A chain of singly charged particles confined by a harmonic potential exhibits a structural transition to a zigzag configuration when the radial potential frequency is at a critical value, which depends on the particle number. This structural change is a phase transition of second order, whose order parameter is the ions' transverse displacement from the chain axis. The transition is driven by transverse, short-wavelength vibrational modes. At ultra-low temperatures the linear-zigzag instability is a quantum phase transition of the same universality class of Ising models.[GRAPHICS].

Fishman, S., Podolsky, D., Shimshoni, E., Silvi, P., Calarco, T., Montangero, S., et al. (2015). The linear-zigzag structural transition in cold ion chains. IOP Press [10.3254/978-1-61499-526-5-103].

The linear-zigzag structural transition in cold ion chains

Calarco, T;
2015

Abstract

A chain of singly charged particles confined by a harmonic potential exhibits a structural transition to a zigzag configuration when the radial potential frequency is at a critical value, which depends on the particle number. This structural change is a phase transition of second order, whose order parameter is the ions' transverse displacement from the chain axis. The transition is driven by transverse, short-wavelength vibrational modes. At ultra-low temperatures the linear-zigzag instability is a quantum phase transition of the same universality class of Ising models.[GRAPHICS].
2015
Ion Traps for Tomorrow's Applications
103
114
Fishman, S., Podolsky, D., Shimshoni, E., Silvi, P., Calarco, T., Montangero, S., et al. (2015). The linear-zigzag structural transition in cold ion chains. IOP Press [10.3254/978-1-61499-526-5-103].
Fishman, S; Podolsky, D; Shimshoni, E; Silvi, P; Calarco, T; Montangero, S; Morigi, G
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/969315
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