TY - JOUR
T1 - Comprehensive magnetic phase diagrams of the polar metal C a3(R u0.95 F e0.05)2 O7
AU - Lei, Shiming
AU - Chikara, Shalinee
AU - Puggioni, Danilo
AU - Peng, Jin
AU - Zhu, Mengze
AU - Gu, Mingqiang
AU - Zhao, Weiwei
AU - Wang, Yu
AU - Yuan, Yakun
AU - Akamatsu, Hirofumi
AU - Chan, Moses H.W.
AU - Ke, Xianglin
AU - Mao, Zhiqiang
AU - Rondinelli, James M.
AU - Jaime, Marcelo
AU - Singleton, John
AU - Weickert, Franziska
AU - Zapf, Vivien S.
AU - Gopalan, Venkatraman
N1 - Funding Information:
S.L., V.G., W.Z., and M.H.W.C. were supported by the Pennsylvania State University National Science Foundation-Materials Research Science and Engineering Center (NSF MRSEC Center) for Nanoscale Science, under Award No. DMR-1420620. Y.Y. and V.G. were supported by U.S. Department of Energy (DOE) under Grant No. DE-SC0012375. The National High Magnetic Field Laboratory is supported by the National Science Foundation (NSF) under cooperative Grants No. DMR-1157490 and No. DMR-1644779, the U.S. DOE, and the State of Florida. V.Z. and S.C. were supported by the Laboratory-Directed Research and Development program at Los Alamos National Laboratory (LANL). J.S. is supported by the DOE BES program Science in 100 T. J.P., Y.W. and Z.M. were supported by the U.S. DOE under EPSCoR Grant No. DE-SC0012432 with additional support from the Louisiana Board of Regents. M.Z. and X.K. were supported by the NSF under Award No. DMR-1608752 and the start-up funds from Michigan State University. D.P. and J.M.R. were supported by the Army Research Office under Award No. W911NF-15-1-0017. M.G. was supported by the U.S. DOE under Grant No. DE-SC0012375.
Publisher Copyright:
© 2019 American Physical Society.
PY - 2019/6/10
Y1 - 2019/6/10
N2 - Polar metals exist as a rather unique class of materials as they combine two seemingly mutually exclusive properties (polar order and metallicity) in one system. So far only a few polar metals have been unambiguously identified; the magnetic ones are exceptionally rare. Here we investigate a 5% Fe-doped polar metal Ca3Ru2O7, via electrical transport, magnetization, microstrain, and optical second-harmonic generation measurements. We report the full magnetic phase diagrams (in the field-temperature space) for magnetic field Ha and Hb, which exhibit distinct field-dependent magnetizations behavior. In particular, for Ha we found a ferromagnetic incommensurate spin structure, which is absent in the pure Ca3Ru2O7. We propose a microscopic spin model to understand this behavior, highlighting the role of Fe doping in tipping the delicate balance of the underlying exchange-interaction energy in this system.
AB - Polar metals exist as a rather unique class of materials as they combine two seemingly mutually exclusive properties (polar order and metallicity) in one system. So far only a few polar metals have been unambiguously identified; the magnetic ones are exceptionally rare. Here we investigate a 5% Fe-doped polar metal Ca3Ru2O7, via electrical transport, magnetization, microstrain, and optical second-harmonic generation measurements. We report the full magnetic phase diagrams (in the field-temperature space) for magnetic field Ha and Hb, which exhibit distinct field-dependent magnetizations behavior. In particular, for Ha we found a ferromagnetic incommensurate spin structure, which is absent in the pure Ca3Ru2O7. We propose a microscopic spin model to understand this behavior, highlighting the role of Fe doping in tipping the delicate balance of the underlying exchange-interaction energy in this system.
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U2 - 10.1103/PhysRevB.99.224411
DO - 10.1103/PhysRevB.99.224411
M3 - Article
AN - SCOPUS:85067176574
VL - 99
JO - Physical Review B
JF - Physical Review B
SN - 2469-9950
IS - 22
M1 - 224411
ER -