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| Main Authors: | , , , , , , , , , , , , , , , , , |
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| Format: | Preprint |
| Published: |
2024
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2409.07816 |
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| _version_ | 1866909313205796864 |
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| author | Song, Jiao-Jiao Wu, Qi-Yi Zhang, Chen Gilbertson, Steve M. Riseborough, Peter S. Rusz, Jan Joyce, John J. Graham, Kevin S. Olson, Clifford G. Tobash, Paul H. Bauer, Eric D. Chen, Bo Liu, Hao Duan, Yu-Xia Oppeneer, Peter M. Rodriguez, George Durakiewicz, Tomasz Meng, Jian-Qiao |
| author_facet | Song, Jiao-Jiao Wu, Qi-Yi Zhang, Chen Gilbertson, Steve M. Riseborough, Peter S. Rusz, Jan Joyce, John J. Graham, Kevin S. Olson, Clifford G. Tobash, Paul H. Bauer, Eric D. Chen, Bo Liu, Hao Duan, Yu-Xia Oppeneer, Peter M. Rodriguez, George Durakiewicz, Tomasz Meng, Jian-Qiao |
| contents | This study investigates the 5$f$-electron-conduction electron hybridization process in the heavy fermion superconductor UPd$_2$Al$_3$ using a combination of angle-resolved photoemission spectroscopy (ARPES) and time-resolved photoemission spectroscopy (tr-PES). ARPES measurements reveal the formation of a hybridization gap at a temperature of approximately 75 K, which becomes more pronounced as the temperature decreases. Notably, the persistence of a flat U 5$f$ band at temperatures well above the hybridization onset challenges conventional understanding. Our findings demonstrate a non-monotonic temperature dependence of the quasiparticle relaxation time, with an anomalous decrease at 20 K, suggesting complex electronic and magnetic interactions. These findings provide detailed insights into the 5$f$-electron hybridization process in UPd$_2$Al$_3$, with significant implications for the understanding of heavy fermion superconductivity and the role of 5$f$-electron hybridization in uranium-based materials. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2409_07816 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Unveiling the 5$f$ electron hybridization process in UPd$_2$Al$_3$ via ARPES and Time-resolved PES Song, Jiao-Jiao Wu, Qi-Yi Zhang, Chen Gilbertson, Steve M. Riseborough, Peter S. Rusz, Jan Joyce, John J. Graham, Kevin S. Olson, Clifford G. Tobash, Paul H. Bauer, Eric D. Chen, Bo Liu, Hao Duan, Yu-Xia Oppeneer, Peter M. Rodriguez, George Durakiewicz, Tomasz Meng, Jian-Qiao Strongly Correlated Electrons Superconductivity This study investigates the 5$f$-electron-conduction electron hybridization process in the heavy fermion superconductor UPd$_2$Al$_3$ using a combination of angle-resolved photoemission spectroscopy (ARPES) and time-resolved photoemission spectroscopy (tr-PES). ARPES measurements reveal the formation of a hybridization gap at a temperature of approximately 75 K, which becomes more pronounced as the temperature decreases. Notably, the persistence of a flat U 5$f$ band at temperatures well above the hybridization onset challenges conventional understanding. Our findings demonstrate a non-monotonic temperature dependence of the quasiparticle relaxation time, with an anomalous decrease at 20 K, suggesting complex electronic and magnetic interactions. These findings provide detailed insights into the 5$f$-electron hybridization process in UPd$_2$Al$_3$, with significant implications for the understanding of heavy fermion superconductivity and the role of 5$f$-electron hybridization in uranium-based materials. |
| title | Unveiling the 5$f$ electron hybridization process in UPd$_2$Al$_3$ via ARPES and Time-resolved PES |
| topic | Strongly Correlated Electrons Superconductivity |
| url | https://arxiv.org/abs/2409.07816 |