CeIr3Ge7: A local moment antiferromagnetic metal with extremely low ordering temperature
| Autor: | Binod K. Rai, Jacintha Banda, Dmitry A. Sokolov, Chien-Lung Huang, Emilia Morosan, Dong-Jin Jang, R. Borth, Katherine A. Benavides, Macy Stavinoha, Michael Nicklas, Manuel Brando, Julia Y. Chan |
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| Rok vydání: | 2018 |
| Předmět: |
Physics
Condensed matter physics media_common.quotation_subject Intermetallic Order (ring theory) Frustration 02 engineering and technology 021001 nanoscience & nanotechnology Coupling (probability) 01 natural sciences Metal Bond length visual_art 0103 physical sciences visual_art.visual_art_medium Antiferromagnetism Condensed Matter::Strongly Correlated Electrons 010306 general physics 0210 nano-technology media_common Local moment |
| Zdroj: | Physical Review B. 98 |
| ISSN: | 2469-9969 2469-9950 |
| DOI: | 10.1103/physrevb.98.195119 |
| Popis: | ${\mathrm{CeIr}}_{3}{\mathrm{Ge}}_{7}$ is an antiferromagnetic metal with a remarkably low ordering temperature ${T}_{\mathrm{N}}=0.63\phantom{\rule{0.28em}{0ex}}\mathrm{K}$, while most Ce-based magnets order between 2 and 15 K. Thermodynamic and transport properties as a function of magnetic field or pressure do not show signatures of Kondo correlations, interaction competition, or frustration, as had been observed in a few antiferromagnets with comparably low or lower ${T}_{\mathrm{N}}$. The averaged Weiss temperature measured below 10 K is comparable to ${T}_{\mathrm{N}}$, suggesting that the Ruderman-Kittel-Kasuya-Yosida exchange coupling is very weak in this material. The unusually low ${T}_{\mathrm{N}}$ in ${\mathrm{CeIr}}_{3}{\mathrm{Ge}}_{7}$ can therefore be attributed to the large Ce-Ce bond length of about 5.7 \AA{}, which is about 1.5 \AA{} larger than in the most Ce-based intermetallic systems. |
| Databáze: | OpenAIRE |
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