Zobrazeno 1 - 10
of 933
pro vyhledávání: '"Hucht, A"'
Using exact enumeration, the Casimir amplitude and the Casimir force are calculated for the square lattice Ising model with quenched surface disorder on one surface in cylinder geometry at criticality. The system shape is characterized by the aspect
Externí odkaz:
http://arxiv.org/abs/2409.01434
Publikováno v:
SciPost Phys. 17, 122 (2024)
We consider an Ising model with quenched surface disorder, the disorder average of the free energy is the main object of interest. Explicit expressions for the free energy distribution are difficult to obtain if the quenched surface spins take values
Externí odkaz:
http://arxiv.org/abs/2312.13231
Autor:
Schaller, Gernot, Queisser, Friedemann, Katoorani, Seyedeh Parya, Brand, Christian, Kohlfürst, Christian, Freeman, Mark R., Hucht, Alfred, Kratzer, Peter, Sothmann, Björn, Hoegen, Michael Horn-von, Schützhold, Ralf
As a simplified description of the non-equilibrium dynamics of buckled dimers on the Si(001) surface, we consider the anisotropic 2D Ising model and study the freezing of spatial correlations during a cooling quench across the critical point. We obse
Externí odkaz:
http://arxiv.org/abs/2310.18216
Autor:
Brand, Christian, Hucht, Alfred, Mehdipour, Hamid, Jnawali, Giriraj, Fortmann, Jonas D., Tajik, Mohammad, Hild, Rüdiger, Sothmann, Björn, Kratzer, Peter, Schützhold, Ralf, Hoegen, Michael Horn-von
The critical behavior of the order-disorder phase transition in the buckled dimer structure of the Si(001) surface is investigated both theoretically by means of first-principles calculations and experimentally by spot profile analysis low-energy ele
Externí odkaz:
http://arxiv.org/abs/2310.10488
Autor:
Brand, Christian, Hucht, Alfred, Jnawali, Giriraj, Fortmann, Jonas D., Sothmann, Björn, Mehdipour, Hamid, Kratzer, Peter, Schützhold, Ralf, Hoegen, Michael Horn-von
The coupling energies between the buckled dimers of the Si(001) surface were determined through analysis of the anisotropic critical behavior of its order-disorder phase transition. Spot profiles in high-resolution low-energy electron diffraction as
Externí odkaz:
http://arxiv.org/abs/2302.01715
Publikováno v:
Phys. Rev. B 106, 165427 (2022)
On the basis of the method of iterative summation of path integrals (ISPI), we develop a numerically exact transfer-matrix method to describe the nonequilibrium properties of interacting quantum-dot systems. For this, we map the ISPI scheme to a tran
Externí odkaz:
http://arxiv.org/abs/2208.07619
Autor:
Pollmann, E., Maas, A., Marnold, D., Hucht, A., Neubieser, R., Stief, M., Madauß, L., Schleberger, M.
Publikováno v:
2D Materials 9, 035001 (2022)
The preparation of two-dimensional transition metal dichalcogenides on an industrially relevant scale will rely heavily on bottom-up methods such as chemical vapour deposition. In order to obtain sufficiently large quantities of high-quality material
Externí odkaz:
http://arxiv.org/abs/2201.08085
Publikováno v:
SciPost Physics, Vol 17, Iss 4, p 122 (2024)
We consider an Ising model with quenched surface disorder, the disorder average of the free energy is the main object of interest. Explicit expressions for the free energy distribution are difficult to obtain if the quenched surface spins take values
Externí odkaz:
https://doaj.org/article/b7881b632a07487083a4600c797c2f68
Autor:
Besson, Claire, Stegmann, Philipp, Schnee, Michael, Zanolli, Zeila, Achilli, Simona, Wittemeier, Nils, Vierck, Asmus, Frielinghaus, Robert, Kögerler, Paul, Maultzsch, Janina, Ordejón, Pablo, Schneider, Claus M., Hucht, Alfred, König, Jürgen, Meyer, Carola
Publikováno v:
Physical Review B, vol 107, 2023, 245414
Spin-electronic devices are poised to become part of mainstream microelectronic technology .Downsizing them, however, faces the intrinsic difficulty that as ferromagnets become smaller, it becomes more difficult to stabilize their magnetic moment. An
Externí odkaz:
http://arxiv.org/abs/2107.07723
Autor:
Hucht, Alfred
Publikováno v:
J. Phys. A: Math. Theor. 54, 375201 (2021)
Based on the results obtained in [Hucht, J. Phys. A: Math. Theor. 50, 065201 (2017)], we show that the partition function of the anisotropic square lattice Ising model on the $L \times M$ rectangle, with open boundary conditions in both directions, i
Externí odkaz:
http://arxiv.org/abs/2103.10776