Hall Effect Anisotropy in the Paramagnetic Phase of Ho<sub>0.8</sub>Lu<sub>0.2</sub>B<sub>12</sub> Induced by Dynamic Charge Stripes
A detailed study of charge transport in the paramagnetic phase of the cage-cluster dodecaboride Ho<sub>0.8</sub>Lu<sub>0.2</sub>B<sub>12</sub> with an instability both of the <i>fcc</i> lattice (cooperative Jahn–Teller effect) and the electronic struct...
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| Format: | Article |
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MDPI AG
2023-01-01
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| Series: | Molecules |
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| author | Artem L. Khoroshilov Kirill M. Krasikov Andrey N. Azarevich Alexey V. Bogach Vladimir V. Glushkov Vladimir N. Krasnorussky Valery V. Voronov Natalya Y. Shitsevalova Volodymyr B. Filipov Slavomir Gabáni Karol Flachbart Nikolay E. Sluchanko |
| author_facet | Artem L. Khoroshilov Kirill M. Krasikov Andrey N. Azarevich Alexey V. Bogach Vladimir V. Glushkov Vladimir N. Krasnorussky Valery V. Voronov Natalya Y. Shitsevalova Volodymyr B. Filipov Slavomir Gabáni Karol Flachbart Nikolay E. Sluchanko |
| author_sort | Artem L. Khoroshilov |
| collection | DOAJ |
| description | A detailed study of charge transport in the paramagnetic phase of the cage-cluster dodecaboride Ho<sub>0.8</sub>Lu<sub>0.2</sub>B<sub>12</sub> with an instability both of the <i>fcc</i> lattice (cooperative Jahn–Teller effect) and the electronic structure (dynamic charge stripes) was carried out at temperatures 1.9–300 K in magnetic fields up to 80 kOe. Four mono-domain single crystals of Ho<sub>0.8</sub>Lu<sub>0.2</sub>B<sub>12</sub> samples with different crystal axis orientation were investigated in order to establish the singularities of Hall effect, which develop due to (i) the electronic phase separation (stripes) and (ii) formation of the disordered cage-glass state below T*~60 K. It was demonstrated that a considerable intrinsic anisotropic positive component ρ<sup>an</sup><sub>xy</sub> appears at low temperatures in addition to the ordinary negative Hall resistivity contribution in magnetic fields above 40 kOe applied along the [001] and [110] axes. A relation between anomalous components of the resistivity tensor ρ<sup>an</sup><sub>xy</sub>~ρ<sup>an</sup><sub>xx</sub><sup>1.7</sup> was found for <b>H</b>||[001] below T*~60 K, and a power law ρ<sup>an</sup><sub>xy</sub>~ρ<sup>an</sup><sub>xx</sub><sup>0.83</sup> for the orientation <b>H</b>||[110] at temperatures T < T<sub>S</sub>~15 K. It is argued that below characteristic temperature T<sub>S</sub>~15 K the anomalous odd ρ<sup>an</sup><sub>xy</sub>(T) and even ρ<sup>an</sup><sub>xx</sub>(T) parts of the resistivity tensor may be interpreted in terms of formation of long chains in the filamentary structure of fluctuating charges (stripes). We assume that these ρ<sup>an</sup><sub>xy</sub>(<b>H</b>||[001]) and ρ<sup>an</sup><sub>xy</sub>(<b>H</b>||[110]) components represent the intrinsic (Berry phase contribution) and extrinsic (skew scattering) mechanism, respectively. Apart from them, an additional ferromagnetic contribution to both isotropic and anisotropic components in the Hall signal was registered and attributed to the effect of magnetic polarization of 5<i>d</i> states (ferromagnetic nano-domains) in the conduction band of Ho<sub>0.8</sub>Lu<sub>0.2</sub>B<sub>12</sub>. |
| first_indexed | 2024-03-09T11:35:44Z |
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| issn | 1420-3049 |
| language | English |
| last_indexed | 2024-03-09T11:35:44Z |
| publishDate | 2023-01-01 |
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| record_format | Article |
| series | Molecules |
| spelling | doaj.art-3bbad4f577e54d3ebf4efb0c666c2f942023-11-30T23:43:11ZengMDPI AGMolecules1420-30492023-01-0128267610.3390/molecules28020676Hall Effect Anisotropy in the Paramagnetic Phase of Ho<sub>0.8</sub>Lu<sub>0.2</sub>B<sub>12</sub> Induced by Dynamic Charge StripesArtem L. Khoroshilov0Kirill M. Krasikov1Andrey N. Azarevich2Alexey V. Bogach3Vladimir V. Glushkov4Vladimir N. Krasnorussky5Valery V. Voronov6Natalya Y. Shitsevalova7Volodymyr B. Filipov8Slavomir Gabáni9Karol Flachbart10Nikolay E. Sluchanko11Prokhorov General Physics Institute of the Russian Academy of Sciences, 38, Vavilov Str., 119991 Moscow, RussiaProkhorov General Physics Institute of the Russian Academy of Sciences, 38, Vavilov Str., 119991 Moscow, RussiaProkhorov General Physics Institute of the Russian Academy of Sciences, 38, Vavilov Str., 119991 Moscow, RussiaProkhorov General Physics Institute of the Russian Academy of Sciences, 38, Vavilov Str., 119991 Moscow, RussiaProkhorov General Physics Institute of the Russian Academy of Sciences, 38, Vavilov Str., 119991 Moscow, RussiaProkhorov General Physics Institute of the Russian Academy of Sciences, 38, Vavilov Str., 119991 Moscow, RussiaProkhorov General Physics Institute of the Russian Academy of Sciences, 38, Vavilov Str., 119991 Moscow, RussiaInstitute for Problems of Materials Science, NASU, Krzhizhanovsky Str., 3, 03142 Kyiv, UkraineInstitute for Problems of Materials Science, NASU, Krzhizhanovsky Str., 3, 03142 Kyiv, UkraineInstitute of Experimental Physics SAS, 47, Watsonova, 04001 Košice, SlovakiaInstitute of Experimental Physics SAS, 47, Watsonova, 04001 Košice, SlovakiaProkhorov General Physics Institute of the Russian Academy of Sciences, 38, Vavilov Str., 119991 Moscow, RussiaA detailed study of charge transport in the paramagnetic phase of the cage-cluster dodecaboride Ho<sub>0.8</sub>Lu<sub>0.2</sub>B<sub>12</sub> with an instability both of the <i>fcc</i> lattice (cooperative Jahn–Teller effect) and the electronic structure (dynamic charge stripes) was carried out at temperatures 1.9–300 K in magnetic fields up to 80 kOe. Four mono-domain single crystals of Ho<sub>0.8</sub>Lu<sub>0.2</sub>B<sub>12</sub> samples with different crystal axis orientation were investigated in order to establish the singularities of Hall effect, which develop due to (i) the electronic phase separation (stripes) and (ii) formation of the disordered cage-glass state below T*~60 K. It was demonstrated that a considerable intrinsic anisotropic positive component ρ<sup>an</sup><sub>xy</sub> appears at low temperatures in addition to the ordinary negative Hall resistivity contribution in magnetic fields above 40 kOe applied along the [001] and [110] axes. A relation between anomalous components of the resistivity tensor ρ<sup>an</sup><sub>xy</sub>~ρ<sup>an</sup><sub>xx</sub><sup>1.7</sup> was found for <b>H</b>||[001] below T*~60 K, and a power law ρ<sup>an</sup><sub>xy</sub>~ρ<sup>an</sup><sub>xx</sub><sup>0.83</sup> for the orientation <b>H</b>||[110] at temperatures T < T<sub>S</sub>~15 K. It is argued that below characteristic temperature T<sub>S</sub>~15 K the anomalous odd ρ<sup>an</sup><sub>xy</sub>(T) and even ρ<sup>an</sup><sub>xx</sub>(T) parts of the resistivity tensor may be interpreted in terms of formation of long chains in the filamentary structure of fluctuating charges (stripes). We assume that these ρ<sup>an</sup><sub>xy</sub>(<b>H</b>||[001]) and ρ<sup>an</sup><sub>xy</sub>(<b>H</b>||[110]) components represent the intrinsic (Berry phase contribution) and extrinsic (skew scattering) mechanism, respectively. Apart from them, an additional ferromagnetic contribution to both isotropic and anisotropic components in the Hall signal was registered and attributed to the effect of magnetic polarization of 5<i>d</i> states (ferromagnetic nano-domains) in the conduction band of Ho<sub>0.8</sub>Lu<sub>0.2</sub>B<sub>12</sub>.https://www.mdpi.com/1420-3049/28/2/676dynamic charge stripesanomalous Hall effectJahn-Teller instability |
| spellingShingle | Artem L. Khoroshilov Kirill M. Krasikov Andrey N. Azarevich Alexey V. Bogach Vladimir V. Glushkov Vladimir N. Krasnorussky Valery V. Voronov Natalya Y. Shitsevalova Volodymyr B. Filipov Slavomir Gabáni Karol Flachbart Nikolay E. Sluchanko Hall Effect Anisotropy in the Paramagnetic Phase of Ho<sub>0.8</sub>Lu<sub>0.2</sub>B<sub>12</sub> Induced by Dynamic Charge Stripes Molecules dynamic charge stripes anomalous Hall effect Jahn-Teller instability |
| title | Hall Effect Anisotropy in the Paramagnetic Phase of Ho<sub>0.8</sub>Lu<sub>0.2</sub>B<sub>12</sub> Induced by Dynamic Charge Stripes |
| title_full | Hall Effect Anisotropy in the Paramagnetic Phase of Ho<sub>0.8</sub>Lu<sub>0.2</sub>B<sub>12</sub> Induced by Dynamic Charge Stripes |
| title_fullStr | Hall Effect Anisotropy in the Paramagnetic Phase of Ho<sub>0.8</sub>Lu<sub>0.2</sub>B<sub>12</sub> Induced by Dynamic Charge Stripes |
| title_full_unstemmed | Hall Effect Anisotropy in the Paramagnetic Phase of Ho<sub>0.8</sub>Lu<sub>0.2</sub>B<sub>12</sub> Induced by Dynamic Charge Stripes |
| title_short | Hall Effect Anisotropy in the Paramagnetic Phase of Ho<sub>0.8</sub>Lu<sub>0.2</sub>B<sub>12</sub> Induced by Dynamic Charge Stripes |
| title_sort | hall effect anisotropy in the paramagnetic phase of ho sub 0 8 sub lu sub 0 2 sub b sub 12 sub induced by dynamic charge stripes |
| topic | dynamic charge stripes anomalous Hall effect Jahn-Teller instability |
| url | https://www.mdpi.com/1420-3049/28/2/676 |
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