Spectral properties of quasiparticle excitations induced by magnetic moments in superconductors
نویسندگان
چکیده
منابع مشابه
Field-induced quasiparticle excitations in novel type II superconductors
We show that the field dependence of the magnetic penetration depth (λ), for which muon spin rotation (μSR) is an excellent microscopic probe, provides useful information on the degree of anisotropy for the superconducting order parameter. In type II superconductors associated with anisotropic order parameters, λ is sensitive to the quasiparticle excitation induced by the Doppler shift due to a...
متن کاملMagnetic resonant excitations in High-Tc superconductors
More than fifteen years after the high temperature superconductivity discovery, antiferromagnetic (AF) fluctuations pairing mechanism[1] is still highly controversial. However, inelastic neutron scattering (INS) measurements have successfully brought to light the existence of unusual AF excitations that develop below Tc and could be the hallmark of an unexpected spin-1 collective mode, tightly ...
متن کاملSpin screening of magnetic moments in superconductors
– We consider ferromagnetic particles embedded into a superconductor and study the screening of their magnetic moments by the spins of the Cooper pairs in the superconductor. It is shown that a magnetic moment opposite to the one of the ferromagnetic particle is induced in the superconductor. In the case of a small itinerant ferromagnet grain and low temperatures the full screening of the magne...
متن کاملMagnetic excitations in iron chalcogenide superconductors.
Nuclear magnetic resonance and neutron scattering experiments in iron chalcogenide superconductors are reviewed to make a survey of the magnetic excitations in FeSe, FeSe1-x Te x and alkali-metal-doped Ax Fe2-y Se2 (A = K, Rb, Cs, etc). In FeSe, the intimate relationship between the spin fluctuations and superconductivity can be seen universally for the variations in the off-stoichiometry, the ...
متن کاملSpectral properties of superconductors with ferromagnetically ordered magnetic impurities
We present a comprehensive theoretical study of thermodynamic properties of superconductors with a dilute concentration of magnetic impurities, with focus on how the properties of the superconducting host change if the magnetic moments of the impurities order ferromagnetically. Scattering off the magnetic impurities leads to the formation of a band of Yu-Shiba-Rusinov states within the supercon...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Physical Review B
سال: 1997
ISSN: 0163-1829,1095-3795
DOI: 10.1103/physrevb.55.12648