Phase diagram of Ce Sb 2 from magnetostriction and magnetization measurements: Evidence for ferrimagnetic and antiferromagnetic states
Phase diagram of Ce Sb 2 from magnetostriction and magnetization measurements: Evidence for ferrimagnetic and antiferromagnetic states
复制标题
磁致伸缩和磁化测量得到的 Ce Sb 2 相图：亚铁磁和反铁磁态的证据
DOI：
10.1103/physrevb.104.205134
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发表时间：
2021
影响因子：
3.7
通讯作者：
Trainer C
中科院分区：
文献类型：
--
作者：
Trainer C
二锑化铈(Ce)是一类表现出超磁性的稀土基磁性材料，可以通过施加磁场来控制磁性基态。在低温下，具有丰富的相图，具有多个磁有序相，其中许多相的序参数只被很少地理解。本文报道了用扫描隧道显微镜(STM)和磁化强度测量研究其超磁性质。我们使用STM测量来表征样品的磁致伸缩，从磁场和温度扫描获得亚皮量级的分辨率。这使我们能够直接评估作为场和温度的函数的体相图，并将从隧道光谱到体相的光谱特征联系起来。我们的磁致伸缩和磁化强度测量表明，零场低温基态是亚铁磁性的。准粒子干涉图显示了进入磁有序相后费米能量附近的电子结构重建的证据。
Cerium diantimonide () is one of a family of rare-earth-based magnetic materials that exhibit metamagnetism, enabling control of the magnetic ground state through an applied magnetic field. At low temperatures,hosts a rich phase diagram with multiple magnetically ordered phases for many of which the order parameter is only poorly understood. In this paper, we report a study of its metamagnetic properties by scanning tunneling microscopy (STM) and magnetization measurements. We use STM measurements to characterize the sample magnetostriction with subpicometer resolution from magnetic field and temperature sweeps. This allows us to directly assess the bulk phase diagram as a function of field and temperature and relate spectroscopic features from tunneling spectroscopy to bulk phases. Our magnetostriction and magnetization measurements indicate that the low-temperature ground state at zero field is ferrimagnetic. Quasiparticle interference mapping shows evidence for a reconstruction of the electronic structure close to the Fermi energy upon entering the magnetically ordered phase.