Observation of topological Dirac fermions and surface states in superconducting 
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Huang, Kui; Luo, Aiyun; Chen, C.; Zhang, G. N.; Liu, X. L.; Li, Y. W.; Wu, Fan; Cui, Shengtao; Sun, Zhe; Bostwick, Aaron; Rotenberg, Eli; Yang, Huaixin; Yang, Lexian; Xu, Gang; Guo, Yanfeng; Liu, Z. K.; Chen, Y. L.

doi:10.1103/physrevb.103.155148

Cited by 10 publications

(2 citation statements)

References 62 publications

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“…Some experiments have compared the two by using the different characterizations between linear and circular polarization, enhancing the tunability of optical control over magnetism. For example, McIver et al demonstrated that upon illuminating the topological insulator Bi 2 Se 3 with CPL, a photocurrent is generated, originating from topological helical Dirac Fermions, , as shown in Figure b and Figure c. The direction of the photocurrent can be reversed by changing the helicity of the light.…”

Section: Light Modulation Of Magnetismmentioning

confidence: 99%

Perspectives: Light Control of Magnetism and Device Development

Fang,

Wu,

Zhang

et al. 2024

ACS Nano

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Accurately controlling magnetic and spin states presents a significant challenge in spintronics, especially as demands for higher data storage density and increased processing speeds grow. Approaches such as light control are gradually supplanting traditional magnetic field methods. Traditionally, the modulation of magnetism was predominantly achieved through polarized light with the help of ultrafast light technologies. With the growing demand for energy efficiency and multifunctionality in spintronic devices, integrating photovoltaic materials into magnetoelectric systems has introduced more physical effects. This development suggests that sunlight will play an increasingly pivotal role in manipulating spin orientation in the future. This review introduces and concludes the influence of various light types on magnetism, exploring mechanisms such as magneto-optical (MO) effects, light-induced magnetic phase transitions, and spin photovoltaic effects. This review briefly summarizes recent advancements in the light control of magnetism, especially sunlight, and their potential applications, providing an optimistic perspective on future research directions in this area.

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Section: Light Modulation Of Magnetismmentioning

confidence: 99%

Perspectives: Light Control of Magnetism and Device Development

Fang,

Wu,

Zhang

et al. 2024

ACS Nano

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“…Encouraged by the success of Fe(Se, Te) [25][26][27] , many topological materials that host both superconductivity and topological electronic structures are proposed [51][52][53][54][55][56] . However, very rare experimental progress of TSC has been made in such SCTMs.…”

Section: Introductionmentioning

confidence: 99%

Topological superconductor candidates PdBi2Te4 and PdBi2Te5 from a generic ab initio strategy

Luo,

Li,

Qin

et al. 2023

npj Comput Mater

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Superconducting topological metals (SCTMs) have recently emerged as a promising platform of topological superconductivity (TSC) and Majorana zero modes for quantum computation. Despite their importance in both fundamental research and applications, SCTMs are very rare in nature. Here, we propose a strategy to design SCTMs by intercalating the superconducting units into the topological insulators. A program that characterizes the superconducting BdG Chern number of 2D BdG Hamiltonian from ab initio calculations is also developed. Following this strategy, PdBi2Te5 and PdBi2Te4 are found to be experimentally synthesizable and ideal SCTMs. Chiral TSC could be realized in such SCTMs by incorporating topological surface states with Zeeman effect, which can be realized by an external magnetic field or in proximity to ferromagnetic insulator. Our strategy provides a new method for identifying the SCTMs and TSC candidates, and the program makes it possible to design and modulate the TSC candidates from ab initio calculations.

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