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In physics, the Kondo effect describes the scattering of conduction electrons in a metal due to magnetic impurities, resulting in a characteristic change i.e. a minimum in electrical resistivity with temperature. The cause of the effect was first explained by Jun Kondo, who applied third-order perturbation theory to the problem to account for scattering of s-orbital conduction electrons off d-orbital electrons localized at impurities. Kondo's calculation predicted that the scattering rate and the resulting part of the resistivity should increase logarithmically as the temperature approaches 0 K. Experiments in the 1960s by Myriam Sarachik at Bell Laboratories provided the first data that confirmed the Kondo effect. Extended to a lattice of magnetic impurities, the Kondo effect likely explains the formation of heavy fermions and Kondo insulators in intermetallic compounds, especially those involving rare earth elements such as cerium, praseodymium, and ytterbium, and actinide elements such as uranium. The Kondo effect has also been observed in quantum dot systems.
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References
- ↑ Coldea, Amalia I. (13 August 2010). "Quantum oscillations probe the normal electronic states of novel superconductors". Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences. 368 (1924): 3503–3517. doi:10.1098/rsta.2010.0089. ISSN 1364-503X. PMID 20603364. S2CID 9755110.
- ↑ "Somerville College Report" (PDF). www.globaloceancommission.org. Archived (PDF) from the original on 15 December 2021. Retrieved 17 December 2021.
- 1 2 3 "Amalia Coldea". University of Oxford Department of Physics. Retrieved 18 December 2021.
- 1 2 3 "Topological effects in high magnetic fields". 2013. Retrieved 17 December 2021.
- ↑ "Scientists 'stumble upon' new material" . The Independent. 21 December 2017. Archived from the original on 22 December 2017. Retrieved 15 December 2021.
- ↑ "Emergent phenomena in novel correlated materials". Archived from the original on 15 December 2021. Retrieved 17 December 2021.
- 1 2 3 "Amalia Coldea". Somerville College Oxford. Retrieved 15 December 2021.
- ↑ Coldea, Amalia I. (2021). "Electronic Nematic States Tuned by Isoelectronic Substitution in Bulk FeSe1−xSx". Frontiers in Physics. 8: 528. arXiv: 2009.05523 . doi: 10.3389/fphy.2020.594500 . ISSN 2296-424X.
- ↑ "Quantum Materials". Oxford Quantum. Retrieved 15 December 2021.
- ↑ "Quantum matter in high magnetic fields". University of Oxford Department of Physics. Retrieved 15 December 2021.
- ↑ "Superconductivity Group: Brian Pippard Prize". Superconductivity Group: Brian Pippard Prize | Institute of Physics. Retrieved 15 December 2021.
- ↑ "2023 Fellows". APS Fellow Archive. American Physical Society. Retrieved 19 October 2023.
- ↑ "Recognition of Distinction" (PDF). University of Oxford Gazette. 154 (5397): 60–61. 12 October 2023. Retrieved 13 May 2024.
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