The Field-Induced Magnetic Ordering Transition in TlCuCl3
نویسندگان
چکیده
منابع مشابه
Specific Heat Study of the Field-Induced Magnetic Ordering in the Spin Gap System TlCuCl3
Specific heat measurements have been performed in the coupled dimer system TlCuCl3, which has a singlet ground state with the excitation gap ∆ ≃ 7.5K. The cusplike anomaly indicative of the 3D magnetic ordering was clearly observed in magnetic fields higher than the critical field Hg corresponding to the gap ∆. The phase boundary determined by the present specific heat measurements coincides wi...
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Abstract TlCuCl3 is a quantum spin liquid of S = 1/2 Cu2+ dimers. Interdimer superexchange interactions give a three-dimensional magnon dispersion and a spin gap significantly smaller than the dimer coupling, which is closed by an applied hydrostatic pressure of approximately 2.5 kbar or by a magnetic field of 5.6 T, offering a unique opportunity to explore both the pressureand fieldinduced qua...
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Heat capacity measurements were used to investigate the magnetic ordering processes in single-crystal samples of SrDy2O4 in a magnetic field applied along the [010] and [001] directions. In zero field this compound appears to be magnetically disordered down to at least 0.39 K. A magnetic field applied along the [010] direction induces a very sharp transition at 20 kOe, seen as a strong peak in ...
متن کاملPressure-induced quantum phase transition in the spin-liquid TlCuCl3.
The condensation of magnetic quasiparticles into the nonmagnetic ground state has been used to explain novel magnetic ordering phenomena observed in quantum spin systems. We present neutron scattering results across the pressure-induced quantum phase transition and for the novel ordered phase of the magnetic insulator TlCuCl3, which are consistent with the theoretically predicted two degenerate...
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Magnetization measurements were performed on TlCuCl3 with gapped ground state. The critical density and the magnetic phase diagram were obtained. The interacting constant was obtained as U/kB = 313 K. The experimental phase boundary for T < 5 K agrees perfectly with the magnon BEC theory based on the Hartree-Fock approximation with realistic dispersion relations and U/kB = 320 K. The exponent φ...
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ژورنال
عنوان ژورنال: Journal of the Physical Society of Japan
سال: 2005
ISSN: 0031-9015,1347-4073
DOI: 10.1143/jpsjs.74s.129