纳米材料锰掺杂量子点中的近藤效应

摘要

采用非平衡格林函数方法，探讨了量子点掺杂锰原子纳米材料的低温输运特性。结果表明，输运受到掺杂锰原子的强烈影响。具体来说，在微分电导中出现（2S+1）个近藤劈裂峰，锰原子表现为一个多值量子化有效磁场，导致这种劈裂。%The Kondo transport properties of an Mn-doped quantum dot are investigated by Hubbard operator Green function method. The transport is greatly influenced by Mn-doped atom. At low temperature, (2S+1) Kondo peaks occur in the local DOS and conductance, which originates from the effective quantum magnetic field.