Rolf Siems

Affiliations: 
1970-1998 Physics Universität des Saarlandes, Saarbrücken, Saarland, Germany 
Website:
https://idw-online.de/de/news374852
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"Rolf Siems"
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Publications

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Neubert B, Pleimling M, Siems R. (1998) Transitions between phases with equal wavenumbers in a double Ising spin model. Application to betaine calcium chloride dihydrate Journal of Physics Condensed Matter. 10: 6883-6896
Pleimling M, Neubert B, Siems R. (1998) Low-temperature phase diagram and critical behaviour of the four-state chiral clock model Journal of Physics a: Mathematical and General. 31: 4871-4883
Neubert B, Pleimling M, Siems R. (1998) Models for the description of uniaxially modulated materials Ferroelectrics. 141-190
Schmidt H, Siems R. (1998) Phase transitions in models with two coupled pseudospin-lattices Journal of the Korean Physical Society. 32: S110-S113
Neubert B, Pleimling M, Siems R. (1998) Derivation of symmetry-based pseudo spin models for modulated materials Journal of the Korean Physical Society. 32: S36-S39
Neubert B, Pleimling M, Siems R. (1998) Models for the description of uniaxially modulated materials Ferroelectrics. 208: 141-190
Pleimling M, Neubert B, Siems R. (1997) Interrelations between various frustrated Ising- and q-state-models Zeitschrift FüR Physik B Condensed Matter. 104: 125-130
Pleimling M, Siems R. (1996) Low temperature expansion of a double ising spin model Ferroelectrics. 185: 103-106
Neubert B, Siems R. (1996) From crystal structure to phase diagrams: Use of annni- and related models Ferroelectrics. 185: 95-98
Jenal K, Siems R. (1996) Accumulation points of phase branchings in annni models: Numerical results and analytical low temperature approximations Ferroelectrics. 185: 99-102
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