Spin-Lattice Relaxation Rate and Optical Conductivity of Quantum Spin Liquid

2020 ◽  
pp. 173-178
Author(s):  
Miron Amusia ◽  
Vasily Shaginyan
Keyword(s):  
Relaxation Rate ◽  
Optical Conductivity ◽  
Lattice Relaxation ◽  
Quantum Spin ◽  
Spin Lattice Relaxation ◽  
Spin Liquid ◽  
Spin Lattice Relaxation Rate ◽  
Spin Lattice ◽  
Lattice Relaxation Rate ◽  
Quantum Spin Liquid

7Li NMR studies in magnetically frustrated LiV2O4: Evidence for a spin-liquid ground state?

2001 ◽  
Vol 79 (11-12) ◽  
pp. 1487-1493 ◽  
Author(s):  
N Büttgen ◽  
H Kaps ◽  
W Trinkl ◽  
A Loidl ◽  
M Klemm ◽  
...  
Keyword(s):  
Relaxation Rate ◽  
Lattice Relaxation ◽  
Spin Fluctuations ◽  
Spin Lattice Relaxation ◽  
Spin Liquid ◽  
Nmr Studies ◽  
Spin Lattice Relaxation Rate ◽  
Spin Lattice ◽  
Spin Glass Behavior ◽  
Lattice Relaxation Rate

7Li NMR measurements were performed in the metallic spinel LiV2O4. The temperature dependence of the spin-lattice relaxation rate is documented in the temperature range 100 mK < T < 280 K. A comparison with the spin-glass behavior of Li1–xZnxV2O4 for small concentrations of x is given. For low temperatures T < 1 K we observe a maximum for the spin-lattice relaxation rate in LiV2O4. The frequency dependence of this maximum is indicative for a slowing down of spin fluctuations. The NMR results can be explained by a spin-liquid behavior and the opening of a spin gap of the order 1 K. PACS Nos.: 75.20Hr, 75.50Lk, 76.60Es, 76.60-k

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