Kondo resonance is a term used in physics to describe a phenomenon related to the interaction between electrons in a metal and a magnetic impurity. This term is pronounced /kɒndoʊ rɛzənəns/ where "kɒndoʊ" rhymes with "gondola" and "rɛzənəns" rhymes with "sentiments". The first syllable "kɒn" is emphasized, and the combination "doʊ" is pronounced as a single sound. The stress falls on the second syllable "rɛz" and the final syllable "əns" is pronounced with a neutral vowel sound.
Kondo resonance refers to a characteristic phenomenon that occurs in condensed matter physics, particularly in the study of quantum mechanical systems that exhibit strong correlations between electrons. The term "Kondo resonance" is named after the Japanese physicist Jun Kondo who first described this phenomenon in 1964.
In a system exhibiting Kondo resonance, a localized magnetic impurity (such as an atom or a magnetic nanoparticle embedded in a metal) interacts with a surrounding conduction electron sea. At low temperatures, the impurity's magnetic moment due to its unpaired electron(s) couples with the many conduction electrons around it.
As a result of this coupling, the impurity's spin becomes screened by the surrounding conduction electrons. This leads to a characteristic behavior in the system's electronic structure, where a sharp resonance peak appears in the density of states of the conduction electrons near the Fermi energy. This peak represents the hybridization or mixing of the impurity's electron state with the conduction electron states.
The Kondo resonance is a collective effect arising from the many-body interactions between the impurity and the conduction electrons. It is responsible for various intriguing phenomena, such as the Kondo effect and the emergence of a strongly correlated electron state. Kondo resonances have been widely studied and observed in various materials and nanostructures, and they play a significant role in understanding and explaining the behavior of strongly correlated electronic systems.
The term "Kondo resonance" in physics is named after Jun Kondo, a Japanese physicist who made significant contributions to the understanding of the Kondo effect. Jun Kondo first described the phenomenon in 1964, which led to the naming of the Kondo resonance in his honor.