TY - JOUR

T1 - Experimental phase diagra

T2 - A quasi-one-dimensional antiferromagnetic spin- Heisenberg ladder

AU - Chaboussant, G.

AU - Crowell, P.

AU - Lévy, L.

PY - 1997

Y1 - 1997

N2 - Using magnetization, susceptibility, and spin resonance techniques, three distinct magnetic phases of (Formula presented)((Formula presented)(Formula presented)(Formula presented)(Formula presented)(Formula presented), a spin- ladder, are identified at zero temperature. For magnetic fields below (Formula presented)=7.5 T, the one-dimensional ground state is a valence-bond ordered singlet separated from a triplet band by an energy gap (Formula presented)/(Formula presented)≈g(Formula presented)(Formula presented)/(Formula presented)=10.8 K. For (Formula presented)<H<(Formula presented)=13.2 T, the ground state is probably an antiferromagnetic canted or incommensurate state, and above (Formula presented) the ground state is ferromagnetic. The exchange parameters used to parametrize the magnetic Hamiltonian are determined.

AB - Using magnetization, susceptibility, and spin resonance techniques, three distinct magnetic phases of (Formula presented)((Formula presented)(Formula presented)(Formula presented)(Formula presented)(Formula presented), a spin- ladder, are identified at zero temperature. For magnetic fields below (Formula presented)=7.5 T, the one-dimensional ground state is a valence-bond ordered singlet separated from a triplet band by an energy gap (Formula presented)/(Formula presented)≈g(Formula presented)(Formula presented)/(Formula presented)=10.8 K. For (Formula presented)<H<(Formula presented)=13.2 T, the ground state is probably an antiferromagnetic canted or incommensurate state, and above (Formula presented) the ground state is ferromagnetic. The exchange parameters used to parametrize the magnetic Hamiltonian are determined.

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U2 - 10.1103/PhysRevB.55.3046

DO - 10.1103/PhysRevB.55.3046

M3 - Article

AN - SCOPUS:0000404208

VL - 55

SP - 3046

EP - 3049

JO - Physical Review B - Condensed Matter and Materials Physics

JF - Physical Review B - Condensed Matter and Materials Physics

SN - 1098-0121

IS - 5

ER -