Terahertz excitations in α-RuCl_3: Majorana fermions and rigid-plane shear and compression modes

Reschke S.; Tsurkan V; Do S-H; Choi K-Y; Lunkenheimer P.; Wang Zhe; Loidl A.

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Terahertz excitations in α-RuCl_3: Majorana fermions and rigid-plane shear and compression modes

机译：在α-rucl_3中的太赫兹激动：Majorana Comions和刚性平面剪切和压缩模式

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Spin liquids may host emergent quasiparticles, collective excitations of the spin degrees of freedom with characteristic features of Majorana fermions, which experimentally are detectable by broad excitation continua due to spin fractionalization. The latter is predicted for the Kitaev spin liquid, an exactly solvable model with bond-dependent interactions on a two-dimensional honeycomb lattice. Here we report on detailed terahertz experiments in alpha-RuCl3, identifying these characteristic fingerprints of Majorana fermions. The continuum intensity decreases and finally vanishes on increasing temperature. It partly overlaps with phonon modes, representing characteristic sliding and compression modes of the van der Waals bonded molecular layers.

机译：旋转液体可能举办紧急Quasiply，旋转自由度的集体激励具有Majorana Fermimons的特征特征，其通过旋转成分化而通过广泛的激励连续进行实验地检测。后者预测了Kitaev旋转液体，具有与二维蜂窝晶格上的结合依赖性相互作用的完全可溶性模型。在这里，我们在alpha-rucl3中报告详细的太赫兹实验，识别了Majorana fermions的这些特征指纹。连续素强度降低，最终会在增加温度时消失。它部分与声子模式重叠，表示van der WALS键合分子层的特征滑动和压缩模式。

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《Physical review》 |2019年第10期|100403.1-100403.6|共6页
作者
Reschke S.; Tsurkan V; Do S-H; Choi K-Y; Lunkenheimer P.; Wang Zhe; Loidl A.;
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Univ Augsburg Ctr Elect Correlat & Magnetism Expt Phys 5 D-86159 Augsburg Germany;

Univ Augsburg Ctr Elect Correlat & Magnetism Expt Phys 5 D-86159 Augsburg Germany|Inst Appl Phys MD-2028 Kishinev Moldova;

Chung Ang Univ Dept Phys Seoul 06974 South Korea;

Chung Ang Univ Dept Phys Seoul 06974 South Korea;

Univ Augsburg Ctr Elect Correlat & Magnetism Expt Phys 5 D-86159 Augsburg Germany;

Helmholtz Zentrum Dresden Rossendorf Inst Radiat Phys D-01328 Dresden Germany|Univ Cologne Inst Phys 2 D-50937 Cologne Germany;

Univ Augsburg Ctr Elect Correlat & Magnetism Expt Phys 5 D-86159 Augsburg Germany;

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1. Terahertz excitations in alpha-RuCl3: Majorana fermions and rigid-plane shear and compression modes [J] . Reschke S., Tsurkan V, Do S-H, Physical review, B . 2019,第10期

机译：在Alpha-RuCl3中的太赫兹激动：Majorana Comions和刚性平面剪切和压缩模式
2. Fermi Volume Evolution and Crystal-Field Excitations in Heavy-Fermion Compounds Probed by Time-Domain Terahertz Spectroscopy [J] . Pal S., Wetli C., Zamani F., Physical review letters . 2019,第9期

机译：时域太赫兹光谱探测重铁化合物中的费米体积演化和晶体场激发
3. Realizing Majorana fermion modes in the Kitaev model [J] . Lu Yang, Jia-Xing Zhang, Shuang Liang, 中国物理：英文版 . 2021,第011期

机译：在Kitaev模型中实现Majorana Fermion模式
4. Analytical 3D-analysis of compressional wave excitation by thickness-shear-mode resonators [C] . Beigelbeck R., Jakoby B. IEEE Sensors . 2005

机译：厚度剪切模式谐振器的压缩波激励分析3D分析
5. Detecting Majorana Fermion Induced Crossed Andreev Reflection [D] . Fang, Lei. 2017

机译：检测马里亚纳费米子引起的交叉安德烈耶夫反射
6. Topological quantum computation based on chiral Majorana fermions [O] . Biao Lian, Xiao-Qi Sun, Abolhassan Vaezi, 2018

机译：基于手性马约拉那费米子的拓扑量子计算
7. Terahertz excitations in α−RuCl3 : Majorana fermions and rigid-plane shear and compression modes [O] . S. Reschke, V. Tsurkan, S.-H. Do, 2019

机译：在α-RuCl3中的太赫兹激动：Majorana Comions和刚性平面剪切和压缩模式

Terahertz excitations in α-RuCl_3: Majorana fermions and rigid-plane shear and compression modes

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