TY - JOUR
T1 - Magnetic field effect on the chiral magnetism of noncentrosymmetric UPtGe
T2 - Experiment and theory
AU - Miyake, Atsushi
AU - Sandratskii, Leonid M.
AU - Nakamura, Ai
AU - Honda, Fuminori
AU - Shimizu, Yusei
AU - Li, Dexin
AU - Homma, Yoshiya
AU - Tokunaga, Masashi
AU - Aoki, Dai
N1 - Funding Information:
The authors are grateful to A. Pourret and Y. Tokunaga for fruitful discussions. This research was carried out (in part) at the International Research Center for Nuclear Materials Science, Institute for Materials Research, Tohoku University. This work was partially supported by the MEXT of Japan Grants-in-Aid for Scientific Research (JP15K17700, JP15K05156, JP15H05882, JP15K05884, JP15K21732, JP15KK0149, and JP16H04006).
Publisher Copyright:
© 2018 American Physical Society.
PY - 2018/11/28
Y1 - 2018/11/28
N2 - The effect of differently oriented magnetic field on chiral incommensurate helimagnet UPtGe is studied both experimentally and theoretically. The magnetization measurements up to the field above the saturation have revealed an isotropic magnetic response below 20 T and a remarkable nonmonotonic anisotropy in high fields. Moreover, the two principally different phase transitions from the noncollinear incommensurate to the field-induced ferromagnetic state have been observed. These properties are successfully explained by density-functional theory calculations taking into account the noncollinearity of the magnetic structures, arbitrary directed magnetic field, and relativistic effects. We also estimate the strength of different competing magnetic interactions and discuss possible scenarios of the field-induced phase transformations.
AB - The effect of differently oriented magnetic field on chiral incommensurate helimagnet UPtGe is studied both experimentally and theoretically. The magnetization measurements up to the field above the saturation have revealed an isotropic magnetic response below 20 T and a remarkable nonmonotonic anisotropy in high fields. Moreover, the two principally different phase transitions from the noncollinear incommensurate to the field-induced ferromagnetic state have been observed. These properties are successfully explained by density-functional theory calculations taking into account the noncollinearity of the magnetic structures, arbitrary directed magnetic field, and relativistic effects. We also estimate the strength of different competing magnetic interactions and discuss possible scenarios of the field-induced phase transformations.
UR - http://www.scopus.com/inward/record.url?scp=85057369013&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85057369013&partnerID=8YFLogxK
U2 - 10.1103/PhysRevB.98.174436
DO - 10.1103/PhysRevB.98.174436
M3 - Article
AN - SCOPUS:85057369013
SN - 2469-9950
VL - 98
JO - Physical Review B
JF - Physical Review B
IS - 17
M1 - 174436
ER -