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Dispersion of the neutron resonance in cuprate superconductors
Andrey V. Chubukov, Boldizsar Janko, Oleg Tchernyshyov
We argue that recently measured downward dispersion of the neutron resonance peak in cuprate superconductors is naturally explained if the resonance is viewed as a spin-1 collectiv…
Order from disorder in the double-exchange model
Nic Shannon, Andrey V. Chubukov
The magnetic excitations of the double exchange (DE) model are usually discussed in terms of an equivalent ferromagnetic Heisenberg model. However this equivalence is valid only at…
Fingerprints of spin-fermion pairing in cuprates
Ar. Abanov, Andrey V. Chubukov, Jörg Schmalian
We demonstrate that the feedback effect from bosonic excitations on fermions, which in the past allowed one to verify the phononic mechanism of a conventional, wave superconduc…
Where is the pi particle?
O. Tchernyshyov, M. R. Norman, A. V. Chubukov
We discuss the interplay of particle-particle and particle-hole spin-triplet channels in high-T_c superconductors using a quasiparticle dispersion motivated by angle-resolved photo…
Spectral function and conductivity in the normal state of the cuprates: a spin fluctuation study
R. Haslinger, Andrey V. Chubukov, Ar. Abanov
We study the spectral function and the optical conductivity for a system of fermions interacting with their collective spin fluctuations (the spin-fermion model…
Quantum-critical superconductivity in underdoped cuprates
Ar. Abanov, Andrey V. Chubukov, Jörg Schmalian
We argue that the pseudogap phase may be an attribute of the non-BCS pairing of quantum-critical, diffusive fermions near the antiferromagnetic quantum critical point. We derive an…