TY - JOUR
T1 - Partially disordered state and spin-lattice coupling in an S=32 triangular lattice antiferromagnet Ag 2CrO 2
AU - Matsuda, M.
AU - De La Cruz, C.
AU - Yoshida, H.
AU - Isobe, M.
AU - Fishman, R. S.
PY - 2012/4/11
Y1 - 2012/4/11
N2 - Ag 2CrO 2 is an S=3/2 frustrated triangular lattice antiferromagnet without an orbital degree of freedom. With decreasing temperature, a four-sublattice spin state develops. However, a long-range partially disordered state with five sublattices abruptly appears at T N=24 K, accompanied by a structural distortion, and persists at least down to 2 K. The spin-lattice coupling stabilizes the anomalous state, which is expected to appear only in limited ranges of further-neighbor interactions and temperature. It was found that the spin-lattice coupling is a common feature in triangular lattice antiferromagnets with multiple-sublattice spin states, since the triangular lattice is elastic.
AB - Ag 2CrO 2 is an S=3/2 frustrated triangular lattice antiferromagnet without an orbital degree of freedom. With decreasing temperature, a four-sublattice spin state develops. However, a long-range partially disordered state with five sublattices abruptly appears at T N=24 K, accompanied by a structural distortion, and persists at least down to 2 K. The spin-lattice coupling stabilizes the anomalous state, which is expected to appear only in limited ranges of further-neighbor interactions and temperature. It was found that the spin-lattice coupling is a common feature in triangular lattice antiferromagnets with multiple-sublattice spin states, since the triangular lattice is elastic.
UR - http://www.scopus.com/inward/record.url?scp=84860307882&partnerID=8YFLogxK
U2 - 10.1103/PhysRevB.85.144407
DO - 10.1103/PhysRevB.85.144407
M3 - Article
AN - SCOPUS:84860307882
SN - 1098-0121
VL - 85
JO - Physical Review B - Condensed Matter and Materials Physics
JF - Physical Review B - Condensed Matter and Materials Physics
IS - 14
M1 - 144407
ER -