A research team has succeeded in creating an excitation in the magnetic order in a thin layer of hematite that can be moved through the layer in order to transmit information. Image: C. Hohmann / MCQST
A research team has succeeded in creating an excitation in the magnetic order in a thin layer of hematite that can be moved through the layer in order to transmit information. Image: C. Hohmann / MCQST Pseudospin in antiferromagnets: new perspectives for information technologies - Elementary particles carry an intrinsic angular momentum known as their spin. For an electron, the spin can take only two particular values relative to a quantization axis, letting us denote them as spin-up and spin-down electrons. This intrinsic two-valuedness of the electron spin is at the core of many fascinating effects in physics. In today's information technology, the spin of an electron and the associated magnetic momentum are exploited in applications of information storage and readout of magnetic media, like hard disks and magnetic tapes. Both, the storage media and the readout sensors utilize ferromagnetically ordered materials, where all magnetic moments align parallel. However, the moments may orient in a more complex way.
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