821 citations
- Max Planck SocietyDE5 papers
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16 papers · 1 filter
Fe-implanted ZnO: Magnetic precipitates versus dilution
Shengqiang Zhou, K. Potzger, G. Talut +9
Nowadays ferromagnetism is often found in potential diluted magnetic semiconductor systems. However, many authors argue that the observed ferromagnetism stems from ferromagnetic pr…
Ferromagnetic transition metal implanted ZnO: a diluted magnetic semiconductor?
Shengqiang Zhou, K. Potzger, Qingyu Xu +7
Recently theoretical works predict that some semiconductors (e.g. ZnO) doped with magnetic ions are diluted magnetic semiconductors (DMS). In DMS magnetic ions substitute cation si…
Conformational Mechanics of Polymer Adsorption Transitions at Attractive Substrates
Monika Möddel, Michael Bachmann, Wolfhard Janke
Conformational phases of a semiflexible off-lattice homopolymer model near an attractive substrate are investigated by means of multicanonical computer simulations. In our polymer-…
Thermodynamics of tubelike flexible polymers
Thomas Vogel, Thomas Neuhaus, Michael Bachmann +1
In this work we present the general phase behavior of short tubelike flexible polymers. The geometric thickness constraint is implemented through the concept of the global radius o…
Submonoids and rational subsets of groups with infinitely many ends
Markus Lohrey, Benjamin Steinberg
In this paper we show that the membership problems for finitely generated submonoids and for rational subsets are recursively equivalent for groups with two or more ends.
Anisotropy of the interface tension of the three-dimensional Ising model
Elmar Bittner, Andreas Nußbaumer, Wolfhard Janke
We determine the interface tension for the 100, 110 and 111 interface of the simple cubic Ising model with nearest-neighbour interaction using novel simulation methods. To overcome…