Chapter 23: Singlet Order in Heteronuclear Spin Systems

Alexey S. Kiryutin, Ivan V. Zhukov, Alexandra V. Yurkovskaya, Dmitry Budker, Konstantin L. Ivanov

Research output: Chapter in Book/Report/Conference proceedingChapterResearchpeer-review


The concept of heteronuclear Long-Lived spin States (LLSs) is introduced. In the simplest case of a pair of heteronuclei, such states are given by the singlet order of the spin pair, which can be efficiently sustained under Zero or Ultra-Low Field (ZULF) conditions. Here we describe two possible ways of detecting long-lived singlet order of heteronuclei: detection at ZULF conditions and NMR (Nuclear Magnetic Resonance) detection at high field utilising fast field-cycling. A theoretical description of the underlying spin dynamics is presented for both cases; the discussion is supported by experimental examples of LLSs in 13CH groups. The generality of these phenomena is discussed, as well as their potential applications.

Original languageEnglish
Title of host publicationIn-cell NMR Spectroscopy
Subtitle of host publicationFrom Molecular Sciences to Cell Biology
EditorsGiuseppe Pileio
PublisherRoyal Society of Chemistry
Number of pages16
Publication statusPublished - 2020

Publication series

NameNew Developments in NMR
ISSN (Print)2044-253X
ISSN (Electronic)2044-2548

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