论文标题
各向异性引起的磁化强旋转梯子中的孤子激发
Anisotropy-induced soliton excitation in magnetized strong-rung spin ladders
论文作者
论文摘要
我们报告了原型的低温电子自旋共振实验和理论研究，$ s = 1/2 $ strong-rung旋转梯子材料（c $ _ {5} $ h $ _ {12} $ n）$ _ {2} $ _ {2} $ cubr $ _ {4} $。在Tomonaga-Luttinger自旋液体状态下发现了意外的动态。接近系统被半磁化的点（据信等效于零场中的无间隙易于平面链），我们观察到了取决于方向依赖于方向的自旋隙和异常的$ g $ factor值。现场理论分析表明，在磁化中观察到的低能激发模式（C $ _ {5} $ h $ _ {12} $ n）$ _ {2} $ _ {2} $ cubr $ _ {4} $是由dzyaloshinskii-moriya互动所引起的词素激发。
We report low temperature electron spin resonance experimental and theoretical studies of an archetype $S=1/2$ strong-rung spin ladder material (C$_{5}$H$_{12}$N)$_{2}$CuBr$_{4}$. Unexpected dynamics is detected deep in the Tomonaga-Luttinger spin liquid regime. Close to the point where the system is half-magnetized (and believed to be equivalent to a gapless easy plane chain in zero field) we observed orientation-dependent spin gap and anomalous $g$-factor values. Field theoretical analysis demonstrates that the observed low-energy excitation modes in magnetized (C$_{5}$H$_{12}$N)$_{2}$CuBr$_{4}$ are solitonic excitations caused by Dzyaloshinskii-Moriya interaction presence.
