全开放式单边核磁共振(nuclear magnetic resonance,NMR)系统具有成本低、易便携、可实时无损检测等特点.该文介绍了单边NMR探测器的发展,重点以德国亚琛工业大学Blumich教授团队研发的NMR-MOUSE(NMR mobile universal surface explorer...全开放式单边核磁共振(nuclear magnetic resonance,NMR)系统具有成本低、易便携、可实时无损检测等特点.该文介绍了单边NMR探测器的发展,重点以德国亚琛工业大学Blumich教授团队研发的NMR-MOUSE(NMR mobile universal surface explorer)探测器为例,详细讨论了其硬件结构,探讨了单边NMR的测量方法,最后介绍了单边NMR探测器在波谱分析和生物医学等领域中的应用.展开更多
The extrinsic mechanism for anomalous Hall effect in ferromagnets is extended to include the contributions both from spin-orbit-dependent impurity scattering and from the spin-orbit coupling induced by external electr...The extrinsic mechanism for anomalous Hall effect in ferromagnets is extended to include the contributions both from spin-orbit-dependent impurity scattering and from the spin-orbit coupling induced by external electric fields. The results obtained suggest that, within the framework of the extrinsic mechanisms, the anomalous Hall current in a ferromagnet may also contain a substantial amount of dissipationless contribution independent of impurity scattering. After the contribution from the spin-orbit coupling induced by external electric fields is included, the total anomalous Hall conductivity is about two times larger than that due to soin-orbit dependent impurity scatterings.展开更多
文摘全开放式单边核磁共振(nuclear magnetic resonance,NMR)系统具有成本低、易便携、可实时无损检测等特点.该文介绍了单边NMR探测器的发展,重点以德国亚琛工业大学Blumich教授团队研发的NMR-MOUSE(NMR mobile universal surface explorer)探测器为例,详细讨论了其硬件结构,探讨了单边NMR的测量方法,最后介绍了单边NMR探测器在波谱分析和生物医学等领域中的应用.
基金Supported by the National Natural Science Foundation of China under Grant No.10874049the State Key Program for Basic Research of China under Grant No.2007CB925204the Natural Science Foundation of Guangdong Province under Grant No.07005834
文摘The extrinsic mechanism for anomalous Hall effect in ferromagnets is extended to include the contributions both from spin-orbit-dependent impurity scattering and from the spin-orbit coupling induced by external electric fields. The results obtained suggest that, within the framework of the extrinsic mechanisms, the anomalous Hall current in a ferromagnet may also contain a substantial amount of dissipationless contribution independent of impurity scattering. After the contribution from the spin-orbit coupling induced by external electric fields is included, the total anomalous Hall conductivity is about two times larger than that due to soin-orbit dependent impurity scatterings.