Influence of the Pd-Si ratio on the valence transition in EuPd$_2$Si$_2$ single crystals
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arXiv
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| Format: | Preprint |
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2022
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| author | Kliemt, Kristin Peters, Marius Reiser, Isabel Ocker, Michelle Walther, Franziska Tran, Doan-My Cho, Eunhyung Merz, Michael Haghighirad, Amir A. Hezel, Dominik C. Ritter, Franz Krellner, Cornelius |
| author_facet | Kliemt, Kristin Peters, Marius Reiser, Isabel Ocker, Michelle Walther, Franziska Tran, Doan-My Cho, Eunhyung Merz, Michael Haghighirad, Amir A. Hezel, Dominik C. Ritter, Franz Krellner, Cornelius |
| contents | Single crystals of intermediate valent EuPd$_2$Si$_2$ were grown from an Eu-rich melt by the Bridgman as well as the Czochralski technique. The chemical and structural characterization of an extracted single crystalline Czochralski-grown specimen yielded a slight variation of the Si-Pd ratio along the growth direction and confirms the existence of a finite Eu(Pd$_{1-m}$Si$_m$)$_2$Si$_2$ homogeneity range. The thorough physical characterization carried out on the same crystal showed that this tiny variation in the composition affects the temperature $T_v$ at which the valence transition occurs. These experiments demonstrate a strong coupling between structural and physical properties in the prototypical valence-fluctuating system EuPd$_2$Si$_2$ and explain the different reported values of $T_v$. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2203_05136 |
| institution | arXiv |
| publishDate | 2022 |
| record_format | arxiv |
| spellingShingle | Influence of the Pd-Si ratio on the valence transition in EuPd$_2$Si$_2$ single crystals Kliemt, Kristin Peters, Marius Reiser, Isabel Ocker, Michelle Walther, Franziska Tran, Doan-My Cho, Eunhyung Merz, Michael Haghighirad, Amir A. Hezel, Dominik C. Ritter, Franz Krellner, Cornelius Strongly Correlated Electrons Single crystals of intermediate valent EuPd$_2$Si$_2$ were grown from an Eu-rich melt by the Bridgman as well as the Czochralski technique. The chemical and structural characterization of an extracted single crystalline Czochralski-grown specimen yielded a slight variation of the Si-Pd ratio along the growth direction and confirms the existence of a finite Eu(Pd$_{1-m}$Si$_m$)$_2$Si$_2$ homogeneity range. The thorough physical characterization carried out on the same crystal showed that this tiny variation in the composition affects the temperature $T_v$ at which the valence transition occurs. These experiments demonstrate a strong coupling between structural and physical properties in the prototypical valence-fluctuating system EuPd$_2$Si$_2$ and explain the different reported values of $T_v$. |
| title | Influence of the Pd-Si ratio on the valence transition in EuPd$_2$Si$_2$ single crystals |
| topic | Strongly Correlated Electrons |
| url | https://arxiv.org/abs/2203.05136 |