Verkholyak T. Influence of disorder and different types of interactions on the thermodynamic and dynamic properties of model spin systems

Українська версія

Thesis for the degree of Candidate of Sciences (CSc)

State registration number

0499U002070

Thesis Registration Form

0499U002070.pdf

Applicant for

Specialization

  • 01.04.02 - Теоретична фізика

23-09-1999

Specialized Academic Board

Д 35.156.01

Institute for Condensed Matter Physics of the National Academy of Sciences of Ukraine

Essay

Model spin systems. Theoretical description of spin models with random inhomogeneity and different interactions. Methods are Green functions, numerical approach, diagramm technique, effective field method. For random spin-1/2 XY model, exact analytical and numerical results are obtained. Method of expansion over inverse interaction is applied for disordered Ising model. Effective field method is extended for the Ising model with arbitrary interaction. Physics of magnets and ferroelectrics is the field of applications.

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