Cluster spin-glass ground state in quasi-one-dimensional KCr$_{3}$As$_{3}$
Autor: | Bao, Jin-Ke, Li, Lin, Tang, Zhang-Tu, Liu, Yi, Li, Yu-Ke, Bai, Hua, Feng, Chun-Mu, Xu, Zhu-An, Cao, Guang-Han |
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Rok vydání: | 2015 |
Předmět: | |
Zdroj: | Physical Review B 91, 180404(R) (2015) |
Druh dokumentu: | Working Paper |
DOI: | 10.1103/PhysRevB.91.180404 |
Popis: | We report structural and physical properties of a new quasi-one-dimensional Cr-based compound, KCr$_{3}$As$_{3}$, which is prepared by potassium deintercalation from the superconductive K$_{2}$Cr$_{3}$As$_{3}$. KCr$_{3}$As$_{3}$ adopts the TlFe$_{3}$Te$_{3}$-type structure with space group $P6_{3}$/$m$ (No. 176). The high-temperature magnetic susceptibility obeys the Curie-Weiss law with an effective magnetic moment of 0.68 $\mu_{\mathrm{B}}$/Cr. Below 56 K the susceptibility deviates from the high-temperature Curie-Weiss behavior, coinciding with the rapid increase in resistivity, which suggests formation of spin clusters. The short-range spin correlations are also supported by the specific-heat data. The title material does not exhibit bulk superconductivity; instead, it shows a cluster spin-glass state below $\sim$ 5 K. Comment: 5 pages, 4 figures |
Databáze: | arXiv |
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