Dynamical lattice instability versus spin liquid state in a frustrated spin chain system

Metallic spin-liquid behavior of the geometrically frustrated Kondo lattice.

Strongly frustrated magnetism of the metallic pyrochlore oxide Pr2Ir2O7 has been revealed by single crystal study. While Pr 4f moments have an antiferromagnetic RKKY interaction energy scale of /T*/ = 20 K mediated by Ir 5d-conduction electrons, no magnetic long-range order is found except for partial spin freezing at 120 mK. Instead, the Kondo effect, including a lnT dependence in the resistiv...

Classical Spin Liquid on the Maximally Frustrated Honeycomb Lattice.

We show that the honeycomb Heisenberg antiferromagnet with J_{1}/2=J_{2}=J_{3}, where J_{1}, J_{2}, and J_{3} are first-, second-, and third-neighbor couplings, respectively, forms a classical spin liquid with pinch-point singularities in the structure factor at the Brillouin zone corners. Upon dilution with nonmagnetic ions, fractionalized degrees of freedom carrying 1/3 of the free moment eme...

Spin liquid versus long range magnetic order in the frustrated body-centered tetragonal lattice

Supercooled spin liquid state in the frustrated pyrochlore Dy2Ti2O7.

A "supercooled" liquid develops when a fluid does not crystallize upon cooling below its ordering temperature. Instead, the microscopic relaxation times diverge so rapidly that, upon further cooling, equilibration eventually becomes impossible and glass formation occurs. Classic supercooled liquids exhibit specific identifiers including microscopic relaxation times diverging on a Vogel-Tammann-...

Dynamical spin correlation function in a frustrated two - leg spin - ladder system

Submitted for the MAR13 Meeting of The American Physical Society Dynamical spin correlation function in a frustrated two-leg spinladder system TAKANORI SUGIMOTO, MICHIYASU MORI, ASRC, Japan Atomic Energy Agency; CREST, Japan Science and Technology Agency, TAKAMI TOHYAMA, YITP, Kyoto University, SADAMICHI MAEKAWA, ASRC, Japan Atomic Energy Agency; CREST, Japan Science and Technology Agency — We ...