TY - JOUR
T1 - Search for superconducting energy gap in UPt3 by point-contact spectroscopy
AU - Gouchi, Jun
AU - Sumiyama, Akihiko
AU - Yamaguchi, Akira
AU - Motoyama, Gaku
AU - Kimura, Noriaki
AU - Yamamoto, Etsuji
AU - Haga, Yoshinori
AU - O'Nuki, Yoshichika
PY - 2014
Y1 - 2014
N2 - We have investigated the differential resistance of the point contacts between heavy-fermion superconductor UPt3 and a normal metal Pt, which were fabricated using a commercial piezo-electric actuator, and retried the observation of the energy gap of UPt3. A V-shaped dip is observed in both normal and superconducting states and disappeared around TK ∼ 20 K, suggesting that it is related to the Kondo effect. Below the superconducting transition temperature, a shallow double-minimum structure, which indicates the energy gap, has been observed for the contacts on the faces perpendicular to the a-, b- and c-axes of UPt3.
AB - We have investigated the differential resistance of the point contacts between heavy-fermion superconductor UPt3 and a normal metal Pt, which were fabricated using a commercial piezo-electric actuator, and retried the observation of the energy gap of UPt3. A V-shaped dip is observed in both normal and superconducting states and disappeared around TK ∼ 20 K, suggesting that it is related to the Kondo effect. Below the superconducting transition temperature, a shallow double-minimum structure, which indicates the energy gap, has been observed for the contacts on the faces perpendicular to the a-, b- and c-axes of UPt3.
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U2 - 10.1088/1742-6596/592/1/012066
DO - 10.1088/1742-6596/592/1/012066
M3 - Conference article
AN - SCOPUS:84925310653
VL - 592
JO - Journal of Physics: Conference Series
JF - Journal of Physics: Conference Series
SN - 1742-6588
IS - 1
M1 - 012066
T2 - 2014 International Conference on Strongly Correlated Electron Systems, SCES 2014
Y2 - 7 July 2014 through 14 July 2014
ER -