Skyrmion mass and a new kind of cyclotron resonance for the 2D electron gas
Abstract
The skyrmionic mass was calculated in the main order of the gradient expansion in derivatives of the rotation matrix. The mass is proportinal to the topological invariant which is the absolut value of the degree of the mapping. The coefficient is defined by the exchange interaction. The charged skyrmions in magnetic field give rise to a special branch of cyclotron resonance with the frequency defined by the exchange interaction and have the corresponding term in their minimal energy. The possibility of an extra bound electron and neutral skyrmions is discussed.
 Publication:

Soviet Journal of Experimental and Theoretical Physics Letters
 Pub Date:
 September 1997
 DOI:
 10.1134/1.567538
 arXiv:
 arXiv:condmat/9709040
 Bibcode:
 1997JETPL..66..459I
 Keywords:

 Condensed Matter  Mesoscale and Nanoscale Physics;
 Condensed Matter  Strongly Correlated Electrons
 EPrint:
 4 pages, Latex (submitted to JETP lett.)