Holographic impurities and Kondo effect

2015/11/30 by Johanna Erdmenger, J. Erdmenger, Mario Flory +10 · 37 citations
Physics and Astronomy · #Condensed matter physics #Entropy (arrow of time) #Holography #Impurity #Kondo effect #Kondo insulator #Kondo model #Magnetic impurity #Phase (matter) #Physics #Quantum #Quantum and electron transport phenomena #Quantum entanglement #Quantum many-body systems #Quantum mechanics #Quantum, superfluid, helium dynamics #Spin (aerodynamics) #Thermodynamics #cond-mat.str-el #hep-th

paper · pdf · doi:10.1002/prop.201500079

published in Fortschritte der Physik 64(4-5), 322-329 (Wiley) · 17 pages, 9 figures, Proceedings for COST MP1210 (The String Theory Universe) at Leuven

arxiv created 2015/11/30 · openalex publication_date 2016/03/21 · arxiv updated 2016/11/03 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

Magnetic impurities are responsible for many interesting phenomena in condensed matter systems, notably the Kondo effect and quantum phase transitions. Here we present a holographic model of a magnetic impurity that captures the main physical properties of the large‐spin Kondo effect. We estimate the screening length of the Kondo cloud that forms around the impurity from a calculation of entanglement entropy and show that our results are consistent with the g ‐theorem.

Citations

• The Large-N Limit of Superconformal Field Theories and Supergravity

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