TY - JOUR
T1 - Thermopower near a critical point
AU - Entin-Wohlman, Ora
AU - Deutscher, Guy
AU - Orbach, R.
N1 - Funding Information:
Supported in part by the U.S. Israel Binational Science Foundation.
PY - 1976
Y1 - 1976
N2 - Previous calculations of the effect of a critical point on the thermopower of metallic ferromagnets are extended to include inelastic scattering processes. Denoting the (temperature-dependent) localized spin-spin correlation function by gk(), where k is the momentum transfer, and the frequency transfer, the thermopower is shown to be proportional to frequency integrals of g2kF() and frequency and wave-vector integrals of kgk(). Only if the spin-spin correlation function exhibits critical "slowing down" for all frequencies at all k's (an unlikely prospect) does our result reduce to those found previously.
AB - Previous calculations of the effect of a critical point on the thermopower of metallic ferromagnets are extended to include inelastic scattering processes. Denoting the (temperature-dependent) localized spin-spin correlation function by gk(), where k is the momentum transfer, and the frequency transfer, the thermopower is shown to be proportional to frequency integrals of g2kF() and frequency and wave-vector integrals of kgk(). Only if the spin-spin correlation function exhibits critical "slowing down" for all frequencies at all k's (an unlikely prospect) does our result reduce to those found previously.
UR - http://www.scopus.com/inward/record.url?scp=35949029829&partnerID=8YFLogxK
U2 - 10.1103/PhysRevB.14.4015
DO - 10.1103/PhysRevB.14.4015
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AN - SCOPUS:35949029829
SN - 0163-1829
VL - 14
SP - 4015
EP - 4020
JO - Physical Review B-Condensed Matter
JF - Physical Review B-Condensed Matter
IS - 9
ER -