Critical Exponent Induced by Impurity Effect
Abstract
A new critical exponent associated with impurity effect is introduced in the case of wavenumber dependent susceptibility G(q) at T = T_{c}. The G(q) is expanded up to a^{2} (a is a parameter representing the strength of impurity effect) and is shown to take a form G(q) = Aq^{2+ η}+Bq^{2+ η i}. An exponent η_{i} is studied in the limit n to ∞ and also up to ∊^{2} in the scheme of ∊ expansion for the quenched system. It turns out that the results obtained by two methods are consistent.
 Publication:

Progress of Theoretical Physics
 Pub Date:
 November 1979
 DOI:
 10.1143/PTP.62.1236
 Bibcode:
 1979PThPh..62.1236A