Instanton Aharonov-Bohm effect and macroscopic quantum coherence in charge-density-wave systems

Bogachek, É. N.; Krive, I. V.; Kulik, I. O.; Rozhavsky, A.S.

doi:10.1103/physrevb.42.7614

Cited by 66 publications

(48 citation statements)

References 16 publications

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“…z eB mc Zagoskin et al [40,41] [45][46][47][48] considered realization of the Aharonov-Bohm effect in dielectric crystals in the state of charge density wave, in which the conductance by charged solitons dominates [49]. This was later discussed in a number of papers [50][51][52][53] and observed in an experiment [54].…”

Section: Persistent Currents In Normal Metals Superconductors and DImentioning

confidence: 99%

“…The observation of oscillating magnetization in large cyclic 10 Fe clusters (Ferric Wheels) [138,139] is one example of interesting possibilities existing in such structures. Flux quantization and persistent currents in Peierls insulators and charge-density-wave conductors with charge transfer mechanism by solitons and instantons is more developed theoretically [45,46,50,53] but requiring further experimental efforts. Same concerns a study of Luttinger liquids in one dimension and their crystallization to onedimensional Wigner crystal [64,65].…”

Section: Conclusion and Future Perspectivesmentioning

confidence: 99%

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Persistent currents, flux quantization, and magnetomotive forces in normal metals and superconductors (Review Article)

Kulik

2010

Low Temperature Physics

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The notion of persistent current comes back to orbital currents in normal metals, semiconductors and even insulators displaying diamagnetic behavior in weak magnetic fields, but came to focus at the discovery of current persistence and magnetic flux quantization at large fields in atomically big but macroscopically small (mesoscopic) objects. The phenomenon bears much similarity with supercurrents in superconductive metals. We will review progress in developing of our understanding of the physical and technological aspects of this phenomenon. The exact solution for currents, magnetic moments and magnetomotive forces (torques) in crossed magnetic fields are presented. Time-dependent phenomena in crossed magnetic and electric fields, and in possibility of spontaneous persistent currents and of work extraction from static and dynamic quantum states are discussed.

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Section: Persistent Currents In Normal Metals Superconductors and DImentioning

confidence: 99%

Section: Conclusion and Future Perspectivesmentioning

confidence: 99%

Persistent currents, flux quantization, and magnetomotive forces in normal metals and superconductors (Review Article)

Kulik

2010

Low Temperature Physics

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“…Bogachek et al [14] suggested that charge quanta of CDWs are multiple of chain number. For example, interference of a single CDW chain results in the period h/2e, while a bundle of CDWs with N chains provides an oscillation of h/2Ne period.…”

Section: Methodsmentioning

confidence: 99%

“…However, the first prediction of AB effect of CDW was made by Bogachek et al [14]. Their model includes a term representing the interaction of the CDW with the vector potential field, and then estimated the oscillation of h/2e.…”

Section: Introductionmentioning

confidence: 99%

Aharonov-Bohm effect in charge-density wave loops with inherent temporal current switching

Tsubota¹,

Inagaki²,

Matsuura³

et al. 2012

EPL

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The Aharonov-Bohm (AB) effect has been accepted and has promoted interdisciplinary scientific activities in modern physics. To observe the AB effect in condensed matter physics, the whole system needs to maintain phase coherence, in a tiny ring of the diameter 1 µm and at low temperatures below 1 K. We report that AB oscillations have been measured at high temperature 79 K by use of charge-density wave (CDW) loops in TaS 3 ring crystals. CDW condensate maintained macroscopic quantum coherence, which extended over the ring circumference 85 µm. The periodicity of the oscillations is h/2e in accuracy within a 10 % range. The observation of the CDW AB effect implies Frohlich superconductivity in terms of macroscopic coherence and will provide a novel quantum interference device running at room temperature.

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“…They are remarkable examples of a mm-scale monocrystal with unlocalized, complete wedge and twist disclinations as well as dispirations. Aside from crystallography, it is interesting how the multi-connected topology affects the electronic properties of NbSe 3 , especially its characteristic charge-density-wave (CDW) states [9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Formation and growth of NbSe3 topological crystals

Tsuneta

Tanda

2004

Journal of Crystal Growth

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Instanton Aharonov-Bohm effect and macroscopic quantum coherence in charge-density-wave systems

Cited by 66 publications

References 16 publications

Persistent currents, flux quantization, and magnetomotive forces in normal metals and superconductors (Review Article)

Persistent currents, flux quantization, and magnetomotive forces in normal metals and superconductors (Review Article)

Aharonov-Bohm effect in charge-density wave loops with inherent temporal current switching

Formation and growth of NbSe3 topological crystals

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