Magnetic phase transition in the S= zigzag-chain compoundSrCuO2

Heat transport by lattice and spin excitations in the spin-chain compoundsSrCuO2andSr2Sologubenko1, Giannò2, Ott3 et al. 2001Phys. Rev. B211242555View full textAdd to dashboardCite

“…At room temperature, this excess conductivity for the double-chain material SrCuO 2 exceeds that for the single-chain compound Sr 2 CuO 3 by almost a factor of two. In the temperature region between 1 and 6 K, where magnetic phase transitions have been reported for both materials, [35][36][37][38] no anomalous features in κ(T ) have been observed. Since these transitions are indicated by anomalies of the magnetic specific heat, 33,37 the interaction between the spin and the lattice systems as well as the spin contribution to the measured thermal conductivity must be negligible in this temperature region for both materials.…”

Anisotropic superexchange for nearest and next-nearest coppers in chain, ladder, and lamellar cuprates

“…2 Corner-sharing configurations characterize the copper oxide planes in the parent compounds of the high-T c cuprates, and the chains in Sr 2 CuO 3 3 and SrCuO 2 . 4 Some compounds include both types of bonds, for example Sr 2 Cu 3 O 4 Cl 2 . 5 The various Cu-Cu bond geometries in this material are the same as those for the nearest-neighbors and next-nearestneighbors (NNN) in the chains in Sr 14 Cu 24 O 41 6 and the interladder bonds in Sr n−1 Cu n+1 O 2n .…”

Magnetization jump in theXXZchain with next-nearest-neighbor exchange

“…Quasi one-dimensional magnetic systems have been identified and studied experimentally [1][2][3][4], and new theoretical studies of the spin-1/2 XXZ chain with nearest-neighbor (NN) and next-NN exchange coupling (which is equivalent to a two-leg zig-zag ladder) were presented [4][5][6][7][8][9][10][11][12][13][14] (1)…”