在被辐射的节点表面上进行花束分析,该半金属具有非对称对称的非对称性
1Netaji Mahavidyalaya, Arambagh, West Bengal 712601, India.
Journal of physics. Condensed matter : an Institute of Physics journal
|November 25, 2024
概括
光照射可以在节点表面半金属 (NSSM) 中诱导新的韦尔点. 研究人员研究了具有零和非零拓电荷的NSSM,发现极化影响了这些拓特征的出现和消灭.
科学领域:
- 凝聚物质物理学 凝聚物质物理学
- 拓学是材料科学领域的专业.
背景情况:
- 节点表面半金属 (NSSM) 在3D Brillouin区域内的表面上具有对称强制带交叉.
- 在NSSM中的拓稳定性并不总是与非零的Berry流相相关.
- NSSM可以根据其拓电荷进行分类,具有零或非零值.
研究的目的:
- 研究光照射对具有不同拓电荷的NSSM的影响.
- 在光线下探索Floquet Hamiltonians中韦尔点和节点表面的出现.
- 在驱动的NSSM系统中分析连续性哈密尔顿人的低能量的行为和演变.
主要方法:
- 考虑了两种类型的NSSM:一种具有零,另一种具有非零的拓电荷.
- 研究了极化光照射对这些NSSM的影响.
- 使用简单的两带模型 (无旋转/旋转偏振) 没有旋转轨道合.
- 分析了Floquet系统的高频极限和带交叉附近的连续性哈密尔顿.
主要成果:
- 光照射可以根据极化状态诱导额外的韦尔点或节点表面.
- 在Floquet系统中,NSSM可能会消失,或者可能会出现新的多维尔点.
- 在驱动的NSSM中分析了连续性哈密尔顿的演变,突出了两极化依赖的效应.
- 零和非零的拓电荷NSSM在光照射下表现出显著的变化.
结论:
- 光照射提供了一个强大的工具来操纵NSSM的拓特征.
- 光的极化在控制韦尔点和NSSM的出现和消灭方面发挥着至关重要的作用.
- 失衡的NSSM系统为量子计算和其他先进应用提供了令人兴奋的机会.
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