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Novel p-wave superfluids of fermionic polar molecules
Scientific Reports. 2016. Vol. 6. P. 27448 (1)-27448 (10).
Recently suggested subwavelength lattices offer remarkable prospects for the observation of novel
superfluids of fermionic polar molecules. It becomes realistic to obtain a topological p-wave superfluid
of microwave-dressed polar molecules in 2D lattices at temperatures of the order of tens of nanokelvins,
which is promising for topologically protected quantum information processing. Another foreseen novel
phase is an interlayer p-wave superfluid of polar molecules in a bilayer geometry.
Fedorov A. K., Yudson V., Shlyapnikov G. V., Physical Review A: Atomic, Molecular, and Optical physics 2017 Vol. 95 No. 4 P. 043615(1)-043615(11)
We discuss the emergence of p-wave superfluidity of identical atomic fermions in a two-dimensional optical lattice. The optical lattice potential manifests itself in an interplay between an increase in the density of states on the Fermi surface and the modification of the fermion-fermion interaction (scattering) amplitude. The density of states is enhanced due to an increase ...
Added: June 8, 2017
Pinchenkova V., Matveenko S., Yudson Vladimir I. et al., Comptes Rendus Physique 2023 Vol. 24 No. S3 P. 1-11
We investigate the effect of weak disorder on the superfluid properties of two-component quasi-two-dimensional dipolar Fermi gases. The dipole-dipole interaction amplitude is momentum dependent, which violates the Anderson theorem claiming that the weak disorder has practically no influence on the superfluid transition temperature in the weakly interacting regime. We find that for dipolar fermions the ...
Added: September 8, 2023
Dmitriev V. V., Kutuzov M. S., Soldatov А. А. et al., JETP Letters 2020 Vol. 112 No. 12 P. 780-785
We present experiments on nematic aerogel oscillating in superfluid 3He. This aerogel consists of nearly parallel mullite strands and is attached to a vibrating wire moving along the direction of the strands. Previous nuclear magnetic resonance experiments in 3He confined in similar aerogel sample have shown that the superfluid transition of 3He in aerogel occurs into the polar ...
Added: October 29, 2022
Суровцев Е. В., Журнал экспериментальной и теоретической физики 2021 Т. 160 № 4 С. 553-564
Potential flow of 3He through a spherical nematic aerogel is considered. A characteristic feature of the system under consideration is that the superfluid phases inside and outside the aerogel may be different. In particular, the cases are considered when the polar phase of superfluid 3He is implemented inside the aerogel, while, outside the aerogel, there ...
Added: October 29, 2022
Azat F. Aminov, Alexey A. Sokolik, Yurii E. Lozovik, QUANTUM 2022 Vol. 6 Article 787
The Andreev-Bashkin effect, or superfluid drag, is predicted in a system of Bose-condensed excitonic polaritons in optical microcavity coupled by electron-exciton interaction with a superconducting layer. Two possible setups with spatially indirect dipole excitons or direct excitons are considered. The drag density characterizing a magnitude of this effect is found by many-body calculations with taking ...
Added: August 25, 2022
Kagan M.Yu., Springer, 2013
Overview This book concisely presents the latest trends in the physics of superconductivity and superfluidity and magnetismin novel systems, as well as the problem of BCS-BEC crossover in ultracold quantum gases and high-Tc superconductors. It further illuminates the intensive exchange of ideas between these closely related fields of condensed matter physics over the last 30 ...
Added: February 17, 2014
Маслов Виктор Павлович, Доклады Российской академии наук. Математика, информатика, процессы управления (ранее - Доклады Академии Наук. Математика) 2015 Т. 462 № 1 С. 30-34
A new distribution corresponding to thermodynamics in supercritical and subcritical regions and in the region of negative pressure is considered. ...
Added: September 8, 2015
Voronova N., Yurii E. Lozovik, , in : Proceedings of 34th International Conference on the Physics of Semiconductors (ICPS) "Advances in Physics of Semiconductors". : Weinheim : Wiley-VCH, 2019. P. 1800431-1-1800431-8.
The anisotropic superfluidity in a weakly interacting two‐dimensional Bose gas of photons in a dye‐filled optical microcavity is investigated, taking into account the dependence of the photon effective mass on the in‐plane coordinate. With the use of the generalized Gross–Pitaevskii equation and the Bogoliubov approach, it is shown that the modulation of the microcavity width ...
Added: November 1, 2019
Ryabchun S., M. : -, 2017
These notes have appeared as a result of a one-term course in superfluidity and superconductivity given by the author to fourth-year undergraduate students and first-year graduate students of the Department of Physics, Moscow State University of Education. The goal was not to give a detailed picture of these two macroscopic quantum phenomena with an extensive ...
Added: March 15, 2018
Berman O. L., Kezerashvili R., Yurii E. Lozovik, Journal of the Optical Society of America B: Optical Physics 2017 Vol. 34 P. 1649-1658
The condensate density profile of trapped two-dimensional gas of photons in an optical microcavity, filled by a dye solution, is analyzed taking into account a coordinate-dependent effective mass of cavity photons and photon–photon coupling parameter. The profiles for the densities of the superfluid and normal phases of trapped photons in the different regions of the ...
Added: November 28, 2017
Yu. E. Lozovik, I. L. K., Pavel A. V., Physical Review B: Condensed Matter and Materials Physics 2017 Vol. 95 No. 24-5430 P. 245430-1-245430-19
We study anisotropies of the helicity modulus, excitation spectrum, sound velocity, and angle-resolved luminescence spectrum in a two-dimensional system of interacting excitons in a periodic potential. Analytical expressions for anisotropic corrections to the quantities characterizing superfluidity are obtained. We consider particularly the case of dipolar excitons in quantum wells. For GaAs/AlGaAs heterostructures as well as ...
Added: October 22, 2017
Гусаков М. Е., Кантор Е. М., Ofengeim D., Monthly Notices of the Royal Astronomical Society 2020 Vol. 499 No. 3 P. 4561-4569
The self-consistent approach to the magnetic field evolution in neutron star (NS) cores, developed recently, is generalized to the case of superfluid and superconducting NSs. Applying this approach to the cold matter of NS cores composed of neutrons, protons, electrons, and muons, we find that, similarly to the case of normal matter, an arbitrary configuration ...
Added: November 11, 2020
Ю.Е. Лозовик, Успехи физических наук 2018 Т. 188 № 11 С. 1203-1208
Рассматриваются новые эффекты в системах квантовых диполей: анизотропная сверхтекучесть во внешних полях, эффекты сильных корреляций и кристаллизация, фаза суперсолида. Анализируются эффекты ротонной неустойчивости, типичные для сильно коррелированных бозе-систем, но проявляющиеся в слабо взаимодействующей системе наклонных диполей. Интересными физическими реализациями рассматриваемых систем являются дипольные экситоны в связанных квантовых ямах либо в одиночной квантовой яме в сильном ...
Added: October 22, 2018
Berman O., Kezerashvili R., Yurii E. Lozovik et al., Physical Review B: Condensed Matter and Materials Physics 2019 Vol. 100 No. 13 P. 134514-1-134514-8
We propose controlling an electron-hole superfluid in semiconductor coupled quantum wells and double layers of a two-dimensional (2D) material by an external periodic field. This can be created either by the gates periodically located and attached to the quantum wells or double layers of the 2D material or by the moiré pattern of two twisted ...
Added: October 22, 2019
Matveenko S. I., Yudson V.I., Altshuler B. L. et al., Physical Review A: Atomic, Molecular, and Optical physics 2020 Vol. 102 No. 5 P. 053319 (1)-053319 (8)
We consider a weakly interacting two-component Fermi gas of dipolar particles (magnetic atoms or polar molecules) in two-dimensional geometry. The dipole-dipole interaction (together with the short-range interaction at Feshbach resonances) for dipoles perpendicular to the plane of translational motion may provide a superfluid transition. The dipole-dipole scattering amplitude is momentum dependent, which violates the Anderson ...
Added: January 15, 2021