| People | Locations | Statistics |
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Coak, Matthew John
University of Birmingham
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (6/6 displayed)
- 2024Magnetotransport of Sm2Ir2O7 across the pressure-induced quantum-critical phase boundarycitations
- 2023Asymmetric phase diagram and dimensional crossover in a system of spin-1/2 dimers under applied hydrostatic pressurecitations
- 2022Pressure-induced shift of effective Ce valence, Fermi energy and phase boundaries in CeOs4Sb12citations
- 2021Pressure-induced large increase of Curie temperature of the van der Waals ferromagnet VI3citations
- 2021Emergent magnetic phases in pressure-tuned van der Waals antiferromagnet FePS3citations
- 2015Low Temperature Resistivity of the Rare Earth Diborides (Er, Ho, Tm)B$_2$
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article
Pressure-induced shift of effective Ce valence, Fermi energy and phase boundaries in CeOs4Sb12
Abstract
CeOs<sub>4</sub>Sb<sub>12</sub>, a member of the skutterudite family, has an unusual semimetallic low-temperature L-phase that inhabits a wedge-like area of the field H—temperature T phase diagram. We have conducted measurements of electrical transport and megahertz conductivity on CeOs<sub>4</sub>Sb<sub>12</sub> single crystals under pressures of up to 3 GPa and in high magnetic fields of up to 41 T to investigate the influence of pressure on the different H–T phase boundaries. While the high-temperature valence transition between the metallic H-phase and the L-phase is shifted to higher T by pressures of the order of 1 GPa, we observed only a marginal suppression of the S-phase that is found below 1 K for pressures of up to 1.91 GPa. High-field quantum oscillations have been observed for pressures up to 3.0 GPa and the Fermi surface of the high-field side of the H-phase is found to show a surprising decrease in size with increasing pressure, implying a change in electronic structure rather than a mere contraction of lattice parameters. We evaluate the field-dependence of the effective masses for different pressures and also reflect on the sample dependence of some of the properties of CeOs<sub>4</sub>Sb<sub>12</sub> which appears to be limited to the low-field region.