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24 papers · 1 filter
Antiferromagnetism of Ni2NbBO6 with S = 1 dimer quasi-one-dimensional armchair chains
G. Narsinga Rao, Viveka Nand Singh, R. Sankar +3
Long range antiferromagnetic (AFM) ordering of Ni spins in Ni2NbBO6 has been studied with single crystal from spin susceptibility measurement and comparedwith the ab initio calcula…
Characterizing the Haldane phase in quasi-one-dimensional spin-1 Heisenberg antiferromagnets
Keola Wierschem, Pinaki Sengupta
We review the basic properties of the Haldane phase in spin-1 Heisenberg antiferromagnetic chains, including its persistence in quasi-one-dimensional geometries. Using large-scale…
The effective electron mass in high-mobility SiGe/Si/SiGe quantum wells
M. Yu. Melnikov, A. A. Shashkin, V. T. Dolgopolov +3
The effective mass, m*, of the electrons confined in high-mobility SiGe/Si/SiGe quantum wells has been measured by the analysis of the temperature dependence of the Shubnikov-de Ha…
Spin liquid behaviour in Jeff=1/2 triangular lattice Ba3IrTi2O9
Tusharkanti Dey, A. V. Mahajan, P. Khuntia +3
Ba3IrTi2O9 crystallizes in a hexagonal structure consisting of a layered triangular arrangement of Ir4+ (Jeff=1/2). Magnetic susceptibility and heat capacity data show no magnetic…
Accurate computation of low-temperature thermodynamics for quantum spin chains
Yu-Kun Huang, Pochung Chen, Ying-Jer Kao
We apply the biorthonormal transfer-matrix renormalization group (BTMRG) [Phys. Rev. E 83, 036702 (2011)] to study low-temperature properties of quantum spin chains. Simulation on…
Magnetic correlations in spin ice Ho2-xYxTi2O7 as revealed by neutron polarization analysis
L. J. Chang, Y. Su, Y. -J. Kao +6
We present single-crystal neutron-diffuse-scattering measurements with polarization analysis on the spin ice Ho2-xYxTi2O7 (x = 0, 0.3, and 1). At 2 K, the spin flip scattering patt…