Description: Weyl semimetals are a class of materials that exhibit unique electronic properties, characterized by the existence of Weyl fermions, which are quasiparticles that behave like massless particles. These materials are distinguished by their band structure, where Weyl points act as nodes in momentum space, allowing electrons to move without resistance in certain directions. This property is due to the topology of the band, which gives Weyl semimetals high electronic mobility and unusual responses to magnetic and electric fields. Additionally, their quantum behavior can be harnessed in quantum computing applications, where qubit manipulation is essential. Research on Weyl semimetals has grown in recent decades, driven by their potential to revolutionize electronics and quantum computing, offering new pathways for the development of more efficient and faster devices. Their study not only opens doors to new technologies but also provides a deeper understanding of material physics and their quantum interactions.
History: The concept of Weyl semimetals was introduced by physicist Hermann Weyl in 1929, although their relevance in material physics was not fully recognized until the 21st century. In 2015, the first Weyl semimetals, such as TaAs, were experimentally confirmed, marking a milestone in the research of topological materials. Since then, there has been a significant increase in interest in these materials, driven by their unique electronic properties and potential in advanced technological applications.
Uses: Weyl semimetals have promising applications in electronics and quantum computing. Their high electronic mobility and topological properties make them ideal for the development of more efficient electronic devices, such as transistors and sensors. In the realm of quantum computing, they are being explored for the creation of robust qubits that can operate at higher temperatures and with less decoherence, which could facilitate the construction of more practical and accessible quantum computers.
Examples: A notable example of a Weyl semimetal is TaAs, which has been the subject of numerous studies due to its exceptional electronic properties. Another example is NbP, which has also exhibited Weyl fermion characteristics and is being researched for its potential in advanced electronic applications.
