X. N. Lin

TL;DR: In this paper, the authors report results of a magnetic and transport study of an antiferromagnetic system with Mn doping and show that the Mn doping drives the system from the itinerant ferromagnetic state through a quantum critical point at 0.39$.

TL;DR: The triple-layered triple-layer magnetic field is characterized by an unexpectedly strong quasi-two dimensional characteristic, and a sharp metamagnetic transition and ferromagnetic behavior occurring within the basal plane and along the c axis, respectively as mentioned in this paper.

Abstract: We report results of a magnetic and transport study of ${\mathrm{SrRu}}_{1\ensuremath{-}x}{\mathrm{Mn}}_{x}{\mathrm{O}}_{3}\phantom{\rule{0.3em}{0ex}}(0\ensuremath{\leqslant}xl0.60)$, i.e., Mn doped ${\mathrm{SrRuO}}_{3}$. The Mn doping drives the system from the itinerant ferromagnetic state (${T}_{\mathrm{C}}=165\phantom{\rule{0.3em}{0ex}}\mathrm{K}$ for $x=0$) through a quantum critical point at ${x}_{\mathrm{c}}=0.39$ to an insulating antiferromagnetic state. The onset of antiferromagnetism is abrupt with a N\'eel temperature increasing from 205 K for $x=0.44$ to 250 K for $x=0.59$. Accompanying this quantum phase transition is a drastic change in resistivity by as much as eight orders of magnitude as a function of $x$ at low temperatures. The critical composition ${x}_{\mathrm{c}}=0.39$ sharply separates the two distinct ground states, namely the ferromagnetic metal from the antiferromagnetic insulator.

TL;DR: Transport and magnetic studies of Ca3Ru2O7 for temperatures ranging from 0.4 to 56 K and magnetic fields B up to 45 T lead to strikingly different behavior when the field is applied along the different crystal axes, where the FM phase is the least favorable for electron hopping.

TL;DR: In this paper, it was shown that dilute Sr doping drastically suppresses the electron-lattice coupling and leads to a nonmetal-metal transition at high temperatures, and that the magnetic and transport properties can effectively be tuned by slight alterations in lattice parameters.