TY - JOUR
T1 - Quantum point contacts in a density-tunable two-dimensional electron gas
AU - Nuttinck, Sebastien
AU - Hashimoto, Katsushi
AU - Miyashita, Sen
AU - Saku, Tadashi
AU - Yamamoto, Yoshihisa
AU - Hirayama, Yoshiro
PY - 2000
Y1 - 2000
N2 - Quantum point contacts fabricated using a backgated two-dimensional electron-gas system show clear quantized features and a 0.7 anomaly in conductance. Using these density-tunable point contacts, we have studied the behavior of the 0.7 anomaly. The 0.7 step shifts down to around 0.5 as the electron density is decreased under a zero magnetic field. This suggests that electron-electron interactions play an important role in forming the conductance anomalies of quantum point contacts.
AB - Quantum point contacts fabricated using a backgated two-dimensional electron-gas system show clear quantized features and a 0.7 anomaly in conductance. Using these density-tunable point contacts, we have studied the behavior of the 0.7 anomaly. The 0.7 step shifts down to around 0.5 as the electron density is decreased under a zero magnetic field. This suggests that electron-electron interactions play an important role in forming the conductance anomalies of quantum point contacts.
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U2 - 10.1143/jjap.39.l655
DO - 10.1143/jjap.39.l655
M3 - Article
AN - SCOPUS:0034226484
VL - 39
SP - L655-L657
JO - Japanese Journal of Applied Physics, Part 1: Regular Papers & Short Notes
JF - Japanese Journal of Applied Physics, Part 1: Regular Papers & Short Notes
SN - 0021-4922
IS - 7 A
ER -