Critical current 0-π transition in designed josephson quantum dot junctions
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Critical current 0-π transition in designed josephson quantum dot junctions. / Jørgensen, H. Ingerslev; Novotný, T.; Grove-Rasmussen, K.; Flensberg, K.; Lindelof, P. E.
I: Nano Letters, Bind 7, Nr. 8, 01.08.2007, s. 2441-2445.Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › fagfællebedømt
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TY - JOUR
T1 - Critical current 0-π transition in designed josephson quantum dot junctions
AU - Jørgensen, H. Ingerslev
AU - Novotný, T.
AU - Grove-Rasmussen, K.
AU - Flensberg, K.
AU - Lindelof, P. E.
PY - 2007/8/1
Y1 - 2007/8/1
N2 - We report on quantum dot based josephson junctions designed specifically for measuring the supercurrent. From high-accuracy fitting of the current-voltage characteristics, we determine the full magnitude of the supercurrent (critical current). Strong gate modulation of the critical current is observed through several consecutive Coulomb blockade oscillations. The critical current crosses zero close to, but not at, resonance due to the so-called 0-π transition in agreement with a simple theoretical model.
AB - We report on quantum dot based josephson junctions designed specifically for measuring the supercurrent. From high-accuracy fitting of the current-voltage characteristics, we determine the full magnitude of the supercurrent (critical current). Strong gate modulation of the critical current is observed through several consecutive Coulomb blockade oscillations. The critical current crosses zero close to, but not at, resonance due to the so-called 0-π transition in agreement with a simple theoretical model.
U2 - 10.1021/nl071152w
DO - 10.1021/nl071152w
M3 - Journal article
C2 - 17637018
AN - SCOPUS:34548164874
VL - 7
SP - 2441
EP - 2445
JO - Nano Letters
JF - Nano Letters
SN - 1530-6984
IS - 8
ER -
ID: 199595378