论文标题
在过渡金属二胺晶体的厘米上，手性选择的晶体生长和自旋极化
Chirality-selected crystal growth and spin polarization over centimeters of transition metal disilicide crystals
论文作者
论文摘要
我们通过使用激光二二极管加热的浮动区（LDFZ）方法进行了过渡金属二氧化物NBSI $ _ {2} $和TASI $ _ {2} $的手性控制的晶体生长。通过执行单晶X射线衍射以及探测源自手性诱导的自旋选择性（CISS）效应的自旋极化，在厘米长的晶体中评估了晶体手性。右手nbsi $ _ {2} $的晶体和左手的tasi $ _ {2} $的晶体是在常规的LDFZ晶体生长中获得的，而左手NBSI $ _ {2} $和右手右手的Tasi $ _ {2} $ crystals用LDFZ Modect fiff fef fef ford ford ford rad rad rad rad rad rad rad rad rad rad rad rad crandient。在NBSI $ _ {2} $单晶中观察到通过CISS的自旋极化，而CISS信号的符号取决于晶体的手性。晶体手性和CISS信号之间的相关性表明，即使在厘米长的标本中，CISS测量值也可以作为手性测定的无损方法。
We performed a chirality-controlled crystal growth of transition metal disilicide NbSi$_{2}$ and TaSi$_{2}$ by using a laser-diode-heated floating zone (LDFZ) method. The crystal chirality was evaluated in the crystals of centimeters in length by performing single crystal X-ray diffraction as well as probing a spin polarization originating from chirality-induced spin selectivity (CISS) effect. The crystals of right-handed NbSi$_{2}$ and of left-handed TaSi$_{2}$ were obtained in the conventional LDFZ crystal growth, while the left-handed NbSi$_{2}$ and right-handed TaSi$_{2}$ crystals were grown by the LDFZ method with the composition-gradient feed rods. The spin polarization via the CISS was observed over centimeters in the NbSi$_{2}$ single crystals and the sign of the CISS signals was dependent on the chirality of crystals. The correlation between the crystal chirality and CISS signals indicates that the CISS measurements work as a non-destructive method for chirality determination even in centimeter-long specimens.
