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A magnon is a quasiparticle, a collective excitation of the spin structure of an electron in a crystal lattice. In the equivalent wave picture of quantum mechanics, a magnon can be viewed as a quantized spin wave. Magnons carry a fixed amount of energy and lattice momentum, and are spin-1, indicating they obey boson behavior.
Magnetic semiconductors are semiconductor materials that exhibit both ferromagnetism and useful semiconductor properties. If implemented in devices, these materials could provide a new type of control of conduction. Whereas traditional electronics are based on control of charge carriers, practical magnetic semiconductors would also allow control of quantum spin state. This would theoretically provide near-total spin polarization, which is an important property for spintronics applications, e.g. spin transistors.
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In solid-state physics, the kagome metal or kagome magnet is a type of ferromagnetic quantum material. The atomic lattice in a kagome magnet has layered overlapping triangles and large hexagonal voids, akin to the kagome pattern in traditional Japanese basket-weaving. This geometry induces a flat electronic band structure with Dirac crossings, in which the low-energy electron dynamics correlate strongly.
Richard Eric Parry Winpenny FRSC FLSW is a British chemist and a professor in the Department of Chemistry at the University of Manchester. Winpenny's research is within the fields of inorganic chemistry and magnetochemistry, specifically the areas of single-molecule magnetism, inorganic synthesis, supramolecular chemistry and polymetallic caged complexes.
References
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- ↑ Ishikawa, Naoto; Sugita, Miki; Wernsdorfer, Wolfgang (March 2005). "Nuclear Spin Driven Quantum Tunneling of Magnetization in a New Lanthanide Single-Molecule Magnet: Bis(Phthalocyaninato)holmium Anion". Journal of the American Chemical Society . 127 (11): 3650–3651. arXiv: cond-mat/0506582 . Bibcode:2005cond.mat..6582I. doi:10.1021/ja0428661. PMID 15771471. S2CID 40136392.
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- ↑ Spinelli, A.; Bryant, B.; Delgado, F.; Fernández-Rossier, J.; Otte, A. F. (2014-08-01). "Imaging of spin waves in atomically designed nanomagnets". Nature Materials. 13 (8): 782–785. arXiv: 1403.5890 . Bibcode:2014NatMa..13..782S. doi:10.1038/nmat4018. ISSN 1476-1122. PMID 24997736.
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