Physics – Condensed Matter – Strongly Correlated Electrons
Scientific paper
2011-09-14
Physical Review B 84, 205111 (2011)
Physics
Condensed Matter
Strongly Correlated Electrons
12 pages, 9 figures
Scientific paper
10.1103/PhysRevB.84.205111
A detailed analysis is given of the T^2 term in the resistivity observed in electron-doped SrTiO3. Novel bandstructure data are presented, which provide values for the bare mass, density of states, and plasma frequency of the quasiparticles as a function of doping. It is shown that these values are renormalized by approximately a factor 2 due to electron-phonon interaction. It is argued that the quasiparticles are in the anti-adiabatic limit with respect to electron-phonon interaction. The condition of anti-adiabatic coupling renders the interaction mediated through phonons effectively non-retarded. We apply Fermi-liquid theory developed in the 70's for the T^2 term in the resistivity of common metals, and combine this with expressions for Tc and with the Brinkman-Platzman-Rice (BPR) sum-rule to obtain Landau parameters of n-type SrTiO3. These parameters are comparable to those of liquid 3He, indicating interesting parallels between these Fermi-liquids despite the differences between the composite fermions from which they are formed.
der Marel Dirk van
Mazin Igor I.
van Mechelen L. M. J.
No associations
LandOfFree
Common Fermi-liquid origin of T-squared resistivity and superconductivity in n-type SrTiO3 does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Common Fermi-liquid origin of T-squared resistivity and superconductivity in n-type SrTiO3, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Common Fermi-liquid origin of T-squared resistivity and superconductivity in n-type SrTiO3 will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-569516