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Shiba states of an Anderson impurity in hybrid normal-superconducting systems

AuthorsZitko, Rok; Lim, Jong Soo; López, Rosa ; Aguado, Ramón
KeywordsQuantum impurities
Majorana fermions
Kondo physics
Shiba states
Issue Date2014
CitationXXXVIII International Conference of Theoretical Physics. Correlations and Coherence at Different Scales (2014)
AbstractMany schemes for detecting the presence of Majorana zero-energy states in semiconductor nanowires coupled to superconductors involve a weakly coupled normal-state electrode for performing the tunneling spectroscopy. Since the normal-state electrode can lead to zero-bais anomalies associated with Kondo screening. It is important to better understand the phase diagram and spectral features of an Anderson impurity coupled to both superconducting and normal-state leads, in particular in the presence of magnetic field. I will also present detailed results for the Shiba doublet state splitting in magnetic field, which reveal a surprisingly linear dependence between the field of singlet-doublet crossing and the hybridization strength.
DescriptionPaper presented at the XXXVIII International Conference of Theoretical Physics - Correlations and Coherence at Different Scales, which took place in Ustrón (Poland) during 5-10th September 2014.
Appears in Collections:(ICMM) Comunicaciones congresos
(IFISC) Comunicaciones congresos
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