authors: | , , , , , , , , , , , , , |
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| Format: | Journal article |
| Published: |
2009
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| _version_ | 1797063604714864640 |
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| author | Coldea, A Carrington, A Coldea, R Malone, L Bangura, A Johannes, M Mazin, I Yelland, E Analytis, J Perenboom, J Jaudet, C Vignolles, D Sorgel, T Jansen, M |
| author_facet | Coldea, A Carrington, A Coldea, R Malone, L Bangura, A Johannes, M Mazin, I Yelland, E Analytis, J Perenboom, J Jaudet, C Vignolles, D Sorgel, T Jansen, M |
| author_sort | Coldea, A |
| collection | OXFORD |
| description | We report the electronic and magnetic behaviour of the frustrated triangular metallic antiferromagnet 2H-AgNiO2 in high magnetic fields (54 T) using thermodynamic and transport measurements. Here localized d electrons are arranged on an antiferromagnetic triangular lattice nested inside a honeycomb lattice with itinerant d electrons. When the magnetic field is along the easy axis we observe a cascade of field-induced transitions, attributed to the competition between easy-axis anisotropy, geometrical frustration and coupling of the localized and itinerant system. The quantum oscillations data suggest that the Fermi surface is reconstructed by the magnetic order but in high fields magnetic breakdown orbits are possible. The itinerant electrons are extremely sensitive to scattering by spin fluctuations and a significant mass enhancement (~ 3) is found. |
| first_indexed | 2024-03-06T21:02:18Z |
| format | Journal article |
| id | oxford-uuid:3b48cf9c-302c-45b3-a8c5-4f1989e165cb |
| institution | University of Oxford |
| last_indexed | 2024-03-06T21:02:18Z |
| publishDate | 2009 |
| record_format | dspace |
| spelling | oxford-uuid:3b48cf9c-302c-45b3-a8c5-4f1989e165cb2022-03-26T14:06:43ZInterplay between localized and itinerant d electrons in a frustrated metallic antiferromagnet, 2H-AgNiO2Journal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:3b48cf9c-302c-45b3-a8c5-4f1989e165cbSymplectic Elements at Oxford2009Coldea, ACarrington, AColdea, RMalone, LBangura, AJohannes, MMazin, IYelland, EAnalytis, JPerenboom, JJaudet, CVignolles, DSorgel, TJansen, MWe report the electronic and magnetic behaviour of the frustrated triangular metallic antiferromagnet 2H-AgNiO2 in high magnetic fields (54 T) using thermodynamic and transport measurements. Here localized d electrons are arranged on an antiferromagnetic triangular lattice nested inside a honeycomb lattice with itinerant d electrons. When the magnetic field is along the easy axis we observe a cascade of field-induced transitions, attributed to the competition between easy-axis anisotropy, geometrical frustration and coupling of the localized and itinerant system. The quantum oscillations data suggest that the Fermi surface is reconstructed by the magnetic order but in high fields magnetic breakdown orbits are possible. The itinerant electrons are extremely sensitive to scattering by spin fluctuations and a significant mass enhancement (~ 3) is found. |
| spellingShingle | Coldea, A Carrington, A Coldea, R Malone, L Bangura, A Johannes, M Mazin, I Yelland, E Analytis, J Perenboom, J Jaudet, C Vignolles, D Sorgel, T Jansen, M Interplay between localized and itinerant d electrons in a frustrated metallic antiferromagnet, 2H-AgNiO2 |
| title | Interplay between localized and itinerant d electrons in a frustrated
metallic antiferromagnet, 2H-AgNiO2 |
| title_full | Interplay between localized and itinerant d electrons in a frustrated
metallic antiferromagnet, 2H-AgNiO2 |
| title_fullStr | Interplay between localized and itinerant d electrons in a frustrated
metallic antiferromagnet, 2H-AgNiO2 |
| title_full_unstemmed | Interplay between localized and itinerant d electrons in a frustrated
metallic antiferromagnet, 2H-AgNiO2 |
| title_short | Interplay between localized and itinerant d electrons in a frustrated
metallic antiferromagnet, 2H-AgNiO2 |
| title_sort | interplay between localized and itinerant d electrons in a frustrated metallic antiferromagnet 2h agnio2 |
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