Erratum: Bose-Einstein condensation in quantum magnets [Rev. Mod. Phys.<b>86</b>, 563 (2014)]

Zapf, Vivien; Jaime, M.; Batista, Cristian D.

doi:10.1103/revmodphys.86.1453

Cited by 81 publications

(162 citation statements)

References 8 publications

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“…Therefore, the heat transport data indicate that the BEC model has limited applicability to IPA-CuCl 3 , similarly to TlCuCl 3 . The theoretical works actually had predicted a general instability of an axially symmetric magnetic condensate toward a violation of this symmetry and the formation of an anisotropy gap at H > H c1 [29,128]. It is related to the presence of anisotropic interactions, such as the dipole-dipole coupling, the spin-orbital interaction, etc.…”

Section: Magnon Bec Systemmentioning

confidence: 99%

“…The theoretical research on magnon BEC could date back to 1956 by Matsubara and Matsuda [30], while TlCuCl 3 was the first experimentally realized material [31]. As a peculiar quantum state, magnon BEC has been extensively studied for many spin-gapped quantum magnets [29].…”

Section: Magnon Bose-einstein Condensation Systemmentioning

confidence: 99%

“…It is related to the presence of anisotropic interactions, such as the dipole-dipole coupling, the spin-orbital interaction, etc. [29,128].…”

Section: Magnon Bec Systemmentioning

confidence: 99%

“…For some particular spin-gapped quantum magnets, the XY-type AFM state induced by the external magnetic field that close the spin gap can be described as a magnon BEC state [21][22][23][24][25][26][27][28][29]. It can result in a QPT from the low-field disordered phase to the high-field long-range ordered state.…”

Section: Magnon Bose-einstein Condensation Systemmentioning

confidence: 99%

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Low-temperature heat transport of spin-gapped quantum magnets

Zhao

Liu

et al. 2016

Sci. China Phys. Mech. Astron.

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This article reviews low-temperature heat transport studies of spin-gapped quantum magnets in the last few decades. Quantum magnets with small spins and low dimensionality exhibit a variety of novel phenomena. Among them, some systems are characteristic of having quantum-mechanism spin gap in their magnetic excitation spectra, including spin-Peierls systems, S = 1 Haldane chains, S = 1/2 spin ladders, and spin dimmers. In some particular spin-gapped systems, the XY-type antiferromagnetic state induced by magnetic field that closes the spin gap can be described as a magnon Bose-Einstein condensation (BEC). Heat transport is effective in probing the magnetic excitations and magnetic phase transitions, and has been extensively studied for the spin-gapped systems. A large and ballistic spin thermal conductivity was observed in the two-leg Heisenberg S = 1/2 ladder compounds. The characteristic of magnetic thermal transport of the Haldane chain systems is quite controversial on both the theoretical and experimental results. For the spin-Peierls system, the spin excitations can also act as heat carriers. In spin-dimer compounds, the magnetic excitations mainly play a role of scattering phonons. The magnetic excitations in the magnon BEC systems displayed dual roles, carrying heat or scattering phonons, in different materials.

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Section: Magnon Bec Systemmentioning

confidence: 99%

Section: Magnon Bose-einstein Condensation Systemmentioning

confidence: 99%

“…It is related to the presence of anisotropic interactions, such as the dipole-dipole coupling, the spin-orbital interaction, etc. [29,128].…”

Section: Magnon Bec Systemmentioning

confidence: 99%

Section: Magnon Bose-einstein Condensation Systemmentioning

confidence: 99%

See 2 more Smart Citations

Low-temperature heat transport of spin-gapped quantum magnets

Zhao

Liu

et al. 2016

Sci. China Phys. Mech. Astron.

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“…Ultracold atoms in optical lattices [1][2][3][4][5] perhaps offer the most direct experimental system in which to realize Bose-Hubbard physics, however the small system sizes and destructive nature of many measurements limit the efficacy of experiments. Dimerized quantum antiferromagnets present a compelling alternative environment due to an exact mapping to a lattice gas of bosons with hard-core repulsion [6][7][8]. These systems consist of lattices of pairs of spins (dimers) which, in the ground state, are all in a singlet configuration.…”

mentioning

confidence: 99%

Bose and Mott glass phases in dimerized quantum antiferromagnets

Thomson

Krüger

2015

Phys. Rev. B

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We examine the effects of disorder on dimerized quantum antiferromagnets in a magnetic field, using the mapping to a lattice gas of hard-core bosons with finite-range interactions. Combining a strong-coupling expansion, the replica method, and a one-loop renormalization group analysis, we investigate the nature of the glass phases formed. We find that away from the tips of the Mott lobes, the transition is from a Mott insulator to a compressible Bose glass, however the compressibility at the tips is strongly suppressed. We identify this finding with the presence of a rare Mott glass phase not previously described by any analytic theory for this model and demonstrate that the inclusion of replica symmetry breaking is vital to correctly describe the glassy phases. This result suggests that the formation of Bose and Mott glass phases is not simply a weak localization phenomenon but is indicative of much richer physics. We discuss our results in the context of both ultracold atomic gases and spin-dimer materials. The disordered Bose-Hubbard model is an ideal system for the thorough study of the effects of disorder on strongly interacting quantum systems. Ultracold atoms in optical lattices [1][2][3][4][5] perhaps offer the most direct experimental system in which to realize Bose-Hubbard physics, however the small system sizes and destructive nature of many measurements limit the efficacy of experiments. Dimerized quantum antiferromagnets present a compelling alternative environment due to an exact mapping to a lattice gas of bosons with hard-core repulsion [6][7][8]. These systems consist of lattices of pairs of spins (dimers) which, in the ground state, are all in a singlet configuration. This state can be viewed as an 'empty' lattice while a local triplet excitation can be thought of as a site occupied by a spin-1 boson ('triplon').Condensation of these bosons corresponds to exotic magnetically ordered states seen in materials such as [18][19][20]. These systems provide excellent experimental setups to probe quantum critical behavior through field-and pressuretuning, and have motivated some notable theoretical works based on bond-operator techniques [21][22][23][24].Recent experiments on disordered quantum antiferromagnets have seen evidence for novel glassy phases, particularly in bromine-doped dichloro-tetrakis-thioureanickel (DTN) [25] where both Bose and Mott glass phases of bosonic quasiparticles have been observed. Such phases have also been seen in other materials [26][27][28][29] and in quantum Monte Carlo simulations [30][31][32][33][34].Motivated by these experimements, in this Letter we present an analytic treatment of dimerized quantum antiferromagnets with weak intra-dimer bond disorder us- ing the hard-core boson formalism. We perform a strong coupling expansion [35,36] combined with a replica disorder average to derive an effective field theory. From a renormalization group (RG) analysis we obtain the phase boundaries between the gapped magnetic states -or in boson language, incompressible Mott ins...

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A Yellow Polariton Condensate in a Dye Filled Microcavity

Cookson

Georgiou

Zasedatelev

et al. 2017

Advanced Optical Materials

119

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We observe polariton condensation in the yellow part of the visible spectrum from a planar organic semiconductor microcavity containing the molecular dye BODIPY-Br. We provide experimental fingerprint of polariton condensation under non-resonant optical excitation, including the non-linear dependence of the emission intensity and wavelength blueshift with increasing excitation density, single excitation pulse dispersion imaging and real space interferometry. The latter two allow us to visualise the collapse of the energy distribution and the long-range coherence of the polariton condensate.

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Erratum: Bose-Einstein condensation in quantum magnets [Rev. Mod. Phys.86, 563 (2014)]

Cited by 81 publications

References 8 publications

Low-temperature heat transport of spin-gapped quantum magnets

Low-temperature heat transport of spin-gapped quantum magnets

Bose and Mott glass phases in dimerized quantum antiferromagnets

A Yellow Polariton Condensate in a Dye Filled Microcavity

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