TY - JOUR
T1 - Low-temperature ordered phases of the spin- 12 XXZ chain system Cs2 CoCl4
AU - Breunig, O.
AU - Garst, M.
AU - Rosch, A.
AU - Sela, E.
AU - Buldmann, B.
AU - Becker, P.
AU - Bohatý, L.
AU - Müller, R.
AU - Lorenz, T.
N1 - Publisher Copyright:
© 2015 American Physical Society
PY - 2015/1/28
Y1 - 2015/1/28
N2 - In this study the magnetic order of the spin-1/2 XXZ chain system Cs2CoCl4 in a temperature range from 50 mK to 0.5 K and in applied magnetic fields up to 3.5 T is investigated by high-resolution measurements of the thermal expansion and the specific heat. Applying magnetic fields along a or c suppresses TN completely at about 2.1 T. In addition, we find an adjacent intermediate phase before the magnetization saturates close to 2.5 T. For magnetic fields applied along b, a surprisingly rich phase diagram arises. Two additional transitions are observed at critical fields μ0HSF1â‰f0.25T and μ0HSF2â‰f0.7T, which we propose to arise from a two-stage spin-flop transition.
AB - In this study the magnetic order of the spin-1/2 XXZ chain system Cs2CoCl4 in a temperature range from 50 mK to 0.5 K and in applied magnetic fields up to 3.5 T is investigated by high-resolution measurements of the thermal expansion and the specific heat. Applying magnetic fields along a or c suppresses TN completely at about 2.1 T. In addition, we find an adjacent intermediate phase before the magnetization saturates close to 2.5 T. For magnetic fields applied along b, a surprisingly rich phase diagram arises. Two additional transitions are observed at critical fields μ0HSF1â‰f0.25T and μ0HSF2â‰f0.7T, which we propose to arise from a two-stage spin-flop transition.
UR - http://www.scopus.com/inward/record.url?scp=84922253836&partnerID=8YFLogxK
U2 - 10.1103/PhysRevB.91.024423
DO - 10.1103/PhysRevB.91.024423
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AN - SCOPUS:84922253836
SN - 1098-0121
VL - 91
JO - Physical Review B - Condensed Matter and Materials Physics
JF - Physical Review B - Condensed Matter and Materials Physics
IS - 2
M1 - 024423
ER -