Based on the Kubo formalism,the anomalous Hall effect in a magnetic two-dimensional hole gas withcubic-Rashba spin-orbit coupling is studied in the presence of 5-function scattering potential.When the weak,short-range...Based on the Kubo formalism,the anomalous Hall effect in a magnetic two-dimensional hole gas withcubic-Rashba spin-orbit coupling is studied in the presence of 5-function scattering potential.When the weak,short-rangeddisorder scattering is considered in the Born approximation,we find that the self-energy becomes diagonal inthe helicity basis and its value is independent of the wave number,and the vertex correction to the anomalous Hallconductivity due to impurity scattering vanishes when both subbands are occupied.That is to say,the anomalous Halleffect is not vanishing or influenced by the vertex correction for two-dimensional heavy-hole system,which is in sharpcontrast to the case of linear-Rashba spin-orbit coupling in the electron band when the short-range disorder scattering isconsidered and the extrinsic mechanism as well as the effect of external electric field on the SO interaction are ignored.展开更多
基金Supported by the Research Fund for Outstanding Young Teachers in Higher Education Institutions of Shanghai under Grant No.gjd08040the Scientific Research Startup Funds of SUESthe National Natural Science Foundation of China under Grant No.C-6201-10-001
文摘Based on the Kubo formalism,the anomalous Hall effect in a magnetic two-dimensional hole gas withcubic-Rashba spin-orbit coupling is studied in the presence of 5-function scattering potential.When the weak,short-rangeddisorder scattering is considered in the Born approximation,we find that the self-energy becomes diagonal inthe helicity basis and its value is independent of the wave number,and the vertex correction to the anomalous Hallconductivity due to impurity scattering vanishes when both subbands are occupied.That is to say,the anomalous Halleffect is not vanishing or influenced by the vertex correction for two-dimensional heavy-hole system,which is in sharpcontrast to the case of linear-Rashba spin-orbit coupling in the electron band when the short-range disorder scattering isconsidered and the extrinsic mechanism as well as the effect of external electric field on the SO interaction are ignored.
