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The pairwise entanglement is exactly examined in the spin-1/2Ising-Heisenberg double-tetrahedral chain with different Land\'e g-factors ofthe Ising and Heisenberg spins at zero and finite temperatures. It is shownthat the phenomenon present in quantum non-chiral ground states is twice asstrong as in quantum chiral ground states and that it gradually diminishes withincreasing temperature until it completely vanishes at a certain thresholdtemperature. It is also demonstrated that the strong magnetic field maintains aweak thermal entanglement quite far from the saturation field, although theground state is non-entangled.

Pairwise entanglement in double-tetrahedral chain with different Land\'e g-factors of the Ising and Heisenberg spins