Spin Dynamics Studied by 77Se Nuclear Spin-Echo Decay Measurements in FeSe

被引：0

作者：

Ota, Yoshihiko ^{[1
]}

Matsushita, Taku ^{[1
]}

Kobayashi, Hiromasa ^{[1
]}

Kobayashi, Yoshiaki ^{[1
]}

机构：

[1] Nagoya Univ, Grad Sch Sci, Dept Phys, Nagoya, Aichi 4648602, Japan

来源：

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN | 2024年 / 93卷 / 03期

关键词：

MAGNETIC-INTERACTIONS; IRON; SUPERCONDUCTIVITY; FRUSTRATION; NEMATICITY; PSEUDOGAP; SYMMETRY; STATE; ORDER;

D O I：

10.7566/JPSJ.93.033701

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We carried out 77Se nuclear magnetic resonance measurement in the iron-chalcogenide superconductor FeSe, which has only orbital order without magnetic order. From the measured 77Se nuclear transverse relaxation rate 1/T2, we evaluate the longitudinal fluctuations near zero frequency uzz(0), which develop on cooling below the structural transition temperature of Ts,nem = 90 K. The contrasting behavior between uzz(0) and the transverse fluctuations at an NMR angular frequency as a nuclear spin-lattice relaxation rate 1/T1(co0) indicates the sensitive change of spin fluctuations against frequency and the manifestation of ultra-slow spin dynamics in FeSe, the latter of which will be discussed in terms of the fluctuating domain walls and magnetic frustration effect.

引用

页数：4

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