Heat transport of quasi-one-dimensional Ising-like antiferromagnet BaCo_2V_2O_8 in the longitudinal and transverse fields

Abstract

The very-low-temperature thermal conductivity (κ) is studied for BaCo_2V_2O_8, a quasi-one-dimensional Ising-like antiferromagnet exhibiting an unusual magnetic-field-induced order-to-disorder transition. The nearly isotropic transport in the longitudinal field indicates that the magnetic excitations scatter phonons rather than conduct heat. The field dependence of κshows a sudden drop at \sim 4 T, where the system unndergoes the transition from the Néel order to the incommensurate state. Another dip at lower field of \sim 3 T indicates an unknown magnetic transition, which is likely due to the spin-flop transition. Moreover, the κ(H) in the transverse field shows a very deep valley-like feature, which moves slightly to higher field and becomes sharper upon lowering the temperature. This indicates a magnetic transition induced by the transverse field, which however is not predicted by the present theories for this low-dimensional spin system.

5 pages, 4 figures, accepted for publication in Phys. Rev. B

References in corpus (12)

• Bose-Einstein Condensation in Magnetic Insulators
• Heat conduction in low-dimensional quantum magnets
• Thermal conductivity via magnetic excitations in spin-chain materials
• Magnetic phase transitions and magnetoelectric coupling of GdFeO_3 single crystals probed by low-temperature heat transport
• Novel ordering of an S = 1/2 quasi one-dimensional Ising-like anitiferromagnet in magnetic field
• Magnetothermal transport in the spin-1/2 chains of copper pyrazine dinitrate
• A direct measurement of the Bose-Einstein Condensation universality class in NiCl${}_2$-4SC(NH${}_2$)${}_2$ at ultra-low temperatures
• Large magnetothermal conductivity of HoMnO_3 single crystals and its relation to the magnetic-field induced transitions of magnetic structure
• Longitudinal SDW order in a quasi-1D Ising-like quantum antiferromagnet
• Low-Temperature Heat Transport in the Low-Dimensional Quantum Magnet NiCl_{2}-4SC(NH_{2})_{2}
• Field-dependent thermal transport in the Haldane chain compound NENP
• Large magnetothermal conductivity in GdBaCo_{2}O_{5+x} single crystals

Cited by in corpus (10)

• Low-temperature transport properties of intermetallic compound HoAgGe with kagome spin ice state
• An irreversible magnetic-field dependence of low-temperature heat transport of spin-ice compound Dy_2Ti_2O_7 in a [111] field
• Substitution effects on the temperature vs. magnetic-field phase diagrams of the quasi-1D effective Ising spin-1/2 chain system BaCo${}_2$V${}_2$O${}_8$
• Observation of the Thermal Conductivity due to Spins in the One-Dimensional Antiferromagnetic Ising-Like Spin System ACoX3 (A = Rb, Cs; X = Cl, Br)
• Low-temperature heat transport of spin-gapped quantum magnets
• Slow spin dynamics and quantum tunneling of magnetization in the dipolar antiferromagnet DyScO${}_3$
• Magnetically controlled quantum thermal devices via three nearest-neighbor coupled spin-1/2 systems
• Large magnetic heat transport in a Haldane chain material Ni(C$_3H_{10}N_2)_2NO_2ClO_4
• Quasispins of vacancy defects in Ising chains with nearest- and next-to-nearest-neighbour interactions
• Quasispins of vacancy defects and their interactions in disordered antiferromagnets