通过极化中子散射确定的三角晶格反铁磁体CsMnBr₃的手性临界指数。
Chiral critical exponents of the triangular-lattice antiferromagnet CsMnBr3 as determined by polarized neutron scattering.
作者信息
Plakhty VP, Kulda J, Visser D, Moskvin EV, Wosnitza J
机构信息
Petersburg Nuclear Physics Institute RAS, Gatchina, St. Petersburg, 188350 Russia.
出版信息
Phys Rev Lett. 2000 Oct 30;85(18):3942-5. doi: 10.1103/PhysRevLett.85.3942.
The critical exponents gamma(c) = 0.84(7) of the chiral susceptibility above the Neel temperature, T(N), and beta(c) = 0. 44(2) of the average chirality below T(N) have been determined for the triangular-lattice antiferromagnet CsMnBr3 by means of polarized neutron scattering. These first experimental values of chiral critical exponents are in line with theoretical predictions and fulfill their scaling relation. The temperature at which the average chirality appears coincides with the spin-order transition temperature, T(N).
通过极化中子散射，已确定了三角晶格反铁磁体CsMnBr₃在尼尔温度T(N)以上的手征磁化率的临界指数γ(c)=0.84(7)以及在T(N)以下的平均手征性的临界指数β(c)=0.44(2)。这些手征临界指数的首批实验值与理论预测相符，并满足其标度关系。平均手征性出现时的温度与自旋有序转变温度T(N)一致。
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