8 papers · 1 filter
Quantum paramagnetic states in the spin-1/2 distorted honeycomb-lattice Heisenberg antiferromagnet -- application to Cu(pymca)(ClO)
Tokuro Shimokawa, Ken'ichi Takano, Zentaro Honda +2
We investigate the ground-state phase diagram of a spin-1/2 honeycomb-lattice antiferromagnetic (AF) Heisenberg model with three exchange interactions, , , an…
High-field Magnetism of the Honeycomb-lattice Antiferromagnet Cu(pymca)(ClO)
Akira Okutani, Takanori Kida, Yasuo Narumi +6
We report on the experimental results of magnetic susceptibility, specific heat, electron spin resonance (ESR), and high-field magnetization measurements on a polycrystalline sampl…
Heterobimetallic Dy-Cu coordination compound as a classical-quantum ferrimagnetic chain of regularly alternating Ising and Heisenberg spins
J. Torrico, J. Strecka, M. Hagiwara +5
A classical-quantum chain composed of regularly alternating Ising and Heisenberg spins is rigorously solved by considering two distinct local anisotropy axes of the Ising spins. Th…
What drives the charge/orbital ordering in La0.5Sr1.5MnO4: Jahn-Teller distortion versus orbital ordering
U. Staub, V. Scagnoli, A. M. Mulders +3
Temperature dependences of a magnetic and an orbital Bragg reflection at the Mn L2 and L3 edges of La0.5Sr1.5MnO4 have been collected. The temperature evolution of the orbital refl…
High-field phase diagram of the Haldane-gap antiferromagnet
H. Tsujii, Z. Honda, B. Andraka +2
We have determined the magnetic phase diagram of the quasi-one-dimensional 1 Heisenberg antiferromagnet by specific heat measurements to 150…
Observation of a Transient Magnetization Plateau in a Quantum Antiferromagnet on the Kagome Lattice
Y. Narumi, K. Katsumata, Z. Honda +6
The magnetization process of an S=1/2 antiferromagnet on the kagome lattice, [Cu_3(titmb)_2(OCOCH_3)_6]H_2O {titmb= 1,3,5-tris(imidazol-1-ylmethyl)-2,4,6 trimethylbenzene} has been…