9 research outputs found

    Combination of Ferromagnetic and Antiferromagnetic Features in Heisenberg Ferrimagnets

    Full text link
    We investigate the thermodynamic properties of Heisenberg ferrimagnetic mixed-spin chains both numerically and analytically with particular emphasis on the combination of ferromagnetic and antiferromagnetic features. Employing a new density-matrix renormalization-group technique as well as a quantum Monte Carlo method, we reveal the overall thermal behavior: At very low temperatures, the specific heat and the magnetic susceptibility times temperature behave like T1/2T^{1/2} and T−1T^{-1}, respectively, whereas at intermediate temperatures, they exhibit a Schottky-like peak and a minimum, respectively. Developing the modified spin-wave theory, we complement the numerical findings and give a precise estimate of the low-temperature behavior.Comment: 9 pages, 9 postscript figures, RevTe

    Vinyl Epoxides in Organic Synthesis

    No full text

    Letter of Intent by the Solenoidal Detector Collaboration to construct and operate a detector at the Superconducting Super Collider

    No full text

    Listing of Protein Spectra

    No full text
    corecore