TY - JOUR
T1 - Giant hall resistivity and magnetoresistance in cubic chiral antiferromagnet EuPtSi
AU - Kakihana, Masashi
AU - Aoki, Dai
AU - Nakamura, Ai
AU - Honda, Fuminori
AU - Nakashima, Miho
AU - Amako, Yasushi
AU - Nakamura, Shota
AU - Sakakibara, Toshiro
AU - Hedo, Masato
AU - Nakama, Takao
AU - Ōnuki, Yoshichika
N1 - Funding Information:
Acknowledgments We are very grateful to the helpful discussions with H. Sato, H. Kawamura, T. Takeuchi, Y. Fujishiro, and H. Harima. This work was supported by JSPS KAKENHI Grant Numbers JP16H01078, JP25610097, JP16K05453, JP17K05547, JP15H05884, JP16H04006, JP15H05883, JP15H03682, and JP15K05156.
Publisher Copyright:
©2018 The Physical Society of Japan.
PY - 2018
Y1 - 2018
N2 - EuPtSi crystallizes in the cubic chiral structure (P213, No. 198), which is the same as the non-centrosymmetric space group of MnSi with the skyrmion structure, and orders antiferromagnetically below a Néel temperature TN = 4.05 K. The magnetization at 2 K for the [111] direction indicates two metamagnetic transitions at the magnetic fields HA1 = 9.2 kOe and HA2 = 13.8 kOe and saturates above Hc = 26.6 kOe. The present magnetic phase between HA1 and HA2 is most likely closed in the ðH; T Þ phase and is observed in a wide temperature range from 3.6 to 0.5 K. In this magnetic phase known as the A-phase, we found giant additional Hall resistivity ΔρH(H) and magnetoresistance Δρ(H), reaching ΔρH(H) = 0.12 µΩ·cm and Δρ(H) = 1.4 µΩ·cm, respectively. These findings are obtained for H ∥ [111] and [100], but not for H ∥ [110] and [112], revealing an anisotropic behavior in the new material EuPtSi.
AB - EuPtSi crystallizes in the cubic chiral structure (P213, No. 198), which is the same as the non-centrosymmetric space group of MnSi with the skyrmion structure, and orders antiferromagnetically below a Néel temperature TN = 4.05 K. The magnetization at 2 K for the [111] direction indicates two metamagnetic transitions at the magnetic fields HA1 = 9.2 kOe and HA2 = 13.8 kOe and saturates above Hc = 26.6 kOe. The present magnetic phase between HA1 and HA2 is most likely closed in the ðH; T Þ phase and is observed in a wide temperature range from 3.6 to 0.5 K. In this magnetic phase known as the A-phase, we found giant additional Hall resistivity ΔρH(H) and magnetoresistance Δρ(H), reaching ΔρH(H) = 0.12 µΩ·cm and Δρ(H) = 1.4 µΩ·cm, respectively. These findings are obtained for H ∥ [111] and [100], but not for H ∥ [110] and [112], revealing an anisotropic behavior in the new material EuPtSi.
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U2 - 10.7566/JPSJ.87.023701
DO - 10.7566/JPSJ.87.023701
M3 - Article
AN - SCOPUS:85040763006
SN - 0031-9015
VL - 87
JO - journal of the physical society of japan
JF - journal of the physical society of japan
IS - 2
M1 - 023701
ER -