FL* Interpretation of a Dichotomy in the Spin Susceptibility of the Cuprates
We propose that some dichotomic Fermi liquid versus non-Fermi liquid behaviours of physical quantities in hole-doped cuprates can be explained in terms of the FL* fractionalized Fermi liquid concept, introduced some years ago, even beyond the region of underdoping. The particle excitations of this F...
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| Format: | Article |
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MDPI AG
2023-03-01
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| Series: | Condensed Matter |
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| Online Access: | https://www.mdpi.com/2410-3896/8/2/30 |
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| author | Pieralberto Marchetti |
| author_facet | Pieralberto Marchetti |
| author_sort | Pieralberto Marchetti |
| collection | DOAJ |
| description | We propose that some dichotomic Fermi liquid versus non-Fermi liquid behaviours of physical quantities in hole-doped cuprates can be explained in terms of the FL* fractionalized Fermi liquid concept, introduced some years ago, even beyond the region of underdoping. The particle excitations of this FL* system are the holon carrying charge, the spinon carrying spin 1/2, gauge fluctuations coupling them and the hole as a spinon–holon bound state or resonance due to gauge binding. In our proposal, physical responses have a Fermi-liquid-type behaviour if they are dominated by the hole resonance, whereas a non-Fermi liquid behaviour appears if they are dominated by spinon–spinon (and possibly also holon–holon) gauge interactions. The specific case of spin susceptibility in the so-called "strange metal phase" is discussed. The uniform susceptibility turns out to be hole-dominated, the spin-lattice relaxation rate in the Cu sites is spinon-dominated. |
| first_indexed | 2024-03-11T02:36:35Z |
| format | Article |
| id | doaj.art-2e99c85879cc438e94951355a61ab461 |
| institution | Directory Open Access Journal |
| issn | 2410-3896 |
| language | English |
| last_indexed | 2024-03-11T02:36:35Z |
| publishDate | 2023-03-01 |
| publisher | MDPI AG |
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| series | Condensed Matter |
| spelling | doaj.art-2e99c85879cc438e94951355a61ab4612023-11-18T09:54:24ZengMDPI AGCondensed Matter2410-38962023-03-01823010.3390/condmat8020030FL* Interpretation of a Dichotomy in the Spin Susceptibility of the CupratesPieralberto Marchetti0Dipartimento di Fisica e Astronomia, Università di Padova, INFN, I-35131 Padova, ItalyWe propose that some dichotomic Fermi liquid versus non-Fermi liquid behaviours of physical quantities in hole-doped cuprates can be explained in terms of the FL* fractionalized Fermi liquid concept, introduced some years ago, even beyond the region of underdoping. The particle excitations of this FL* system are the holon carrying charge, the spinon carrying spin 1/2, gauge fluctuations coupling them and the hole as a spinon–holon bound state or resonance due to gauge binding. In our proposal, physical responses have a Fermi-liquid-type behaviour if they are dominated by the hole resonance, whereas a non-Fermi liquid behaviour appears if they are dominated by spinon–spinon (and possibly also holon–holon) gauge interactions. The specific case of spin susceptibility in the so-called "strange metal phase" is discussed. The uniform susceptibility turns out to be hole-dominated, the spin-lattice relaxation rate in the Cu sites is spinon-dominated.https://www.mdpi.com/2410-3896/8/2/30cupratesfractionalized Fermi liquid<i>t-J</i> model |
| spellingShingle | Pieralberto Marchetti FL* Interpretation of a Dichotomy in the Spin Susceptibility of the Cuprates Condensed Matter cuprates fractionalized Fermi liquid <i>t-J</i> model |
| title | FL* Interpretation of a Dichotomy in the Spin Susceptibility of the Cuprates |
| title_full | FL* Interpretation of a Dichotomy in the Spin Susceptibility of the Cuprates |
| title_fullStr | FL* Interpretation of a Dichotomy in the Spin Susceptibility of the Cuprates |
| title_full_unstemmed | FL* Interpretation of a Dichotomy in the Spin Susceptibility of the Cuprates |
| title_short | FL* Interpretation of a Dichotomy in the Spin Susceptibility of the Cuprates |
| title_sort | fl interpretation of a dichotomy in the spin susceptibility of the cuprates |
| topic | cuprates fractionalized Fermi liquid <i>t-J</i> model |
| url | https://www.mdpi.com/2410-3896/8/2/30 |
| work_keys_str_mv | AT pieralbertomarchetti flinterpretationofadichotomyinthespinsusceptibilityofthecuprates |