Critical dielectric susceptibility at a magnetic BEC quantum critical point

@article{Hayashida2021CriticalDS,
  title={Critical dielectric susceptibility at a magnetic BEC quantum critical point},
  author={Shohei Hayashida and L. Huberich and D. B. Flavi'an and Z. Yan and K. Yu. Povarov and Severian Gvasaliya and Andrey Zheludev},
  journal={Physical Review Research},
  year={2021}
}
Magnetic-field-induced phase transitions are investigated in the frustrated gapped quantum paramagnet Rb$_{2}$Cu$_{2}$Mo$_{3}$O$_{12}$ through dielectric and calorimetric measurements on single crystal samples. It is clarified that the previously reported dielectric anomaly at 8 K in powder samples is not due to a chiral spin liquid state as has been suggested, but rather to a tiny amount of a ferroelectric impurity phase. Two field-induced quantum phase transitions between paraelectric… Expand

References

SHOWING 1-10 OF 90 REFERENCES
Manifestation of magnetic quantum fluctuations in the dielectric properties of a multiferroic.
TLDR
It is uncovered theoretically that a linear relation between AF susceptibility and dielectric constant stems from the generic magnetoelectric coupling and directly explains the experimental findings, opening a new pathway for studying quantum criticality in condensed matter. Expand
Magnetic field induced ferroelectric transition of quasi one-dimensional frustrated quantum spin chain system Rb2Cu2Mo3O12
Dielectric and magnetic properties have been studied in magnetic fields up to 9 T for a quasi-one-dimensional frustrated spin-1/2 system Rb2Cu2Mo3O12, which does not exhibit a three-dimensionalExpand
Dielectric anomaly in the quasi-one-dimensional frustrated spin-12system Rb2(Cu1−xMx)2Mo3O12(M=Ni and Zn)
Dielectric and magnetic properties have been studied for poly-crystalline samples of quasi-one-dimensional frustrated spin-1/2 system Rb$_{2}$(Cu$_{1-x}$M$_{x}$)$_{2}$Mo$_{3}$O$_{12}$(M=Ni and Zn)Expand
Giant dielectric nonlinearities at a magnetic Bose-Einstein condensation
We experimentally investigate the dielectric response of the low-dimensional gapped quantum magnet Cu$_2$Cl$_{4}\cdot$H$_8$C$_4$SO$_2$ near a magnetic field-induced quantum critical point, whichExpand
Nematic phase and phase separation near saturation field in frustrated ferromagnets
We study the effects of quantum fluctuations in magnetic properties of quantum frustrated ferromagnets in a magnetic field. It is shown that a non-classical phase or a phase separation appears due toExpand
One- and three-dimensional quantum phase transitions and anisotropy in Rb2Cu2Mo3O12
Single crystal samples of the frustrated quasi one-dimensional quantum magnet Rb$_{2}$Cu$_{2}$Mo$_{3}$O$_{12}$ are investigated by magnetic, thermodynamic and electron spin resonance (ESR)Expand
Quantum phase transition from a superfluid to a Mott insulator in a gas of ultracold atoms
TLDR
This work observes a quantum phase transition in a Bose–Einstein condensate with repulsive interactions, held in a three-dimensional optical lattice potential, and can induce reversible changes between the two ground states of the system. Expand
Vector chiral and multipolar orders in the spin- 1 2 frustrated ferromagnetic chain in magnetic field
We study the one-dimensional spin-1/2 Heisenberg chain with competing ferromagnetic nearest-neighbor ${J}_{1}$ and antiferromagnetic next-nearest-neighbor ${J}_{2}$ exchange couplings in the presenceExpand
Emergent spin-1 Haldane gap and ferroelectricity in a frustrated spin- 12 ladder
Combined experimental and theoretical studies reveal that the low-temperature magnetic properties of Rb${}_{2}$Cu${}_{2}$Mo${}_{3}$O${}_{12}$ are nicely explained in terms of a two-leg ladder ofExpand
Microscopic theory of spin-polarization coupling in multiferroic transition metal oxides
A systematic microscopic theory of magnetically induced ferroelectricity and lattice modulation is presented for various electron configurations of Mott-insulating transition metal oxides. The originExpand
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