Details

Autor(en) / Beteiligte

• Matsubayashi, K
• Hirayama, T
• Yamashita, T
• Ohara, S
• Kawamura, N
• Mizumaki, M
• Ishimatsu, N
• Watanabe, S
• Kitagawa, K
• Uwatoko, Y

Titel

Pressure-Induced Valence Crossover and Novel Metamagnetic Behavior near the Antiferromagnetic Quantum Phase Transition of YbNi3Ga9

Ist Teil von

• Physical review letters, 2015-02, Vol.114 (8)

Erscheinungsjahr

2015

Quelle

PROLA

Beschreibungen/Notizen

• We report electrical resistivity, ac magnetic susceptibility, and x-ray absorption spectroscopy measurements of intermediate valence YbNi3Ga9 under pressure and magnetic field. We have revealed a characteristic pressure-induced Yb valence crossover within the temperature-pressure phase diagram, and a first-order metamagnetic transition is found below Pc~9 GPa where the system undergoes a pressure-induced antiferromagnetic transition. As a possible origin of the metamagnetic behavior, a critical valence fluctuation emerging near the critical point of the first-order valence transition is discussed on the basis of the temperature-field-pressure phase diagram.