|Criticality of structurally disordered magnets within field-theoretical renormalization group|
|Thursday 14 September 2017 , 10h25|
|Salle de séminaire du groupe de Physique Statistique|
Usually natural materials do not possess ideal regular structure. Therefore it is important to study influence of structural disorder on the thermodynamical properties of physical systems. We are interested in a question: if the adding weak quenched structural disorder will change the critical properties of three-dimensional magnets. For this purpose three- dimensional spin models with different type of randomness are considered. Their asymptopic and effective (non-asymptotic) critical characteristics are calculated mainly by field-theoretical renormalization group approach. Obtained results demonstrate rich critical properties in the the non- asymptotic regime.