Two-Impurity Yu-Shiba-Rusinov States in Coupled Quantum Dots
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Documents
- PhysRevB.102.195143
Final published version, 2.79 MB, PDF document
- Two-impurity Yu-Shiba-Rusinov states in coupled quantum dots
Final published version, 2.79 MB, PDF document
Using Coulomb blockaded double quantum dots, we realize the superconducting analog of the celebrated two-impurity Kondo model. Focusing on gate regions with a single spin-1/2 on each dot, we demonstrate gate-tuned changes of the ground state from an interdot singlet to independently screened Yu-Shiba-Rusinov singlets. In contrast to the zero-temperature two-impurity Kondo model, the crossover between these two singlets is heralded by quantum phase boundaries to nearby doublet phases, in which only a single spin is screened. We identify all four ground states via transport measurements.
Original language | English |
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Article number | 195143 |
Journal | Physical Review B |
Volume | 102 |
Issue number | 19 |
Number of pages | 15 |
ISSN | 2469-9950 |
DOIs | |
Publication status | Published - 23 Nov 2020 |
Bibliographical note
[Qdev]
Links
- https://arxiv.org/abs/1812.09303
Submitted manuscript
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