Abstract
It is shown that at low temperatures, quantum oscillations of nanoscale structural inhomogeneities (the vertical Bloch line and the Bloch point) occur in the domain walls of cylindrical magnetic domains formed in a uniaxial magnetic film with strong magnetic anisotropy. The conditions for the excitation of these oscillations are determined.
Highlights
The investigation of localized structural inhomogeneities of the domain walls (DWs) in ferromagnetic materials is one of the topical problems of the physics of nanoscale phenomena
Film strips and cylindrical magnetic domains are formed in external magnetic field, and the internal structure of the DWs is characterized by the presence of vertical Bloch lines (BLs) and Bloch points (BPs) [1]
It is expected that the quantum dynamics of structural inhomogeneities in DW should reveal itself in the corresponding gyrotropic bending of DWs caused by their motion
Summary
The investigation of localized structural inhomogeneities of the domain walls (DWs) in ferromagnetic materials is one of the topical problems of the physics of nanoscale phenomena. In this connection, the magnetic films with a strong uniaxial anisotropy are distinguished. Many aspects related to the detection, monitoring, and control of these inhomogeneities have been well studied (see for example, the review [2] and references therein) The results of these researches determine the prospects of using the vertical BL and BP as hardware components in the microelectronics [3]. It should be noted that the quantum oscillations of vertical BL and BP have not been considered so far This problem is topical, and its solution is important for the modern nanophysics and various practical applications. This work is related to the determination of the conditions of excitation of quantum oscillations of vertical BL and BP in the domain walls of magnetic bubble
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