Thermodynamic Evidence for Density Wave Order in Two Dimensional 4He Supersolid
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arXiv
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| Autores principales: | , , , , , |
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| Formato: | Preprint |
| Publicado: |
2024
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| _version_ | 1866912225048920064 |
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| author | Knapp, J. Nyeki, J. Patel, H. Ziouzia, F Cowan, B. P. Saunders, J. |
| author_facet | Knapp, J. Nyeki, J. Patel, H. Ziouzia, F Cowan, B. P. Saunders, J. |
| contents | We previously reported the discovery of a two dimensional $^{4}$He supersolid; a state with intertwined density wave and superfluid order, observed in the second layer of $^{4}$He adsorbed on graphite. In this Letter we provide direct evidence for the density wave order, obtained by doping the layer with a small concentration of $^{3}$He atoms (impuritons). The heat capacity, magnetization and NMR relaxation times of the $^{3}$He were measured over a wide temperature range from 200 $μ$K to 500 mK. They provide evidence for changes in the ground state in the second layer film as the amount of $^{4}$He is increased at various fixed $^{3}$He doses. Clear evidence is obtained for a solid second layer film, matching the r\a'egime of superfluid response previously observed in pure $^{4}$He films. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2410_10302 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Thermodynamic Evidence for Density Wave Order in Two Dimensional 4He Supersolid Knapp, J. Nyeki, J. Patel, H. Ziouzia, F Cowan, B. P. Saunders, J. Other Condensed Matter We previously reported the discovery of a two dimensional $^{4}$He supersolid; a state with intertwined density wave and superfluid order, observed in the second layer of $^{4}$He adsorbed on graphite. In this Letter we provide direct evidence for the density wave order, obtained by doping the layer with a small concentration of $^{3}$He atoms (impuritons). The heat capacity, magnetization and NMR relaxation times of the $^{3}$He were measured over a wide temperature range from 200 $μ$K to 500 mK. They provide evidence for changes in the ground state in the second layer film as the amount of $^{4}$He is increased at various fixed $^{3}$He doses. Clear evidence is obtained for a solid second layer film, matching the r\a'egime of superfluid response previously observed in pure $^{4}$He films. |
| title | Thermodynamic Evidence for Density Wave Order in Two Dimensional 4He Supersolid |
| topic | Other Condensed Matter |
| url | https://arxiv.org/abs/2410.10302 |