Interplay between charge correlations and superconductivity across the superconducting domes of CsV$_{3}$Sb$_{5-x}$Sn$_x$
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arXiv
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| Format: | Preprint |
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2025
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| author | Salinas, Andrea N. Capa Ortiz, Brenden R. Alvarado, Steven J. Gomez Schwarz, Sarah Pokharel, Ganesh Buiarelli, Luca Park, Hyeonseo Harry Yuan, Shiyu Yin, Roland Sarker, Suchismita Birol, Turan Wilson, Stephen D. |
| author_facet | Salinas, Andrea N. Capa Ortiz, Brenden R. Alvarado, Steven J. Gomez Schwarz, Sarah Pokharel, Ganesh Buiarelli, Luca Park, Hyeonseo Harry Yuan, Shiyu Yin, Roland Sarker, Suchismita Birol, Turan Wilson, Stephen D. |
| contents | The kagome metal CsV$_3$Sb$_5$ shows an unconventional interplay between charge density wave (CDW) order and superconductivity. Tuning the band filling is known to rapidly suppress long-range CDW order and drive the formation of two superconducting ``domes" upon increasing hole concentration. Here we determine the detailed evolution of charge correlations across this phase diagram and resolve their interplay with the superconducting state. Upon light hole-doping, the suppression of a metastable $2\times 2\times 4$ CDW state coincides with the suppression of superconducting fluctuations present in the parent CsV$_3$Sb$_5$ compound. Continued doping suppresses long-range $2\times 2\times 2$ CDW order, leaving remnant short-range, quasi-1D correlations that persist across the second superconducting dome. These higher temperature charge correlations are seemingly essential to the lower temperature superconducting state, as charge correlations vanish coincident with superconductivity as a function of hole-doping. A multidomain model of short-range V-V dimer formation within the kagome plane is proposed in the second superconducting dome, where rotational and translational symmetry remain locally broken even in the absence of long-range CDW order. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2512_11177 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Interplay between charge correlations and superconductivity across the superconducting domes of CsV$_{3}$Sb$_{5-x}$Sn$_x$ Salinas, Andrea N. Capa Ortiz, Brenden R. Alvarado, Steven J. Gomez Schwarz, Sarah Pokharel, Ganesh Buiarelli, Luca Park, Hyeonseo Harry Yuan, Shiyu Yin, Roland Sarker, Suchismita Birol, Turan Wilson, Stephen D. Superconductivity Strongly Correlated Electrons The kagome metal CsV$_3$Sb$_5$ shows an unconventional interplay between charge density wave (CDW) order and superconductivity. Tuning the band filling is known to rapidly suppress long-range CDW order and drive the formation of two superconducting ``domes" upon increasing hole concentration. Here we determine the detailed evolution of charge correlations across this phase diagram and resolve their interplay with the superconducting state. Upon light hole-doping, the suppression of a metastable $2\times 2\times 4$ CDW state coincides with the suppression of superconducting fluctuations present in the parent CsV$_3$Sb$_5$ compound. Continued doping suppresses long-range $2\times 2\times 2$ CDW order, leaving remnant short-range, quasi-1D correlations that persist across the second superconducting dome. These higher temperature charge correlations are seemingly essential to the lower temperature superconducting state, as charge correlations vanish coincident with superconductivity as a function of hole-doping. A multidomain model of short-range V-V dimer formation within the kagome plane is proposed in the second superconducting dome, where rotational and translational symmetry remain locally broken even in the absence of long-range CDW order. |
| title | Interplay between charge correlations and superconductivity across the superconducting domes of CsV$_{3}$Sb$_{5-x}$Sn$_x$ |
| topic | Superconductivity Strongly Correlated Electrons |
| url | https://arxiv.org/abs/2512.11177 |