Tuning quantum corrections to the conductance in Andreev quantum dots
S. Rodríguez-Pérez, G. C. Duarte-Filho, A. M. S. Macêdo
DOI 10.1103/PhysRevB.82.115453 · Physical Review B
Active bibliographic source — not scientific approval
Bibliographic access preserves source history; it does not approve extracted materials or validate reported claims. Review warnings on each occurrence separately.
Abstract
We study the leading quantum interference correction to the conductance of a ballistic quantum dot connected via barriers of arbitrary transparencies to both a normal-metal lead and a superconducting lead, in the absence of time-reversal symmetry. We find that the sign of the quantum correction can be tuned by the transparencies of the barriers. The validity of our final analytical result is confirmed by independent numerical simulations. We also present a simple and intuitive interpretation of the sign change in terms of an interplay between destructive and constructive interferences of pairs of Feynman paths.
Similar papers
Effects of Andreev reflection on the conductance of quantum chaotic dots
similarity 0.92Victor A. Gopar et al.
Source status unknown — claims are unverified
Renormalization effects in interacting quantum dots coupled to superconducting leads
similarity 0.91David Futterer et al.
Source status unknown — claims are unverified
Three-body Fermi-liquid corrections for Andreev transport through quantum dots
similarity 0.90Akira Oguri et al.
Source status unknown — claims are unverified
Dephasing-enabled triplet Andreev conductance
similarity 0.90B. Béri
Source status unknown — claims are unverified
Resonant Andreev Tunneling in Strongly Interacting Quantum Dots
similarity 0.89Rosario Fazio & Roberto Raimondi
Source status unknown — claims are unverified
Andreev reflection enhancement in semiconductor-superconductor structures
similarity 0.88Shlomi Bouscher et al.
Source status unknown — claims are unverified