Fermi surface of IrTe2 in the valence-bond state as determined by quantum oscillations
We report the observation of the de Haas-van Alphen effect in IrTe2 measured using torque magnetometry at low temperatures down to 0.4 K and in high magnetic fields up to 33T. IrTe2 undergoes a major structural transition around 283 K due to the formation of planes of Ir and Te dimers that cut diago...
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| Fformat: | Journal article |
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2014
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| _version_ | 1826273485422329856 |
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| author | Blake, S Watson, MD McCollam, A Kasahara, S Johnson, R Narayanan, A Pascut, G Haule, K Kiryukhin, V Yamashita, T Watanabe, D Shibauchi, T Matsuda, Y Coldea, A |
| author_facet | Blake, S Watson, MD McCollam, A Kasahara, S Johnson, R Narayanan, A Pascut, G Haule, K Kiryukhin, V Yamashita, T Watanabe, D Shibauchi, T Matsuda, Y Coldea, A |
| author_sort | Blake, S |
| collection | OXFORD |
| description | We report the observation of the de Haas-van Alphen effect in IrTe2 measured using torque magnetometry at low temperatures down to 0.4 K and in high magnetic fields up to 33T. IrTe2 undergoes a major structural transition around 283 K due to the formation of planes of Ir and Te dimers that cut diagonally through the lattice planes, with its electronic structure predicted to change significantly from a layered system with predominantly three-dimensional character to a tilted quasi-two dimensional Fermi surface. Quantum oscillations provide direct confirmation of this unusual tilted Fermi surface and also reveal very light quasiparticle masses (less than 1 me), with no significant enhancement due to electronic correlations. We find good agreement between the angular dependence of the observed and calculated de Haas-van Alphen frequencies, taking into account the contribution of different structural domains that form while cooling IrTe2. |
| first_indexed | 2024-03-06T22:28:54Z |
| format | Journal article |
| id | oxford-uuid:579d92fa-7a19-475f-b3a6-2bbf10f9ccf9 |
| institution | University of Oxford |
| last_indexed | 2024-03-06T22:28:54Z |
| publishDate | 2014 |
| record_format | dspace |
| spelling | oxford-uuid:579d92fa-7a19-475f-b3a6-2bbf10f9ccf92022-03-26T16:57:52ZFermi surface of IrTe2 in the valence-bond state as determined by quantum oscillationsJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:579d92fa-7a19-475f-b3a6-2bbf10f9ccf9Symplectic Elements at Oxford2014Blake, SWatson, MDMcCollam, AKasahara, SJohnson, RNarayanan, APascut, GHaule, KKiryukhin, VYamashita, TWatanabe, DShibauchi, TMatsuda, YColdea, AWe report the observation of the de Haas-van Alphen effect in IrTe2 measured using torque magnetometry at low temperatures down to 0.4 K and in high magnetic fields up to 33T. IrTe2 undergoes a major structural transition around 283 K due to the formation of planes of Ir and Te dimers that cut diagonally through the lattice planes, with its electronic structure predicted to change significantly from a layered system with predominantly three-dimensional character to a tilted quasi-two dimensional Fermi surface. Quantum oscillations provide direct confirmation of this unusual tilted Fermi surface and also reveal very light quasiparticle masses (less than 1 me), with no significant enhancement due to electronic correlations. We find good agreement between the angular dependence of the observed and calculated de Haas-van Alphen frequencies, taking into account the contribution of different structural domains that form while cooling IrTe2. |
| spellingShingle | Blake, S Watson, MD McCollam, A Kasahara, S Johnson, R Narayanan, A Pascut, G Haule, K Kiryukhin, V Yamashita, T Watanabe, D Shibauchi, T Matsuda, Y Coldea, A Fermi surface of IrTe2 in the valence-bond state as determined by quantum oscillations |
| title | Fermi surface of IrTe2 in the valence-bond state as determined by
quantum oscillations |
| title_full | Fermi surface of IrTe2 in the valence-bond state as determined by
quantum oscillations |
| title_fullStr | Fermi surface of IrTe2 in the valence-bond state as determined by
quantum oscillations |
| title_full_unstemmed | Fermi surface of IrTe2 in the valence-bond state as determined by
quantum oscillations |
| title_short | Fermi surface of IrTe2 in the valence-bond state as determined by
quantum oscillations |
| title_sort | fermi surface of irte2 in the valence bond state as determined by quantum oscillations |
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