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The Study of Phase Transition of The Torsion X-Y Model

The phase transitions of a newly proposed torsion X-Y model,
are studied with molecular dynamics. ForJ3 >0, the influence from J1 term is similar to the term.We found the Torsion X-Y Model and X-Y Model or Coupled X-Y Model all have the Kosterlitz-Thouless transition. (KT)
We also confirm that the KT transition is a second order transition , The distribution of angle £c start from dis-ordered to well-ordered. KT starts first before the randomly distributed £c shows preference and ends when the preference is merged.
For the J3 <0 case, the KT is also found in J3=-0.0167 and J3=-0.0334 The temperature for negative J3 is lower then that for positive J3 due to the resistant force to £c ordering from the coupled interaction.

Identiferoai:union.ndltd.org:NSYSU/oai:NSYSU:etd-0127103-144149
Date27 January 2003
CreatorsHuang, Wen-Kuei
ContributorsChie-Tong Kuo, I-Min Jiang, Wang-Chuang Kuo
PublisherNSYSU
Source SetsNSYSU Electronic Thesis and Dissertation Archive
LanguageCholon
Detected LanguageEnglish
Typetext
Formatapplication/pdf
Sourcehttp://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0127103-144149
Rightsunrestricted, Copyright information available at source archive

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