Synthesis and Properties of Charge-Ordered Thallium Halide Perovskites, CsTl0.5+Tl0.53+X3 (X = F or Cl): Theoretical Precursors for Superconductivity?
文献类型：期刊论文
| 作者 | Retuerto, M ; Emge, T ; Hadermann, J ; Stephens, PW ; Li, MR ; Yin, ZP ; Croft, M ; Ignatov, A ; Zhang, SJ ; Yuan, Z ; Jin, C ; Simonson, JW ; Aronson, MC ; Pan, A ; Basov, DN ; Kotliar, G ; Greenblatt, M |
| 刊名 | CHEMISTRY OF MATERIALS
 |
| 出版日期 | 2013 |
| 卷号 | 25期号:20页码:4071 |
| 关键词 | superconductivity mixed valence charge order CsTlCl3 CsTlF3 CsAuCl3 BaBiO3 |
| ISSN号 | 0897-4756 |
| 通讯作者 | Greenblatt, M (reprint author), Rutgers State Univ, Dept Chem & Chem Biol, 610 Taylor Rd, Piscataway, NJ 08854 USA. |
| 中文摘要 | Recently, CsTlCl3 and CsTlF3 perovskites were theoretically predicted to be potential superconductors if they were optimally doped. The syntheses of these two compounds together with a complete characterization of the samples are reported. CsTlCl3 was obtained as orange crystals in two different polymorphs: a tetragonal phase (I4/m) and a cubic phase (Fm (3) over barm). CsTlF3 was formed as a light brown powder, and also as a double cubic perovskite (Fm (3) over barm). In all three CsTlX3 phases, Tl+ and Tl3+ were located in two different crystallographic positions that accommodate their different bond lengths. In CsTlCl3, some Tl vacancies were found in the Tl+ position. The charge ordering between Tl+ and Tl3+ was confirmed by X-ray absorption and Raman spectroscopy. The Raman spectroscopy of CsTlCl3 at high pressure (58 GPa) did not indicate any phase transition to a possible single Tl2+ state. However, the highly insulating material became less resistive with an increasing high pressure, while it underwent a change in its optical properties, from transparent to deeply opaque red, indicative of a decrease in the magnitude of the band gap. The theoretical design and experimental validation of the existence of CsTlF3 and CsTlCl3 cubic perovskites are the necessary first steps in confirming the theoretical prediction of superconductivity in these materials. |
| 资助信息 | National Science Foundation [DMR-0966829]; U.S. Department of Defense [VV911NF-12-1-0172]; Rutgers University (BOG); AFOSR-MURI program; U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences [DE-AC02-98CH10886] |
| 语种 | 英语 |
| 公开日期 | 2014-01-17 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/57540]  |
| 专题 | 物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文 |
| 推荐引用方式 GB/T 7714 | Retuerto, M,Emge, T,Hadermann, J,et al. Synthesis and Properties of Charge-Ordered Thallium Halide Perovskites, CsTl0.5+Tl0.53+X3 (X = F or Cl): Theoretical Precursors for Superconductivity?[J]. CHEMISTRY OF MATERIALS,2013,25(20):4071. |
| APA | Retuerto, M.,Emge, T.,Hadermann, J.,Stephens, PW.,Li, MR.,...&Greenblatt, M.(2013).Synthesis and Properties of Charge-Ordered Thallium Halide Perovskites, CsTl0.5+Tl0.53+X3 (X = F or Cl): Theoretical Precursors for Superconductivity?.CHEMISTRY OF MATERIALS,25(20),4071. |
| MLA | Retuerto, M,et al."Synthesis and Properties of Charge-Ordered Thallium Halide Perovskites, CsTl0.5+Tl0.53+X3 (X = F or Cl): Theoretical Precursors for Superconductivity?".CHEMISTRY OF MATERIALS 25.20(2013):4071. |
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来源：物理研究所
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