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Negative absolute conductivity in photoexcited metals
Giuliano Chiriacò, Andrew J. Millis, Igor L. Aleiner
We show that in a model of a metal photoexcited by a transient pump pulse resonant with a phonon mode the absolute dc conductivity may become negative, depending on the interplay b…
Saturation of Strong Electron-Electron Umklapp Scattering at High Temperature
Igor Aleiner, Oded Agam
We consider clean metals, at finite temperature, in which the inelastic rate, , can become of the order of, or larger, than the band splitting energy. We show that i…
Competing Nematic, Anti-ferromagnetic and Spin-flux orders in the Ground State of Bilayer Graphene
Y. Lemonik, I. L. Aleiner, V. I. Fal'ko
We analyze the phase diagram of the Bilayer graphene (BLG) at zero temperature and doping. Assuming that at the high energies the electronic system of BLG can be described within a…
Tunable Strongly Correlated Band Insulator
V. V. Cheianov, I. L. Aleiner, V. I. Fal'ko
We introduce the notion of the strongly correlated band insulator (SCI), where the lowest energy excitations are collective modes (excitons) rather than the single particles. We co…
Spontaneous symmetry breaking and Lifshitz transition in bilayer graphene
Y. Lemonik, I. L. Aleiner, C. Toke +1
We derive the renormalization group equations describing all the short-range interactions in bilayer graphene allowed by symmetry and the long range Coulomb interaction. For certai…
Collective mode description for a clean Fermi gas with repulsion in arbitrary dimensions: interaction of spin excitations and its consequences
K. B. Efetov, I. L. Aleiner
We discuss a recent bosonization method developed to study clean Fermi gases with a repulsion in any dimensions. The method enables one to consider both density and spin excitation…
Supersymmetric low-energy theory and renormalization group for a clean Fermi gas with a repulsion in arbitrary dimensions
I. L. Aleiner, K. B. Efetov
We suggest a new method of calculations for a clean Fermi gas with a repulsion in any dimension. This method is based on writing equations for quasiclassical Green functions and re…