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

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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.

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

Funding

We thank Kazuto Akiba for experimental supports. This work was supported by JSPS KAKENHI Grants No. JP15H05882, No. JP15H05885, No. JP18H04320, and No. 18H04321 (J-Physics), No. 15H03689 and No. 15H05745. This research used resources at the High Flux Isotope Reactor and the Spallation Neutron Source, DOE Office of Science User Facilities operated by the Oak Ridge National Laboratory.

Funders	Funder number
Japan Society for the Promotion of Science	17K05544, JP15H05882, JP15H05885, 19K21852, 18H04321, JP18H04320
J-Physics	15H05745, 15H03689

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10.1103/PhysRevLett.124.087202

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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), Article 087202. https://doi.org/10.1103/PhysRevLett.124.087202

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

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.",

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

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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, 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

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T1 - Helimagnetic Structure and Heavy-Fermion-Like Behavior in the Vicinity of the Quantum Critical Point in Mn3 P

AU - Kotegawa, Hisashi

AU - Matsuda, Masaaki

AU - Ye, Feng

AU - Tani, Yuki

AU - Uda, Kohei

AU - Kuwata, Yoshiki

AU - Tou, Hideki

AU - Matsuoka, Eiichi

AU - Sugawara, Hitoshi

AU - Sakurai, Takahiro

AU - Ohta, Hitoshi

AU - Harima, Hisatomo

AU - Takeda, Keiki

AU - Hayashi, Junichi

AU - Araki, Shingo

AU - Kobayashi, Tatsuo C.

PY - 2020/2/25

Y1 - 2020/2/25

N2 - 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.

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

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