Zero-Temperature Magnetic Transition in an Easy-Axis Kondo Lattice Model
作者： Jian-Xin Zhu , Stefan Kirchner , Ralf Bulla , Qimiao Si
DOI: 10.1103/PHYSREVLETT.99.227204
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摘要: We address the quantum transition of a spin-$1/2$ antiferromagnetic Kondo lattice model with an easy-axis anisotropy using extended dynamical mean field theory. derive results in real frequency by bosonic numerical renormalization group (BNRG) method and compare them Monte Carlo Matsubara frequency. The BNRG show logarithmic divergence critical local spin susceptibility, signaling destruction screening. $T=0$ is consistent being second order. also display some subtle features; we identify their origin suggest means for further microscopic studies.
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sci-hub.se 参考文章(36)
A. Schröder, G. Aeppli, R. Coldea, M. Adams, O. Stockert, H.v. Löhneysen, E. Bucher, R. Ramazashvili, P. Coleman, Onset of antiferromagnetism in heavy-fermion metals Nature. ,vol. 407, pp. 351- 355 ,(2000) , 10.1038/35030039
K Haule, A Rosch, J Kroha, P Wölfle, None, Pseudogaps in the t-J model: An extended dynamical mean-field theory study Physical Review B. ,vol. 68, pp. 155119- ,(2003) , 10.1103/PHYSREVB.68.155119
Qimiao Si, J. Lleweilun Smith, Kevin Ingersent, Silvio Rabello, Locally critical quantum phase transitions in strongly correlated metals Nature. ,vol. 413, pp. 804- 808 ,(2001) , 10.1038/35101507
J. Rech, P. Coleman, G. Zarand, O. Parcollet, Schwinger boson approach to the fully screened kondo model Physical Review Letters. ,vol. 96, pp. 016601- ,(2006) , 10.1103/PHYSREVLETT.96.016601
R. Chitra, G. Kotliar, Effect of long range coulomb interactions on the mott transition Physical Review Letters. ,vol. 84, pp. 3678- 3681 ,(2000) , 10.1103/PHYSREVLETT.84.3678
R. Küchler, N. Oeschler, P. Gegenwart, T. Cichorek, K. Neumaier, O. Tegus, C. Geibel, J. A. Mydosh, F. Steglich, L. Zhu, Q. Si, Divergence of the Grüneisen Ratio at Quantum Critical Points in Heavy Fermion Metals Physical Review Letters. ,vol. 91, pp. 066405- ,(2003) , 10.1103/PHYSREVLETT.91.066405
Ping Sun, Gabriel Kotliar, Extended dynamical mean field theory study of the periodic Anderson model. Physical Review Letters. ,vol. 91, pp. 037209- ,(2003) , 10.1103/PHYSREVLETT.91.037209
Ping Sun, Gabriel Kotliar, Consequences of the local spin self-energy approximation on the heavy-fermion quantum phase transition Physical Review B. ,vol. 71, pp. 245104- ,(2005) , 10.1103/PHYSREVB.71.245104
Catherine Pépin, Fractionalization and Fermi-surface volume in heavy-fermion compounds: the case of YbRh2Si2. Physical Review Letters. ,vol. 94, pp. 066402- 066402 ,(2005) , 10.1103/PHYSREVLETT.94.066402
T. Moriya, Y. Takahashi, Spin Fluctuations in Itinerant Electron Magnetism ,(1985)