Journal
PHYSICAL REVIEW B
Volume 83, Issue 6, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.83.064405
Keywords
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Funding
- MEXT, Japan [21740277, 21740295, 22014016]
- Grants-in-Aid for Scientific Research [21740277, 21740295, 22014016] Funding Source: KAKEN
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It is generally difficult experimentally to distinguish magnetic multipolar orders in spin systems. Recently, it was proposed that the temperature dependence of the nuclear magnetic resonance relaxation rate 1/T-1 can involve an indirect but clear signature of the field-induced spin nematic or multipolar Tomonaga-Luttinger (TL) liquid phase [Phys. Rev. B 79, 060406(R) (2009)]. In this paper, we evaluate accurately the field and temperature dependence of 1/T-1 in spin-1/2 frustrated J(1)-J(2) chains combining field-theoretical techniques with numerical data. Our results demonstrate that isotherms of 1/T-1 as a function of magnetic field also exhibit distinctive nonmonotonic behavior in spin nematic TL liquid, in contrast with the standard TL liquid in the spin-1/2 Heisenberg chain. The relevance of our results to quasi-one-dimensional edge-sharing cuprate magnets, such as LiCuVO4, is discussed.
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