N2RC, Osaka Prefecture University, 1-2 Gakuencho, Sakai, Osaka 599-8570, Japan.
Phys Rev Lett. 2012 Mar 9;108(10):107202. doi: 10.1103/PhysRevLett.108.107202. Epub 2012 Mar 5.
Using Lorenz microscopy and small-angle electron diffraction, we directly present that the chiral magnetic soliton lattice (CSL) continuously evolves from a chiral helimagnetic structure in small magnetic fields in Cr(1/3)NbS2. An incommensurate CSL undergoes a phase transition to a commensurate ferromagnetic state at the critical field strength. The period of a CSL, which exerts an effective potential for itinerant spins, is tuned by simply changing the field strength. Chiral magnetic orders observed do not exhibit any structural dislocation, indicating their high stability and robustness in Cr(1/3)NbS2.
利用洛伦兹显微镜和小角电子衍射，我们直接展示了在 Cr(1/3)NbS2 中，手磁单畴晶格（CSL）在手性螺旋磁结构在小磁场中连续演化。一个非共格的 CSL 在临界场强下经历了从一个相到一个共格铁磁态的相变。CSL 的周期对手征自旋施加有效的势能，通过简单地改变磁场强度就可以进行调节。在 Cr(1/3)NbS2 中观察到的手磁有序没有表现出任何结构位错，这表明它们具有很高的稳定性和鲁棒性。
