TY - JOUR

T1 - Alternative Feynman-diagram method for the general-spin Kondo problem

AU - Barnes, S. E.

PY - 1988

Y1 - 1988

N2 - We introduce a new method of replacing spin operators with pseudofermions. For a spin value S there are 2S pseudofermions each of which can have spin up or down. In contrast to the standard Abrikosov method which has 2S+1 inequivalent fermions, i.e., one for each Sz value, the present pairs are all equivalent. It follows that the general spin expression is obtained by multiplying the S=(1/2 result by a ceratin combinational factor. This aids in the construction of rotationally invariant solutions for the general-spin Kondo problem for the case when n2S, where n is the number of conduction-electron scattering channels.

AB - We introduce a new method of replacing spin operators with pseudofermions. For a spin value S there are 2S pseudofermions each of which can have spin up or down. In contrast to the standard Abrikosov method which has 2S+1 inequivalent fermions, i.e., one for each Sz value, the present pairs are all equivalent. It follows that the general spin expression is obtained by multiplying the S=(1/2 result by a ceratin combinational factor. This aids in the construction of rotationally invariant solutions for the general-spin Kondo problem for the case when n2S, where n is the number of conduction-electron scattering channels.

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U2 - 10.1103/PhysRevB.37.2220

DO - 10.1103/PhysRevB.37.2220

M3 - Article

AN - SCOPUS:35949013869

VL - 37

SP - 2220

EP - 2222

JO - Physical Review B-Condensed Matter

JF - Physical Review B-Condensed Matter

SN - 2469-9950

IS - 4

ER -