中文摘要：

研究了与磁场强度相关的手性丙氨酸晶体的电子轨道运动的磁性质．根据丙氨酸单晶的两性离子（’NHs—C（CHs）H—COi）模型的手性和蛋白质中肽键晶格结构的螺旋性，当外加磁场为5一磁场方向平行于丙氨酸晶轴c（z）的极性N^＋H…O^-氢键，观察到D一丙氨酸晶格中，氢原子的电子自旋翻转，在297．6K直接突现顺磁性-L-丙氨酸则先发生电子自旋转向，然后在303．9K突现顺磁性．实验发现：外加强磁场可以分裂手性丙氨酸晶格中氢键的简并顺磁态，并测出能差．本文进一步证明了准一维极性N^＋H…O^-氢键在晶格中可以发生白旋．轨道分离。表现出一维物理的基本特征．

英文摘要：

We investigated the field-dependent magnetic properties of chiral alanine crystals, especially associated with the electronic orbital motions. Based on the chirality of the zwitterionic model （^＋NH3- C（CH3）H-CO2-） and the helicity of the lattice structure of peptide bond in proteins, when an external field of 5 T was applied parallel to the preferred axis c（z） of the N＋H...O- hydrogen bond in D-alanine, the electron spin-flip manifested emergent paramagnetism at 297.6 K. Because the spin magnetic dipole moment of hydrogen in L-alanine was originally aligned antiparallel to the field, the electron spins flipped firstly perpendicular to the field then manifested paramagnetism at 303.9 K. The magnetic field of 5 T split a degenerate energy level in the paramagnetic state of chiral alanine. Furthermore, the spin-orbital separation of the quasi-one dimensional N^＋H…O^- hydrogen bond in the crystal lattice provided evidence for the hallmark of one-dimensional physics.