Tuning the competing phases of bilayer ruthenate C a3 R u2 O7 via dilute Mn impurities and magnetic field

M. Zhu, J. Peng, W. Tian, T. Hong, Z. Q. Mao, X. Ke

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

We have systematically investigated the evolution of the magnetic structure of the bilayer ruthenate Ca3(Ru1-xMnx)2O7 induced upon Mn doping. For 0<x≤0.03, the materials exhibit the same spin structure as that of the parent compound at low temperature, while an incommensurate cycloidal magnetic structure emerges at T slightly above the metal-insulator transition (MIT) temperature (TMIT). In contrast, for x≥0.04 the ground state becomes a G-type antiferromagnetic Mott insulator. Furthermore, we have observed magnetic-field-induced transitions in Ca3(Ru0.96Mn0.04)2O7, which is positioned at the phase boundary. Below TMIT, the magnetic transition is accompanied by a structural transition, as well as a dramatic change in the electronic properties from a Mott insulator to a localized phase. On the contrary, an incommensurate-to-commensurate spin structure transition is observed for TMIT<T<TICM. Our results suggest strong competing magnetic tendencies in this bilayer ruthenate system that are very susceptible to 3d transition-metal substitution and magnetic field.

Original languageEnglish (US)
Article number144426
JournalPhysical Review B
Volume95
Issue number14
DOIs
StatePublished - Apr 21 2017

Fingerprint

Tuning
Magnetic structure
tuning
Impurities
Magnetic fields
impurities
transition temperature
insulators
magnetic fields
Metal insulator transition
Phase boundaries
Electronic properties
Temperature
Ground state
Superconducting transition temperature
Transition metals
Substitution reactions
Doping (additives)
tendencies
transition metals

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Cite this

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Tuning the competing phases of bilayer ruthenate C a3 R u2 O7 via dilute Mn impurities and magnetic field. / Zhu, M.; Peng, J.; Tian, W.; Hong, T.; Mao, Z. Q.; Ke, X.

In: Physical Review B, Vol. 95, No. 14, 144426, 21.04.2017.

Research output: Contribution to journalArticle

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