منابع مشابه
Melting of discrete vortices via quantum fluctuations.
We consider nonlinear boson states with a nontrivial phase structure in the three-site Bose-Hubbard ring, quantum discrete vortices (or q vortices), and study their "melting" under the action of quantum fluctuations. We calculate the spatial correlations in the ground states to show the superfluid-insulator crossover and analyze the fidelity between the exact and variational ground states to ex...
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The high-pressure melting curve of iron is of major importance to the Earth’s sciences, as it provides a close estimate of the temperature of the Earth’s core. Despite being studied experimentally for more than a decade and, more recently, using theoretical quantum mechanics techniques, there are still large discrepancies between different groups. In this article, we will describe our theoretic...
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Tzu-ging Lin, George Simion, John D. Watson, 3 Michael J. Manfra, 3, 4, 5 Gabor A. Csathy, Yuli Lyanda-Geller, 3 and Leonid P. Rokhinson 3, 4 1Department of Physics and Astronomy, Purdue University, West Lafayette, Indiana 47907 USA 2Department of Physics, Purdue University, West Lafayette, Indiana 47907 USA 3Birck Nanotechnology Center, Purdue University, West Lafayette, Indiana 47907 USA 4Dep...
متن کاملSkyrmion lattice melting in the quantum Hall system
The melting and magnetic disordering of the Skyrmion lattice in the quantum Hall system at filling factor n'1 are studied. A Berezinskii-Kosterlitz-Thouless renormalization-group theory is employed to describe the coupled magnetic and translational degrees of freedom. The nontrivial magnetic properties of the Skyrmion system stem from the in-plane components of the noncollinear magnetization in...
متن کاملQuantum melting on a lattice and a delocalization transition
We consider 2d gas of spinless fermions with the Coulomb interaction on a lattice at T = 0 and at different values of the hopping amplitude J . At small J electrons form a periodic structure. At filling factor ν = 1/6 this structure melts at J as low as 0.02–0.03 in units of the nearest-neighbor Coulomb energy. We argue that this transition is connected to the dielectric-metal or dielectricsupe...
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ژورنال
عنوان ژورنال: Materials Today
سال: 2010
ISSN: 1369-7021
DOI: 10.1016/s1369-7021(10)70098-5