TY - JOUR
T1 - Quantum criticality and heavy fermion state in YbCo2Zn 20 under pressure and magnetic field
AU - Taga, Yuki
AU - Yoshiuchi, Shingo
AU - Ohya, Masahiro
AU - Sakaguchi, Jyunya
AU - Hirose, Yusuke
AU - Honda, Fuminori
AU - Takeuchi, Tetsuya
AU - Settai, Rikio
AU - Onuki, Yoshichika
PY - 2012/9
Y1 - 2012/9
N2 - We studied an effect of pressure on the heavy fermion state of YbCo 2Zn20 under magnetic fields. The critical pressure P c, where the electronic state changes from the heavy fermion state to the antiferromagnetic state, is estimated to be Pc≃1.8 GPa. The super-heavy fermion state in the Pc region is found to be strongly destroyed in magnetic fields for H ∥<100>. The field-induced quadrupolar phase, which is most likely realized only for H ∥<100>, is found to be robust even in the antiferromagnetic pressure region.
AB - We studied an effect of pressure on the heavy fermion state of YbCo 2Zn20 under magnetic fields. The critical pressure P c, where the electronic state changes from the heavy fermion state to the antiferromagnetic state, is estimated to be Pc≃1.8 GPa. The super-heavy fermion state in the Pc region is found to be strongly destroyed in magnetic fields for H ∥<100>. The field-induced quadrupolar phase, which is most likely realized only for H ∥<100>, is found to be robust even in the antiferromagnetic pressure region.
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U2 - 10.1143/JPSJS.81SB.SB064
DO - 10.1143/JPSJS.81SB.SB064
M3 - Article
AN - SCOPUS:84871795780
VL - 81
JO - Journal of the Physical Society of Japan
JF - Journal of the Physical Society of Japan
SN - 0031-9015
IS - SUPPL.B
M1 - SB064
ER -