6533b82cfe1ef96bd128fe8c

RESEARCH PRODUCT

Chapter 23. Singlet Order in Heteronuclear Spin Systems

Alexandra V. YurkovskayaDmitry BudkerDmitry BudkerAlexey S. KiryutinIvan V. ZhukovKonstantin L. Ivanov

subject

PhysicsHeteronuclear moleculeSpin statesField (physics)Spin dynamicsQuantum mechanicsOrder (ring theory)Condensed Matter::Strongly Correlated ElectronsHigh fieldSinglet stateSpin-½

description

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.

https://doi.org/10.1039/9781788019972-00418