Maxim Khodas

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Recent measurements of the doping dependence of the London penetration depth λ(x) at low T in clean samples of isovalent BaFe2(As(1-x)P(x))2 at T≪T(c) [Hashimoto et al., Science 336, 1554 (2012)] revealed a peak in λ(x) near optimal doping x=0.3. The observation of the peak at T≪T(c), points to the existence of a quantum critical point beneath the(More)
We analyze the pairing symmetry in Fe-based superconductors AFe2Se2 (A=K, Rb, Cs) which contain only electron pockets. We argue that the pairing condensate in such systems contains not only intrapocket component but also interpocket component, made of fermions belonging to different electron pockets. We analyze the interplay between intrapocket and(More)
Andrey V. Chubukov, M. Khodas, and Rafael M. Fernandes School of Physics and Astronomy, University of Minnesota, Minneapolis, Minneapolis 55455, USA Racah Institute of Physics, The Hebrew University, Jerusalem 91904, Israel Department of Physics and Astronomy, University of Iowa, Iowa City, Iowa 52242, USA (Received 14 June 2016; revised manuscript received(More)
I. A. Dmitriev,1,2,* M. Khodas,3 A. D. Mirlin,1,2,† D. G. Polyakov,1 and M. G. Vavilov4 1Institut für Nanotechnologie, Forschungszentrum Karlsruhe, 76021 Karlsruhe, Germany 2Institut für Theorie der Kondensierten Materie, Universität Karlsruhe, 76128 Karlsruhe, Germany 3Department of Condensed Matter Physics and Materials Science, Brookhaven National(More)
We evaluate the dynamic structure factor S(q, omega) of interacting one-dimensional spinless fermions with a nonlinear dispersion relation. The combined effect of the nonlinear dispersion and of the interactions leads to new universal features of S(q, omega). The sharp peak S(q, omega) approximately q(delta(omega -uq), characteristic for the(More)
The magnetotransport in single layer graphene has been experimentally investigated in magnetic fields up to 18 T as a function of temperature. A pronounced T dependence is observed for T≲50  K, which is either metallic, or insulating, depending on the filling factor ν. The metal-insulator transition (MIT) occurs at |ν{c}|∼0.65 and in the regime of the(More)
L. Zhang,1 J. Camacho,1 H. Cao,2 Y. P. Chen,2 M. Khodas,1,3 D. E. Kharzeev,3 A. M. Tsvelik,1 T. Valla,1 and I. A. Zaliznyak1,* 1CMPMSD, Brookhaven National Laboratory, Upton, New York 11973, USA 2Department of Physics, Purdue University, West Lafayette, Indiana 47907, USA 3Physics Department, Brookhaven National Laboratory, Upton, New York 11973, USA(More)
We report on magneto-oscillations in differential resistivity of a two-dimensional electron system subject to intense microwave radiation. The period of these oscillations is determined not only by microwave frequency but also by its intensity. A theoretical model based on quantum kinetics at high microwave power captures all important characteristics of(More)