Coexistence of superconductivity and ferromagnetism in ferromagnetic metals NI Karchev, KB Blagoev, KS Bedell, PB Littlewood Physical review letters 86 (5), 846, 2001 | 137 | 2001 |

Effective chiral Lagrangian from quantum chromodynamics NI Karchev, AA Slavnov Teoreticheskaya i Matematicheskaya Fizika 65 (2), 192-201, 1985 | 95* | 1985 |

Magnon exchange mechanism of ferromagnetic superconductivity N Karchev Physical Review B 67 (5), 054416, 2003 | 30 | 2003 |

Effective chiral lagrangian from large N QCD NI Karchev, AA Slavnov Joint Inst. for Nuclear Research, 1985 | 30 | 1985 |

Towards the theory of ferrimagnetism N Karchev Journal of Physics: Condensed Matter 20 (32), 325219, 2008 | 20 | 2008 |

Infrared divergences of Green's functions and renormalization in massless theories. I SA Anikin, OI Zav'yalov, NI Karchev Theoretical and Mathematical Physics 44 (3), 751-760, 1980 | 20 | 1980 |

Generalized model from the model N Karchev Physical Review B 57 (17), 10913, 1998 | 16 | 1998 |

Nonlocal light-cone expansion of the product of currents and its renormalization group analysis SA Anikin, OI Zav'yalov, NI Karchev Teoreticheskaya i Matematicheskaya Fizika 38 (3), 291-305, 1979 | 15 | 1979 |

Magnon-mediated superconductivity in itinerant ferromagnets N Karchev Journal of Physics: Condensed Matter 15 (24), L385, 2003 | 13 | 2003 |

Effect of Jahn-Teller coupling on Curie temperature in the double-exchange model V Michev, N Karchev Physical Review B—Condensed Matter and Materials Physics 80 (1), 012403, 2009 | 10 | 2009 |

Two ferromagnetic phases in spin-Fermion systems N Karchev Physical Review B—Condensed Matter and Materials Physics 77 (1), 012405, 2008 | 10 | 2008 |

Light-cone expansion for a product of two gauge-invariant currents in QCD NI Karchev Nuclear Physics B 211 (1), 55-76, 1983 | 9 | 1983 |

Renormalization-group approach to spin-wave theory of quantum Heisenberg ferromagnets N Karchev Physical Review B 55 (10), 6372, 1997 | 8 | 1997 |

Towards the theory of ferrimagnetism: II N Karchev Journal of Physics: Condensed Matter 21 (21), 216003, 2009 | 7 | 2009 |

Graded spin-wave theory of the tJ model NI Karchev Theoretical and Mathematical Physics 92 (3), 988-996, 1992 | 7 | 1992 |

Electrodynamics of *s*-Wave Superconductors Using First-Order FormalismN Karchev Condensed Matter 2 (2), 20, 2017 | 6 | 2017 |

Quantum simulation of superexchange magnetism in linear ion crystals PA Ivanov, NI Karchev, NV Vitanov, DG Angelakis Physical Review A 90 (1), 012325, 2014 | 6 | 2014 |

Quantum critical behavior in three-dimensional one-band Hubbard model at half-filling N Karchev Annals of Physics 333, 206-220, 2013 | 6 | 2013 |

Curie temperature of the two-band double-exchange model for manganites V Michev, N Karchev Physical Review B—Condensed Matter and Materials Physics 76 (17), 174412, 2007 | 5 | 2007 |

Model for the field cooled and zero field cooled ferrimagnetic spinel N Karchev Journal of Magnetism and Magnetic Materials 396, 77-84, 2015 | 4 | 2015 |