Helimagnetic Structure and Heavy-Fermion-Like Behavior in the Vicinity of the Quantum Critical Point in Mn3 P

Hisashi Kotegawa; Masaaki Matsuda; Feng Ye; Yuki Tani; Kohei Uda; Yoshiki Kuwata; Hideki Tou; Eiichi Matsuoka; Hitoshi Sugawara; Takahiro Sakurai; Hitoshi Ohta; Hisatomo Harima; Keiki Takeda; Junichi Hayashi; Shingo Araki; Tatsuo C. Kobayashi

doi:10.1103/PhysRevLett.124.087202

Helimagnetic Structure and Heavy-Fermion-Like Behavior in the Vicinity of the Quantum Critical Point in Mn3 P

Hisashi Kotegawa, Masaaki Matsuda, Feng Ye, Yuki Tani, Kohei Uda, Yoshiki Kuwata, Hideki Tou, Eiichi Matsuoka, Hitoshi Sugawara, Takahiro Sakurai, Hitoshi Ohta, Hisatomo Harima, Keiki Takeda, Junichi Hayashi, Shingo Araki, Tatsuo C. Kobayashi

Research output: Contribution to journal › Article

Abstract

Antiferromagnet Mn3P with Neel temperature TN=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 ∼1.6 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 Mn3P, which is most likely effected by the underlying frustration effect.

Original language	English
Article number	087202
Journal	Physical Review Letters
Volume	124
Issue number	8
DOIs	https://doi.org/10.1103/PhysRevLett.124.087202
Publication status	Published - Feb 25 2020

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Physics and Astronomy(all)

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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. (2020). Helimagnetic Structure and Heavy-Fermion-Like Behavior in the Vicinity of the Quantum Critical Point in Mn3 P. Physical Review Letters, 124(8), [087202]. https://doi.org/10.1103/PhysRevLett.124.087202

Helimagnetic Structure and Heavy-Fermion-Like Behavior in the Vicinity of the Quantum Critical Point in Mn3 P. / Kotegawa, Hisashi; Matsuda, Masaaki; Ye, Feng; Tani, Yuki; Uda, Kohei; Kuwata, Yoshiki; Tou, Hideki; Matsuoka, Eiichi; Sugawara, Hitoshi; Sakurai, Takahiro; Ohta, Hitoshi; Harima, Hisatomo; Takeda, Keiki; Hayashi, Junichi; Araki, Shingo ; Kobayashi, Tatsuo C.

In: Physical Review Letters, Vol. 124, No. 8, 087202, 25.02.2020.

Research output: Contribution to journal › Article

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, TC 2020, 'Helimagnetic Structure and Heavy-Fermion-Like Behavior in the Vicinity of the Quantum Critical Point in Mn3 P', Physical Review Letters, vol. 124, no. 8, 087202. https://doi.org/10.1103/PhysRevLett.124.087202

Kotegawa, Hisashi ; Matsuda, Masaaki ; Ye, Feng ; Tani, Yuki ; Uda, Kohei ; Kuwata, Yoshiki ; Tou, Hideki ; Matsuoka, Eiichi ; Sugawara, Hitoshi ; Sakurai, Takahiro ; Ohta, Hitoshi ; Harima, Hisatomo ; Takeda, Keiki ; Hayashi, Junichi ; Araki, Shingo ; Kobayashi, Tatsuo C. / Helimagnetic Structure and Heavy-Fermion-Like Behavior in the Vicinity of the Quantum Critical Point in Mn3 P. In: Physical Review Letters. 2020 ; Vol. 124, No. 8.

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abstract = "Antiferromagnet Mn3P with Neel temperature TN=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 ∼1.6 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 Mn3P, which is most likely effected by the underlying frustration effect.",

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AU - Kuwata, Yoshiki

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AU - Matsuoka, Eiichi

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AU - Ohta, Hitoshi

AU - Harima, Hisatomo

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AB - Antiferromagnet Mn3P with Neel temperature TN=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 ∼1.6 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 Mn3P, which is most likely effected by the underlying frustration effect.

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10.1103/PhysRevLett.124.087202