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22 papers · 1 filter
High-field magnetic resonance of spinons and magnons in a triangular lattice S=1/2 antiferromagnet Cs2CuCl4
A. I. Smirnov, T. A. Soldatov, K. Yu. Povarov +1
The electron spin resonance doublet indicating the width of the two spinon continuum in a spin-1/2 triangular-lattice Heisenberg antiferromagnet Cs2CuCl4 was studied in high magnet…
Strict parabolicity of the multifractal spectrum at the Anderson transition
I. M. Suslov
Using the well-known "algebra of multifractality", we derive the functional equation for anomalous dimensions Δ_q, whose solution Δ_q=aq(q-1) corresponds to strict parabolicity of…
The Kohn-Luttinger effect and anomalous pairing in new superconducting systems and graphene
M. Yu. Kagan, V. V. Val'kov, V. A. Mitskan +1
We present a review of theoretical investigations into the Kohn-Luttinger nonphonon superconductivity mechanism in various 3D and 2D repulsive electron systems described by the Fer…
Effect of long-range interactions on the Kohn-Luttinger mechanism of the Cooper instability in the Shubin-Vonsowsky model
M. Yu. Kagan, V. V. Val'kov, V. A. Mitskan +1
The problem of Cooper instability is studied by implementing the Kohn-Luttinger mechanism in the framework of the Shubin-Vonsowsky model taking into account the intersite Coulomb i…
The Kohn-Luttinger superconductivity in idealized doped graphene
M. Yu. Kagan, V. V. Val'kov, V. A. Mitskan +1
Idealized graphene monolayer is considered neglecting the van der Waals potential of the substrate and the role of the nonmagnetic impurities. The effect of the long-range Coulomb…
How to observe the localization law σ(ω) (-iω) for conductivity?
I. M. Suslov
The Berezinskii localization law σ(ω) (-iω) for frequency-dependent conductivity was never questioned from the theoretical side, but never observed experimentally. In fact, this re…