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Helimagnetic Structure and Heavy-Fermion-Like Behavior in the Vicinity of the Quantum Critical Point in Mn$_3$P by Kotegawa, H.; Matsuda, M.; Ye, F.; Tani, Y.; Uda, K.; Kuwata, Y.; Tou, H.; Matsuoka, E.; Sugawara, H.; Sakurai, T.; Ohta, H.; Harima, H.; Takeda, K.; Hayashi, J.; Araki, S.; Kobayashi, T. C. is a scholarly article available to read on EtoBox.

What is Helimagnetic Structure and Heavy-Fermion-Like Behavior in the Vicinity of the Quantum Critical Point in Mn$_3$P about?

Antiferromagnet Mn$_3$P with Neel temperature $T_N=30$ K is composed of Mn-tetrahedrons and zigzag chains formed by three inequivalent Mn sites. Due to the nearly frustrated lattice with many short Mn-Mn bonds, competition of the exchange interactions is expected. We here investigate the magnetic structure and physical properties including pressure effect in single crystals of this material, and reveal a complex yet well-ordered helimagnetic structure. The itinerant character of this materials is strong, and the ordered state with small magnetic moments is easily suppressed under pressure, exhibiting a quantum critical point at $\sim1.6$ GPa. The remarkable mass renormalization, even in the ordered state, and an incoherent-coherent crossover in the low-temperature region, characterize an unusual electronic state in Mn$_3$P, which is most likely effected by the underlying frustration effect.

Author

Kotegawa, H.; Matsuda, M.; Ye, F.; Tani, Y.; Uda, K.; Kuwata, Y.; Tou, H.; Matsuoka, E.; Sugawara, H.; Sakurai, T.; Ohta, H.; Harima, H.; Takeda, K.; Hayashi, J.; Araki, S.; Kobayashi, T. C.

Published

2020

Language

EN