Melting of Trapped Few-Particle Systems

Böning, Jens; Filinov, A.; Ludwig, P.; Baumgartner, H.; Bönitz, M.; Lozovik, Yu. E.

doi:10.1103/physrevlett.100.113401

Cited by 59 publications

(61 citation statements)

References 16 publications

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“…60,61 To emphasize the role of the coupling strength and the packing fraction onto the particle uctuations, we calculate the relative IDF via the denition used in ref. 61 and 62…”

Section: Inter-particle Distance Fluctuationsmentioning

confidence: 99%

Effect of confinement on the mode dynamics of dipole clusters

et al. 2015

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Dynamical properties of colloidal clusters composed of paramagnetic beads are presented. The clusters were trapped either in a parabolic trough or in a hard-wall confinement. In order to access the dynamics of the ensembles, the instantaneous normal mode (INM) approach is utilized, which uses cluster configurations as an input. The peaks in the mode spectra weaken when the system size is increased and when the coupling strength is lowered. The short-time diffusive properties of the clusters are deduced using the INM technique. It is found that angular diffusion is always larger than radial diffusion regardless of the shape of the external trap. Further, short-time diffusion seems to be almost independent of the coupling strength in the solid regime, but decreases with increasing packing fraction and size of the ensembles. In general, it is found that diffusion is larger for parabolically confined than for hard-wall trapped clusters.

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“…60,61 To emphasize the role of the coupling strength and the packing fraction onto the particle uctuations, we calculate the relative IDF via the denition used in ref. 61 and 62…”

Section: Inter-particle Distance Fluctuationsmentioning

confidence: 99%

Effect of confinement on the mode dynamics of dipole clusters

et al. 2015

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“…We mention that, for very small systems, recently a more appropriate quantity has been proposed: the variance of the block-averaged interparticle distance fluctuations, see Ref. 40.…”

Section: Conditions For Crystal Formationmentioning

confidence: 99%

Classical and quantum Coulomb crystals

et al. 2008

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Strong correlation effects in classical and quantum plasmas are discussed. In particular, Coulomb ͑Wigner͒ crystallization phenomena are reviewed focusing on one-component non-neutral plasmas in traps and on macroscopic two-component neutral plasmas. The conditions for crystal formation in terms of critical values of the coupling parameters and the distance fluctuations and the phase diagram of Coulomb crystals are discussed.

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“…A rather detailed analysis of melting in Coulomb balls was performed by APOLINARIO [100] who observed that the melting often proceeds in several steps. Finally, in a recent study [120] it was observed that the quantity u rel has a number of difficulties in small systems -the result strongly depends on the way of calculation. Instead it was suggested to use another quantity -the variance of the block averaged interparticle distance fluctuations (VIDF)…”

Section: Finite Temperature Effects Solid-liquid Phase Transitionmentioning

confidence: 99%

Structure and Phase Transitions of Yukawa Balls

Baumgartner

Block

Bönitz

2009

Contrib. Plasma Phys.

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In this review, an overview of structural properties and phase transitions in finite spherical dusty (complex) plasma crystals -so-called Yukawa balls -is given. These novel kinds of Wigner crystals can be directly analyzed experimentally with video cameras. The experiments clearly reveal a shell structure and allow to determine the shell populations, to observe metastable states and transitions between configurations as well as phase transitions. The experimental observations of the static properties are well explained by a rather simple theoretical model which treats the dust particles as being confined by a parabolic potential and interacting via an isotropic Yukawa pair potential. The excitation properties of the Yukawa balls such as normal modes and the dynamic behavior, including the time-dependent formation of the crystal requires, in addition, to include the effect of friction between the dust particles and the neutral gas. Aside from first-principle molecular dynamics and Monte Carlo simulations several analytical approaches are reviewed which include shell models and a continuum theory. A summary of recent results and theory-experiment comparisons is given and questions for future research activities are outlined.

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Melting of Trapped Few-Particle Systems

Cited by 59 publications

References 16 publications

Effect of confinement on the mode dynamics of dipole clusters

Effect of confinement on the mode dynamics of dipole clusters

Classical and quantum Coulomb crystals

Structure and Phase Transitions of Yukawa Balls

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