scholarly journals Magnetic anomalies inNd6Co1.67Si3: A first-order transition in the low-temperature isothermal magnetization behavior

2008 ◽  
Vol 78 (5) ◽  
Author(s):  
Niharika Mohapatra ◽  
S. Narayana Jammalamadaka ◽  
Sitikantha D. Das ◽  
E. V. Sampathkumaran
2012 ◽  
Vol 24 (02) ◽  
pp. 1250004 ◽  
Author(s):  
AERNOUT C. D. VAN ENTER ◽  
GIULIO IACOBELLI ◽  
SIAMAK TAATI

We study a variant of the ferromagnetic Potts model, recently introduced by Tamura, Tanaka and Kawashima, consisting of a ferromagnetic interaction among q "visible" colors along with the presence of r non-interacting "invisible" colors. We introduce a random-cluster representation for the model, for which we prove the existence of a first-order transition for any q > 0, as long as r is large enough. When q > 1, the low-temperature regime displays a q-fold symmetry breaking. The proof involves a Pirogov–Sinai analysis applied to this random-cluster representation of the model.


2014 ◽  
Vol 113 (22) ◽  
Author(s):  
Lukasz Kusmierz ◽  
Satya N. Majumdar ◽  
Sanjib Sabhapandit ◽  
Grégory Schehr

1990 ◽  
Vol 74 (11) ◽  
pp. 1175-1179 ◽  
Author(s):  
M.D. Coutinho-Filho ◽  
M.L. Lyra ◽  
A.M. Nemirovsky

2015 ◽  
Vol 9 (2) ◽  
pp. 136-140 ◽  
Author(s):  
Anja Waske ◽  
Lars Giebeler ◽  
Bruno Weise ◽  
Alexander Funk ◽  
Manuel Hinterstein ◽  
...  

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