Science. 1993 Oct 1;262(5130):83-6. doi: 10.1126/science.262.5130.83.
A detailed small-angle neutron scattering study of the vortex lattice in a single crystal of YBa(2)Cu(3)O(7) was made for a field of 0.5 tesla inclined at angles between 0 and 80 degrees to the crystalline c axis. The vortex lattice is triangular for all angles, and for angles less than or equal to 70 degrees its orientation adjusts itself to maximize the pinning energy to densely and highly regularly spaced twin planes. These observations have important implications for the microscopic flux-pinning mechanism, and hence for the critical current achievable in YBa(2)Cu(3)O(7). For large angles (about 80 degrees) the vortex lattice consists of independent chains in the orientation predicted by anisotropic London theory.
对单晶体 YBa(2)Cu(3)O(7)中的涡旋晶格进行了详细的小角中子散射研究，磁场强度为 0.5 特斯拉，相对于晶体 c 轴的倾斜角度在 0 到 80 度之间。对于所有角度，涡旋晶格都是三角形的，对于小于或等于 70 度的角度，其方向会自行调整，以最大限度地增加对密集且高度规则间隔的孪晶面的钉扎能量。这些观察结果对微观磁通钉扎机制有重要意义，因此对 YBa(2)Cu(3)O(7)中可达到的临界电流有重要意义。对于较大的角度（约 80 度），涡旋晶格由各向异性伦敦理论预测的取向的独立链组成。
