Literature DB >> 25615049

Odd q-state clock spin-glass models in three dimensions, asymmetric phase diagrams, and multiple algebraically ordered phases.

Efe Ilker1, A Nihat Berker2.   

Abstract

Distinctive orderings and phase diagram structures are found, from renormalization-group theory, for odd q-state clock spin-glass models in d=3 dimensions. These models exhibit asymmetric phase diagrams, as is also the case for quantum Heisenberg spin-glass models. No finite-temperature spin-glass phase occurs. For all odd q≥5, algebraically ordered antiferromagnetic phases occur. One such phase is dominant and occurs for all q≥5. Other such phases occupy small low-temperature portions of the phase diagrams and occur for 5≤q≤15. All algebraically ordered phases have the same structure, determined by an attractive finite-temperature sink fixed point where a dominant and a subdominant pair states have the only nonzero Boltzmann weights. The phase transition critical exponents quickly saturate to the high q value.

Year:  2014        PMID: 25615049     DOI: 10.1103/PhysRevE.90.062112

Source DB:  PubMed          Journal:  Phys Rev E Stat Nonlin Soft Matter Phys        ISSN: 1539-3755


  1 in total

1.  Entropy and Mutability for the q-State Clock Model in Small Systems.

Authors:  Oscar A Negrete; Patricio Vargas; Francisco J Peña; Gonzalo Saravia; Eugenio E Vogel
Journal:  Entropy (Basel)       Date:  2018-12-06       Impact factor: 2.524

  1 in total

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