Zobrazeno 1 - 10
of 306
pro vyhledávání: '"Efetov, K."'
Publikováno v:
Phys. Rev. B 99, 144506 (2019)
We study theoretically spontaneous currents and magnetic field induced in a superconductor-ferromagnet (S-F) bilayer due to direct and inverse proximity effects. The induced currents {are Meissner currents that appear even in the absence of an extern
Externí odkaz:
http://arxiv.org/abs/1901.04446
In this communication we refute a criticism concerning results of our work [3] that was presented in references [1] and [2].
Externí odkaz:
http://arxiv.org/abs/1810.05014
Autor:
Efetov, D. K., Wang, L., Handschin, C., Efetov, K. B., Shuang, J., Cava, R., Taniguchi, T., Watanabe, K., Hone, J., Dean, C. R., Kim, P.
Publikováno v:
Nature Physics 12, 328-332 (2016)
Electrons incident from a normal metal onto a superconductor are reflected back as holes - a process called Andreev reflection. In a normal metal where the Fermi energy is much larger than a typical superconducting gap, the reflected hole retraces th
Externí odkaz:
http://arxiv.org/abs/1505.04812
Autor:
Efetov, K. B.
Publikováno v:
Physical Review B 91, 045110 (2015)
Kinetic properties of a two dimensional model of fermions interacting with antiferromagnetic spin excitations near the quantum critical point (QCP) are considered. The temperature or doping are assumed to be sufficiently high, such that the pseudogap
Externí odkaz:
http://arxiv.org/abs/1408.3865
Publikováno v:
Phys. Rev. B 90, 054511 (2014)
We theoretically investigate the vortex state of the cuprate high-temperature superconductors in the presence of magnetic fields. Assuming the recently derived nonlinear $\sigma$-model for fluctuations in the pseudogap phase, we find that the vortex
Externí odkaz:
http://arxiv.org/abs/1407.5794
Autor:
Fistul, M. V., Efetov, K. B.
We present a theoretical study of quantum resonances in the ballistic transport of graphene based $N$-$P$-$N$ junction subject to an externally applied electromagnetic field (EF). By making use of the Floquet analysis and the quasi-classical approach
Externí odkaz:
http://arxiv.org/abs/1403.2206
Publikováno v:
Phys. Rev. B 89, 195115 (2014)
We study the timely issue of charge order checkerboard patterns observed in a variety of cuprate superconductors. We suggest a minimal model in which strong quantum fluctuations in the vicinity of a single antiferromagnetic quantum critical point gen
Externí odkaz:
http://arxiv.org/abs/1312.2010
Publikováno v:
Phys. Rev. B 88, 020506(R) (2013)
We theoretically investigate the T-B phase diagram of cuprates building on the SU(2) pseudogap order recently obtained from the spin-fermion model. At low temperatures, our analysis reveals an almost temperature-independent critical magnetic field B_
Externí odkaz:
http://arxiv.org/abs/1306.6871
Publikováno v:
Nat. Phys. 9, 442 (2013)
Upon application of an external tuning parameter, a magnetic state can be driven to a normal metal state at zero temperature. This phenomenon is known as quantum criticality and leads to fascinating responses in thermodynamics and transport of the co
Externí odkaz:
http://arxiv.org/abs/1210.3276
Publikováno v:
Phys. Rev. B 86, 241102(R) (2012)
We study the ac conduction in a system of fermions or bosons strongly localised in a disordered array of sites with short-range interactions at frequencies larger than the intersite tunnelling but smaller than the characteristic fluctuation of the on
Externí odkaz:
http://arxiv.org/abs/1210.1997