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Title: Pressure-Induced Charge-Order Melting and Reentrant Charge Carrier Localization in the Mixed-Valent Pb 3Rh 7O 15

Abstract

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.

Authors:
 [1];  [1];  [1];  [2];  [2];  [3];  [4]; ORCiD logo [5];  [2]
  1. Beijing Institute of Petrochemical Technology, Beijing (China)
  2. Chinese Academy of Sciences (CAS), Beijing (China); Univ. of Chinese Academy of Sciences, Beijing (China)
  3. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Univ. of Tennessee, Knoxville, TN (United States)
  4. Univ. of Tokyo, Chiba (Japan)
  5. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
OSTI Identifier:
1399944
Grant/Contract Number:
AC05-00OR22725
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Chinese Physics Letters
Additional Journal Information:
Journal Volume: 34; Journal Issue: 8; Journal ID: ISSN 0256-307X
Publisher:
IOP Publishing
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY

Citation Formats

Li, Yan, Sun, Zhao, Cai, Jia -Wei, Sun, Jian -Ping, Wang, Bo -Sen, Zhao, Zhi -Ying, Uwatoko, Y., Yan, Jia -Qiang, and Cheng, Jin -Guang. Pressure-Induced Charge-Order Melting and Reentrant Charge Carrier Localization in the Mixed-Valent Pb3Rh7O15. United States: N. p., 2017. Web. doi:10.1088/0256-307X/34/8/087201.
Li, Yan, Sun, Zhao, Cai, Jia -Wei, Sun, Jian -Ping, Wang, Bo -Sen, Zhao, Zhi -Ying, Uwatoko, Y., Yan, Jia -Qiang, & Cheng, Jin -Guang. Pressure-Induced Charge-Order Melting and Reentrant Charge Carrier Localization in the Mixed-Valent Pb3Rh7O15. United States. doi:10.1088/0256-307X/34/8/087201.
Li, Yan, Sun, Zhao, Cai, Jia -Wei, Sun, Jian -Ping, Wang, Bo -Sen, Zhao, Zhi -Ying, Uwatoko, Y., Yan, Jia -Qiang, and Cheng, Jin -Guang. Sat . "Pressure-Induced Charge-Order Melting and Reentrant Charge Carrier Localization in the Mixed-Valent Pb3Rh7O15". United States. doi:10.1088/0256-307X/34/8/087201.
@article{osti_1399944,
title = {Pressure-Induced Charge-Order Melting and Reentrant Charge Carrier Localization in the Mixed-Valent Pb3Rh7O15},
author = {Li, Yan and Sun, Zhao and Cai, Jia -Wei and Sun, Jian -Ping and Wang, Bo -Sen and Zhao, Zhi -Ying and Uwatoko, Y. and Yan, Jia -Qiang and Cheng, Jin -Guang},
abstractNote = {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.},
doi = {10.1088/0256-307X/34/8/087201},
journal = {Chinese Physics Letters},
number = 8,
volume = 34,
place = {United States},
year = {Sat Jul 01 00:00:00 EDT 2017},
month = {Sat Jul 01 00:00:00 EDT 2017}
}

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