Zobrazeno 1 - 10
of 223
pro vyhledávání: '"Tokatly I"'
We formulate and analyze in detail the ground state quantum electrodynamical density functional theory (QEDFT) for a generalized Dicke model describing a collection of $N$ tight-binding dimers minimally coupled to a cavity photon mode. This model is
Externí odkaz:
http://arxiv.org/abs/2310.00694
Autor:
Xiang, B. K., Lin, Y. S., He, Q. S., Zhu, J. J., Chen, B. R., Wang, Y. F., Liang, K. Y., Li, Z. J., Yao, H. X., Wu, C. X., Zhou, T. Y., Fang, M. H., Lu, Y., Tokatly, I. V., Bergeret, F. S., Wang, Y. H.
Conventional superconductors naturally disfavor ferromagnetism because the supercurrent-carrying electrons are paired into anti-parallel spin singlets. In superconductors with strong Rashba spin-orbit coupling, impurity magnetic moments induce superc
Externí odkaz:
http://arxiv.org/abs/2307.10722
We investigate the behavior of magnetic impurities placed on the surface of superconductor thin films with spin-orbit coupling. Our study reveals long-range interactions between the impurities, which decay according to a power law, mediated by the su
Externí odkaz:
http://arxiv.org/abs/2307.10723
Motivated by recent discoveries of superconductivity in lightly-doped multilayer graphene systems, we present a low-energy model to study superconductivity in 2D materials whose Fermi surface consists of two valleys at $\pm \vec{K}$-points. We assume
Externí odkaz:
http://arxiv.org/abs/2304.14849
We show that the analytic structure of the dynamical xc kernels of semiconductors and insulators can be sensed in terms of its poles which mark physically relevant frequencies of the system where the counter-phase motion of discrete collective excita
Externí odkaz:
http://arxiv.org/abs/2209.10257
Publikováno v:
Phys. Rev. A 106, 043708 (2022)
We developed a theory of electron scattering by a short-range repulsive potential in a cavity. In the regime of ultrastrong electron coupling to the cavity electromagnetic field, the vacuum fluctuations of the field result in the dynamical stabilizat
Externí odkaz:
http://arxiv.org/abs/2207.02077
Publikováno v:
Phys. Rev. B 105, 224517 (2022)
We derive the nonlinear $\sigma$-model to describe diffusive transport in normal metals and superconductors with intrinsic spin-orbit coupling (SOC). The SOC is described via an SU(2) gauge field, and we expand the model to the fourth order in gradie
Externí odkaz:
http://arxiv.org/abs/2205.14075
We generalize the optimized effective potential (OEP) formalism in the quantum electrodynamical density functional theory (QEDFT) to the case of continuous distribution of photon modes, and study its applicability to dissipative dynamics of electron
Externí odkaz:
http://arxiv.org/abs/2111.04523
Publikováno v:
Phys. Rev. B 104, 064515 (2021)
We suggest a generalization of nonlinear $\sigma$-model for diffusive superconducting systems to account for magnetoelectric effects due to spin-orbit scattering. In the leading orders of spin-orbit strength and gradient expansion it includes two add
Externí odkaz:
http://arxiv.org/abs/2106.15859
Publikováno v:
Phys. Rev. B 103, 064505 (2021)
We study a periodic arrangement of magnetic regions in a one-dimensional superconducting wire. Due to the local exchange field, each region supports Andreev bound states that hybridize forming Bloch bands in the subgap spectrum of what we call the An
Externí odkaz:
http://arxiv.org/abs/2007.05350