论文标题
巡回Ferromagnet ni $ _ {1-x} $ rh $ _x $中的量子关键点
Quantum critical point in the itinerant ferromagnet Ni$_{1-x}$Rh$_x$
论文作者
论文摘要
我们报告了一个化学替代诱导的铁磁量子量子的关键点，polycrystalline ni $ _ {1-x} $ rh $ _x $合金。通过磁化和MUON自旋松弛测量值，我们表明，在$ x_ {crit} = 0.375 $时，铁磁体排序温度连续抑制至零，而磁性量分数则保持100％至$ x_ {crit} $，指向第二阶转换。 Non-Fermi liquid behavior is observed close to $x_{crit}$, where the electronic specific heat $C_{el}/T$ diverges logarithmically, while immediately above $x_{crit}$ the volume thermal expansion coefficient $α_{V}/T$ and the Grüneisen ratio $Γ= α_{V}/C_{el}$ both diverge对数在低温限制中，进一步指示Ni $ _ {1-X} $ RH $ _X $中的铁磁量子关键点。
We report a chemical substitution-induced ferromagnetic quantum critical point in polycrystalline Ni$_{1-x}$Rh$_x$ alloys. Through magnetization and muon spin relaxation measurements, we show that the ferromagnetic ordering temperature is suppressed continuously to zero at $x_{crit} = 0.375$ while the magnetic volume fraction remains 100% up to $x_{crit}$, pointing to a second order transition. Non-Fermi liquid behavior is observed close to $x_{crit}$, where the electronic specific heat $C_{el}/T$ diverges logarithmically, while immediately above $x_{crit}$ the volume thermal expansion coefficient $α_{V}/T$ and the Grüneisen ratio $Γ= α_{V}/C_{el}$ both diverge logarithmically in the low temperature limit, further indication of a ferromagnetic quantum critical point in Ni$_{1-x}$Rh$_x$.
