当前位置: X-MOL 学术Phys. Rev. B › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Universal fluctuating regime in triangular chromate antiferromagnets
Physical Review B ( IF 3.2 ) Pub Date : 2021-09-22 , DOI: 10.1103/physrevb.104.104422
K. Somesh 1 , Y. Furukawa 2 , G. Simutis 3 , F. Bert 3 , M. Prinz-Zwick 4 , N. Büttgen 4 , A. Zorko 5, 6 , A. A. Tsirlin 7 , P. Mendels 3 , R. Nath 1
Affiliation  

We report x-ray diffraction, magnetic susceptibility, heat capacity, H1 nuclear magnetic resonance (NMR), and muon spin relaxation (μSR) measurements, as well as density-functional band-structure calculations for the frustrated S=3/2 triangular lattice Heisenberg antiferromagnet (TLHAF) αHCrO2 (trigonal, space group: R3¯m). This compound undergoes a clear magnetic transition at TN22.5 K, as seen from the drop in the muon paramagnetic fraction and concurrent anomalies in the magnetic susceptibility and specific heat capacity. Local probes (NMR and μSR) reveal a broad regime with slow fluctuations down to 0.7TN, this temperature corresponding to the maximum in the μSR relaxation rate and in the NMR wipe-out. From the comparison with NaCrO2 and αKCrO2, the fluctuating regime and slow dynamics below TN appear to be hallmarks of the TLHAF with ABC stacking. We discuss the role of interlayer frustration, which may have impacted recent spin-liquid candidates with triangular geometry.

中文翻译:

三角形铬酸盐反铁磁体中的普遍波动机制

我们报告了 X 射线衍射、磁化率、热容、 H1 核磁共振 (NMR) 和 μ 子自旋弛豫 (μSR) 测量,以及受挫的密度泛函能带结构计算 =3/2 三角晶格海森堡反铁磁体 (TLHAF) α-氯化氢2 (三角,空间群: 电阻3¯)。该化合物在N22.5 K,从μ子顺磁部分的下降和磁化率和比热容的并发异常可以看出。局部探针(核磁共振和μSR) 揭示了一个缓慢波动的广泛制度 0.7N,该温度对应于 μSR弛豫率和 NMR 消除。从与氯化钠2α-氯化钾2,下面的波动状态和缓慢的动态 N 似乎是 TLHAF 的标志 一种C堆叠。我们讨论了夹层挫折的作用,这可能影响了最近具有三角形几何形状的自旋液体候选者。
更新日期:2021-09-22
down
wechat
bug