Stochastic dipolar recoupling in nuclear magnetic resonance of solids.
Stochastic dipolar recoupling in nuclear magnetic resonance of solids.
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DOI：
10.1103/physrevlett.99.187601
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发表时间：
2007-11
影响因子：
8.6
通讯作者：
R. Tycko
中科院分区：
文献类型：
--
作者：
R. Tycko
我描述了一种核磁共振（NMR）技术，称为随机偶极再耦合（SDR），允许连续实验控制的性质之间的自旋动力学的磁偶极耦合核系统的相干和非相干限制。在SDR的完全非相干限制下，自旋极化转移发生在距离依赖的速率下，而没有成对偶极-偶极耦合之间的量子力学干扰，这通常限制了通过NMR进行固体结构研究的可行性或精度。除了促进结构研究，SDR代表了一个可能的途径，实验研究的影响退相干量子多体系统的动力学。
I describe a nuclear magnetic resonance (NMR) technique, called stochastic dipolar recoupling (SDR), that permits continuous experimental control of the character of spin dynamics between coherent and incoherent limits in a system of magnetic dipole-coupled nuclei. In the fully incoherent limit of SDR, spin polarization transfers occur at distance-dependent rates without the quantum mechanical interferences among pairwise dipole-dipole couplings that often limit the feasibility or precision of structural studies of solids by NMR. In addition to facilitating structural studies, SDR represents a possible route to experimental studies of effects of decoherence on the dynamics of quantum many-body systems.