Pressure-Induced Charge-Order Melting and Reentrant Charge Carrier Localization in the Mixed-Valent Pb3Rh7O15
The mixed-valent Pb3Rh7O15 undergoes a Verwey-type transition at Tv≈180K, below which the development of Rh3＋3＋/Rh4＋4＋ charge order induces an abrupt conductor-to-insulator transition in resistivity. Here we investigate the effect of pressure on the Verwey-type transition of Pb3Rh7O15 by measuring i...
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| Published in | Chinese physics letters Vol. 34; no. 8; pp. 117 - 120 |
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| Main Author | |
| Format | Journal Article |
| Language | English |
| Published |
United States
IOP Publishing
01.07.2017
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| Subjects | |
| Online Access | Get full text |
| ISSN | 0256-307X 1741-3540 |
| DOI | 10.1088/0256-307X/34/8/087201 |
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| Abstract | The mixed-valent Pb3Rh7O15 undergoes a Verwey-type transition at Tv≈180K, below which the development of Rh3＋3＋/Rh4＋4＋ charge order induces an abrupt conductor-to-insulator transition in resistivity. Here we investigate the effect of pressure on the Verwey-type transition of Pb3Rh7O15 by measuring its electrical resistivity under hydrostatic pressures up to 8GPa with a cubic anvil cell apparatus. We find that the application of high pressure can suppress the Verwey-type transition around 3GPa, above which a metallic state is realized at temperatures below ～70K, suggesting the melting of charge order by pressure. Interestingly, the low-temperature metallic region shrinks gradually upon further increasing pressure and disappears completely at P〉7GPa, which indicates that the charge carriers in Pb3Rh7O15 undergo a reentrant localization under higher pressures. We have constructed a temperature-pressure phase diagram for Pb3Rh7O15 and compared to that of Fe3O4, showing an archetype Verwey transition. |
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| AbstractList | The mixed-valent Pb3Rh7O15 undergoes a Verwey-type transition at Tv≈180K, below which the development of Rh3＋3＋/Rh4＋4＋ charge order induces an abrupt conductor-to-insulator transition in resistivity. Here we investigate the effect of pressure on the Verwey-type transition of Pb3Rh7O15 by measuring its electrical resistivity under hydrostatic pressures up to 8GPa with a cubic anvil cell apparatus. We find that the application of high pressure can suppress the Verwey-type transition around 3GPa, above which a metallic state is realized at temperatures below ～70K, suggesting the melting of charge order by pressure. Interestingly, the low-temperature metallic region shrinks gradually upon further increasing pressure and disappears completely at P〉7GPa, which indicates that the charge carriers in Pb3Rh7O15 undergo a reentrant localization under higher pressures. We have constructed a temperature-pressure phase diagram for Pb3Rh7O15 and compared to that of Fe3O4, showing an archetype Verwey transition. Here, the mixed-valent Pb_{3}$Rh _{7}$O_{15}$ undergoes a Verwey-type transition at ${T}_{{\rm{v}}}\approx 180$ K, below which the development of Rh^{3+}$ /Rh^{4+}$ charge order induces an abrupt conductor-to-insulator transition in resistivity. Here we investigate the effect of pressure on the Verwey-type transition of Pb_{3}$Rh_{7}$O_{15}$ by measuring its electrical resistivity under hydrostatic pressures up to 8 GPa with a cubic anvil cell apparatus. We find that the application of high pressure can suppress the Verwey-type transition around 3 GPa, above which a metallic state is realized at temperatures below ~70 K, suggesting the melting of charge order by pressure. Interestingly, the low-temperature metallic region shrinks gradually upon further increasing pressure and disappears completely at P > 7 GPa, which indicates that the charge carriers in Pb_{3}$Rh_{7}$O_{15}$ undergo a reentrant localization under higher pressures. We have constructed a temperature-pressure phase diagram for Pb_{3}$Rh_{7}$O_{15}$ and compared to that of Fe_{3}$O_{4}$, showing an archetype Verwey transition. |
| Author | 李妍 孙朝 蔡嘉伟 孙建平 王铂森 赵志颖 Y. Uwatoko 闫加强 程金光 |
| AuthorAffiliation | College of Materials Science and Engineering, Beijing Institute of Petrochemical Technology, Beijing 102617 Beijing National Laboratory for Condensed Matter Physics and Institute of Physics, Chinese Academy of Sciences, Beijing 100190 Materials Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA Department of Physics and Astronomy, University of Tennessee, Knoxville, TN 37996, USA The Institute for Solid State Physics, University of Tokyo, Kashiwa, Chiba 277-8581, Japan University of Chinese Academy of Sciences, Beijing 100049 |
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| DocumentTitleAlternate | Pressure-Induced Charge-Order Melting and Reentrant Charge Carrier Localization in the Mixed-Valent Pb3Rh7O15 |
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| Notes | Yan Li1, Zhao Sun1, Jia-Wei Cai1, Jian-Ping Sun2,6, Bo-Sen Wang2,6, Zhi-Ying Zhao3,4, Y. Uwatoko5, Jia-Qiang Yan3, Jin-Guang Cheng2,6（1.College of Materials Science and Engineering, Beijing Institute of Petrochemical Technology, Beijing 102617;2.Beijing National Laboratory for Condensed Matter Physics and Institute of Physics, Chinese Academy of Sciences, Beijing 100190;3.Materials Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA;4.Department of Physics and Astronomy, University of Tennessee, Knoxville, TN 37996, USA;5.The Institute for Solid State Physics, University of Tokyo, Kashiwa, Chiba 277-8581, Japan;6.University of Chinese Academy of Sciences, Beijing 100049） 11-1959/O4 The mixed-valent Pb3Rh7O15 undergoes a Verwey-type transition at Tv≈180K, below which the development of Rh3＋3＋/Rh4＋4＋ charge order induces an abrupt conductor-to-insulator transition in resistivity. Here we investigate the effect of pressure on the Verwey-type transition of Pb3Rh7O15 by measuring its electrical resistivity under hydrostatic pressures up to 8GPa with a cubic anvil cell apparatus. We find that the application of high pressure can suppress the Verwey-type transition around 3GPa, above which a metallic state is realized at temperatures below ～70K, suggesting the melting of charge order by pressure. Interestingly, the low-temperature metallic region shrinks gradually upon further increasing pressure and disappears completely at P〉7GPa, which indicates that the charge carriers in Pb3Rh7O15 undergo a reentrant localization under higher pressures. We have constructed a temperature-pressure phase diagram for Pb3Rh7O15 and compared to that of Fe3O4, showing an archetype Verwey transition. USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22) AC05-00OR22725 |
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| Snippet | The mixed-valent Pb3Rh7O15 undergoes a Verwey-type transition at Tv≈180K, below which the development of Rh3＋3＋/Rh4＋4＋ charge order induces an abrupt... Here, the mixed-valent Pb_{3}$Rh _{7}$O_{15}$ undergoes a Verwey-type transition at ${T}_{{\rm{v}}}\approx 180$ K, below which the development of Rh^{3+}$... |
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| StartPage | 117 |
| SubjectTerms | CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY 体电阻率 压力诱导 定位 折返 混合价 熔化 电荷有序 电荷载体 |
| Title | Pressure-Induced Charge-Order Melting and Reentrant Charge Carrier Localization in the Mixed-Valent Pb3Rh7O15 |
| URI | http://lib.cqvip.com/qk/84212X/201708/673110271.html https://www.osti.gov/servlets/purl/1399944 |
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