TY - JOUR
T1 - Observation of an unusual magnetic anomaly in the superconducting mixed state of heavy-fermion compound UBe13 by precise dc magnetization measurements
AU - Shimizu, Yusei
AU - Haga, Yoshinori
AU - Ikeda, Yoichi
AU - Yanagisawa, Tatsuya
AU - Amitsuka, Hiroshi
PY - 2012/11/20
Y1 - 2012/11/20
N2 - We have performed precise dc magnetization measurements for a single crystal of UBe13 down to 0.14K, up to 80kOe. We observed a magnetic anomaly in the superconducting (SC) mixed state at a field, named HMag* (∼26kOe, at 0.14K), implying that UBe13 has a magnetically unusual SC state. We studied the magnetization curves of UBe13, assuming that the HMag* anomaly originates from (1) and unusual SC diamagnetic response, or (2)a peculiarity of the normal-state magnetization due to vortices in the SC mixed state. The origin of the HMag* anomaly is discussed.
AB - We have performed precise dc magnetization measurements for a single crystal of UBe13 down to 0.14K, up to 80kOe. We observed a magnetic anomaly in the superconducting (SC) mixed state at a field, named HMag* (∼26kOe, at 0.14K), implying that UBe13 has a magnetically unusual SC state. We studied the magnetization curves of UBe13, assuming that the HMag* anomaly originates from (1) and unusual SC diamagnetic response, or (2)a peculiarity of the normal-state magnetization due to vortices in the SC mixed state. The origin of the HMag* anomaly is discussed.
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U2 - 10.1103/PhysRevLett.109.217001
DO - 10.1103/PhysRevLett.109.217001
M3 - Article
AN - SCOPUS:84870169406
SN - 0031-9007
VL - 109
JO - Physical Review Letters
JF - Physical Review Letters
IS - 21
M1 - 217001
ER -