TY  - JOUR
AU  - Costi, T.A.
AU  - Zlatic, V.
TI  - Charge Kondo anomalies in PbTe doped with Tl impurities
JO  - Physical review letters
VL  - 108
SN  - 0031-9007
CY  - College Park, Md.
PB  - APS
M1  - PreJuSER-19735
SP  - 036402
PY  - 2012
N1  - We thank K. M. Seemann, D. J. Singh, H. Murakami, P. Coleman, G. Kotliar, and I. R. Fisher for discussions and D. J. Singh, H. Murakami, and I. R. Fisher for data [8,22]. V. Z. acknowledges support by Croatian MZOS Grant No. 0035-0352843-2849, NSF Grant No. DMR-1006605, and Forschungszentrum Julich. T. A. C. acknowledges supercomputer support from the John von Neumann Institute for Computing (Julich).
AB  - We investigate the properties of PbTe doped with a small concentration x of Tl impurities acting as acceptors and described by Anderson impurities with negative onsite correlation energy. We use the numerical renormalization group method to show that the resulting charge Kondo effect naturally accounts for the unusual low temperature and doping dependence of normal state properties, including the self-compensation effect in the carrier density and the nonmagnetic Kondo anomaly in the resistivity. These are found to be in good qualitative agreement with experiment. Our results for the Tl s-electron spectral function provide a new interpretation of point contact data.
KW  - J (WoSType)
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000299328500019
DO  - DOI:10.1103/PhysRevLett.108.036402
UR  - https://juser.fz-juelich.de/record/19735
ER  -