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Journal articles
Tunable quantum criticality and super-ballistic transport in a “charge” Kondo circuit
Abstract : Quantum phase transitions (QPTs) are ubiquitous in strongly-correlated materials. However the microscopic complexity of these systems impedes the quantitative understanding of QPTs. Here, we observe and thoroughly analyze the rich strongly-correlated physics in two profoundly dissimilar regimes of quantum criticality. With a circuit implementing a quantum simulator for the three-channel Kondo model, we reveal the universal scalings toward different low-temperature fixed points and along the multiple crossovers from quantum criticality. Notably, an unanticipated violation of the maximum conductance for ballistic free electrons is uncovered. The present charge pseudospin implementation of a Kondo impurity opens access to a broad variety of strongly-correlated phenomena
https://hal-cea.archives-ouvertes.fr/cea-01870180
Contributor : Bruno Savelli Connect in order to contact the contributor
Submitted on : Monday, April 12, 2021 - 2:38:27 PM
Last modification on : Tuesday, January 4, 2022 - 4:50:19 AM
Long-term archiving on: : Tuesday, July 13, 2021 - 6:51:00 PM
Contributor : Bruno Savelli Connect in order to contact the contributor
Submitted on : Monday, April 12, 2021 - 2:38:27 PM
Last modification on : Tuesday, January 4, 2022 - 4:50:19 AM
Long-term archiving on: : Tuesday, July 13, 2021 - 6:51:00 PM
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