TY - JOUR
T1 - Pressure-induced antiferroquadrupole order in CeTe
AU - Kawarasaki, Yasuharu
AU - Matsumura, Takeshi
AU - Sera, Masafumi
AU - Ochiai, Akira
PY - 2011/2
Y1 - 2011/2
N2 - We have discovered that the magnetic phase diagram of CeTe under high pressure becomes quite similar to that of CeB6, strongly suggesting that an antiferroquadrupolar ordering is realized. At 1.2 GPa, the transition temperature increases from 3 K at 0.5 T to 6.3 K at 14.5 T. Since the crystal-field ground state of CeTe is the Γ7 doublet without a quadrupolar degree of freedom, this ordering is considered to be realized through the off-diagonal matrix element between Γ7 and Γ8 excited state, whose energy level is lowered with increasing the pressure.
AB - We have discovered that the magnetic phase diagram of CeTe under high pressure becomes quite similar to that of CeB6, strongly suggesting that an antiferroquadrupolar ordering is realized. At 1.2 GPa, the transition temperature increases from 3 K at 0.5 T to 6.3 K at 14.5 T. Since the crystal-field ground state of CeTe is the Γ7 doublet without a quadrupolar degree of freedom, this ordering is considered to be realized through the off-diagonal matrix element between Γ7 and Γ8 excited state, whose energy level is lowered with increasing the pressure.
KW - Antiferroquadrupole order
KW - CeTe
KW - High pressure
KW - Kondo effect
KW - Magnetic phase diagram
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U2 - 10.1143/JPSJ.80.023713
DO - 10.1143/JPSJ.80.023713
M3 - Article
AN - SCOPUS:79951643231
VL - 80
JO - Journal of the Physical Society of Japan
JF - Journal of the Physical Society of Japan
SN - 0031-9015
IS - 2
M1 - 023713
ER -