A magnetic impurity is an impurity in a host metal that has a magnetic moment. The magnetic impurity can then interact with the conduction electrons of the metal, leading to interesting physics such as the Kondo effect , and heavy fermion behaviour.

A 'Magnetic Impurity' refers to a magnetic element present in a nonmagnetic metal crystal, causing the conduction electron gas to become magnetized in its vicinity due to exchange coupling, leading to interactions between impurities and …

According to the Anderson model, the character of magnetic impurities in solids results from a competition between (i) hybridization of local and extended states, which tends to delocalize magnetic electrons, and (ii) the on-site Coulomb interactions among electrons, which stabilize magnetic moments.

2024年5月27日 · Magnetic impurities are minute particles or elements within a material that can significantly disrupt magnetic properties. These impurities are particularly crucial in the field of magnetostatics, the branch of physics dealing with magnetic fields in …

2006年5月9日 · The nonmagnetic impurity resonances in unconventional superconductors are directly related to the Yu-Shiba-Rusinov states around magnetic impurities in conventional s-wave systems.

2011年1月23日 · Nature Physics - The Kondo effect describes electrons scattering off a magnetic impurity, which affects the resistivity of a metal at low temperatures. In the case of buried iron or cobalt...

But no less important are systems (dilute magnetic alloys etc.) in which magnetic atoms are dissolved in non-magnetic matrices, or magnetic atoms of one type are embedded in crystals formed by other magnetic atoms. The electronic structure …

As follows from estimates [7.9], the Mn impurity in Al has a local magnetic moment of 2.46JlB, which is consistent with experimental evidence [7.10] that AIMn is a spin-fluctuating system.

1981年2月1日 · We consider the behavior of the spin of an Mn 2+ impurity in the orbital magnetic material K 2 CuF 4 which exhibits a quasi–two-dimensional type of ferromagnetic spin ordering.

In our discussion of paramagnetism we considered the problem of a magnetic ion dissolved into a nonmagnetic host. We shall now consider what happens when a magnetic impurity is introduced into a magnetic insulating host.