“…Owing to strong quantum fluctuations, interesting phenomena occur in low-dimensional quantum spin systems . Spin-Peierls (SP) transition − takes place in a system consisting of quantum spin ( S = 1/2) antiferromagnetic (AF) Heisenberg chains through the interchain spin-phonon coupling. In 1974, Pytte revealed that at the SP transition temperature ( T SP ) lattice instability takes place and a system of uniform AF Heisenberg chains in the high-temperature phase is transformed to a system of dimerized or alternating AF chains in the low-temperature phase.…”
“…Owing to strong quantum fluctuations, interesting phenomena occur in low-dimensional quantum spin systems . Spin-Peierls (SP) transition − takes place in a system consisting of quantum spin ( S = 1/2) antiferromagnetic (AF) Heisenberg chains through the interchain spin-phonon coupling. In 1974, Pytte revealed that at the SP transition temperature ( T SP ) lattice instability takes place and a system of uniform AF Heisenberg chains in the high-temperature phase is transformed to a system of dimerized or alternating AF chains in the low-temperature phase.…”
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