High Magnetic Field ESR in the Haldane Spin Chains NENP and NINO

Abstract

We present electron spin resonance experiments in the one-dimensional antiferromagnetic S=1 spin chains NENP and NINO in pulsed magnetic fields up to 50T. The measured field dependence of the quantum energy gap for B||b is analyzed using the exact diagonalization method and the density matrix renormalization group method (DMRG). A staggered anisotropy term (-1)^i d(S_i^x S_i^z + S_i^z S_i^x) was considered for the first time in addition to a staggered field term (-1)^i S_i^x B_st. We show that the spin dynamics in high magnetic fields strongly depends on the orthorhombic anisotropy E.

4 pages, RevTeX, 4 figures

References in corpus (2)

• Understanding Far-Infrared Absorption in the S=1 Antiferromagnetic Chain Compound NENP
• Theory of Nuclear Magnetic Relaxation in Haldane Gap Antiferromagnets

Cited by in corpus (13)

• The density-matrix renormalization group
• New Trends in Density Matrix Renormalization
• Tuning the magnetic ground state of a novel tetranuclear Nickel(II) molecular complex by high magnetic fields
• Field-dependent thermal transport in the Haldane chain compound NENP
• Zeeman levels with exotic field dependence in the high field phase of a S=1 Heisenberg antiferromagnetic chain
• Triplet spin resonance of the Haldane compound with interchain coupling
• Susceptibility and Dzyaloshinskii-Moriya interaction in the Haldane gap compound NENP
• Magnetic excitations in the spin-1/2 triangular-lattice antiferromagnet Cs${}_2$CuBr${}_4$
• Spin dynamics of the anisotropic spin-1 antiferromagnetic chain at finite magnetic fields
• Electronic structure and magnetic properties of the strong-rung spin-1 ladder compound Rb${}_3$Ni${}_2$(NO${}_3$)${}_7$
• Low-temperature heat transport of spin-gapped quantum magnets
• Crystal growth and characterization of Haldane chain compound Ni(C${}_3$H${}_{10}$N${}_2$)${}_2$NO${}_2$ClO${}_4$
• Large magnetic heat transport in a Haldane chain material Ni(C$_3H_{10}N_2)_2NO_2ClO_4