Interrelation between Dynamical and Static Spin Gaps in Quantum Spin Systems
1997 年 66 巻 2 号 p. 334-336
詳細
1997 年 66 巻 2 号 p. 334-336
We present an experimental magnetic phase diagram based on two spin-gaps (a dynamical spin gap ΔR estimated from nuclear spin-lattice relaxation rate 1/T1 and a static one ΔS estimated from static uniform spin susceptibility χ s) for low-dimensional quantum spin systems: one-dimensional (1D) Haldane gap, two-leg spin ladder, dimer spin, 2D plaquette spin, and high-Tc Cu oxide systems. Possible universal correlation for respective materials and their mutual relations are discussed.
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