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Full-Text Articles in Physics
Indentation Of Ultrathin Elastic Films And The Emergence Of Asymptotic Isometry, Dominic Vella, Jianghui Huang, Narayanan Menon, Thomas P. Russell, Benny Davidovitch
Indentation Of Ultrathin Elastic Films And The Emergence Of Asymptotic Isometry, Dominic Vella, Jianghui Huang, Narayanan Menon, Thomas P. Russell, Benny Davidovitch
Benny Davidovitch
We study the indentation of a thin elastic film floating at the surface of a liquid. We focus on the onset of radial wrinkles at a threshold indentation depth and the evolution of the wrinkle pattern as indentation progresses far beyond this threshold. Comparison between experiments on thin polymer films and theoretical calculations shows that the system very quickly reaches the far from threshold regime, in which wrinkles lead to the relaxation of azimuthal compression. Furthermore, when the indentation depth is sufficiently large that the wrinkles cover most of the film, we recognize a novel mechanical response in which the …
Fluctuation-Induced First Order Phase Transitions In Type-1.5 Superconductors In Zero External Field, Hannes Meier, Egor Babaev, Mats Wallin
Fluctuation-Induced First Order Phase Transitions In Type-1.5 Superconductors In Zero External Field, Hannes Meier, Egor Babaev, Mats Wallin
Egor Babaev
No abstract provided.
Vortex Chains Due To Nonpairwise Interactions And Field-Induced Phase Transitions Between States With Different Broken Symmetry In Superconductors With Competing Order Parameters, Julien Garaud, Egor Babaev
Vortex Chains Due To Nonpairwise Interactions And Field-Induced Phase Transitions Between States With Different Broken Symmetry In Superconductors With Competing Order Parameters, Julien Garaud, Egor Babaev
Egor Babaev
We study superconductors with two order components and phase separation driven by intercomponent density-density interaction, focusing on the phase where only one condensate has nonzero ground-state density and a competing order parameter exists only in vortex cores. We demonstrate there that multibody intervortex interactions can be strongly nonpairwise, leading to some unusual vortex patterns in an external field, such as vortex pairs and vortex chains. We demonstrate that in an external magnetic field such a system undergoes a field-driven phase transition from (broken) U(1) to (broken) U(1)×U(1) symmetries when a subdominant order parameter in the vortex cores acquires global coherence. …
Spontaneous Breakdown Of Time-Reversal Symmetry Induced By Thermal Fluctuations, Johan Carlström, Egor Babaev
Spontaneous Breakdown Of Time-Reversal Symmetry Induced By Thermal Fluctuations, Johan Carlström, Egor Babaev
Egor Babaev
In systems with broken U(1) symmetry, such as superfluids, superconductors or magnets, the symmetry restoration is driven by proliferation of topological defects in the form of vortex loops. Here we discuss that in certain systems the proliferation of topological defects can, by contrast, lead to the breakdown of an additional symmetry. As a particular example we demonstrate that this effect should take place in s + is superconductors, which are widely discussed in connection with the Iron-based materials. In these systems a vortex excitation can create a “bubble" of fluctuating Z2 order parameter. Thermal excitation of vortices then leads to …