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Parts, Ü.; Thuneberg, E. V.; Volovik, G. E.; Koivuniemi, J.H.; Ruutu, V. M. H.; Heinilä, Marko T.; Karimäki, J. M.; Krusius, M.

doi:10.1103/physrevlett.72.3839

Cited by 137 publications

(52 citation statements)

References 14 publications

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“…This inhibits ejection of the vortex and the Meissner effect. A similar texture structure and its dynamics have also been reported in other multicomponent systems such as the superfluid 3 He [25][26][27][28][29]. We can expect a similar situation to occur in Ba 0.2 K 0.8 Fe 2 As 2 .…”

Section: Discussionmentioning

confidence: 49%

Disappearance of Meissner Effect and Specific Heat Jump in a Multiband Superconductor, Ba0.2K0.8Fe2As2

Tanaka

Shirage

Iyo

2009

J Supercond Nov Magn

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We observed the disappearance of the Meissner effect and the specific heat jump in Ba 0.2 K 0.8 Fe 2 As 2 . A crossover of the type of superconducting order parameter can be a source of these phenomena. A quantum phase disorder provides a possible explanation.Keywords Two-band superconductor · Two-component superconductor · Two-component quantum condensation · Soliton · i-soliton · Meissner effect · Specific heat · Fe-based superconductor · SU(2) superconductivity 1 Introduction

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Section: Discussionmentioning

confidence: 49%

Disappearance of Meissner Effect and Specific Heat Jump in a Multiband Superconductor, Ba0.2K0.8Fe2As2

Tanaka

Shirage

Iyo

2009

J Supercond Nov Magn

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“…Minimizing the sum of two contributions with respect to b, one obtains b = (3σ/ρ s Ω 2 ) 1/3 . For Ω = 1 rad/s, this gives 0.3-0.4 mm, which was quantitatively confirmed by the NMR absorption measurement in superfluid 3 He-A [27]. The possible sheet configurations and their response for rotating drive were studied by numerical simulations in Ref.…”

Section: Vortex Sheet In a Rotating Superfluid Heliummentioning

confidence: 70%

“…Next, we give an analytical discussion of the sheet structure. The distance of the vortex sheet can be estimated by the ratio of the surface tension of the domain boundary and the kinetic energy of the superflow due to the vortices [27]. Comparing the several length scales characteristic of our system, we can obtain the phase diagram of the vortex states, which provides observable conditions of the several vortex phases, such as multiple vortex sheets with stripe pattern, or "serpentine" sheets, or the "rotating droplets."…”

Section: Introductionmentioning

confidence: 99%

“…Comparing the several length scales characteristic of our system, we can obtain the phase diagram of the vortex states, which provides observable conditions of the several vortex phases, such as multiple vortex sheets with stripe pattern, or "serpentine" sheets, or the "rotating droplets." There are other condensed-matter systems characterized by the multicomponent order parameters in which a vortex sheet is observable [27,28]. In Sec.…”

Section: Introductionmentioning

confidence: 99%

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Vortex sheet in rotating two-component Bose-Einstein condensates

Kasamatsu

Tsubota

2009

Phys. Rev. A

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We investigate vortex states of immiscible two-component Bose-Einstein condensates under rotation through numerical simulations of the coupled Gross-Pitaevskii equations. For strong intercomponent repulsion, the two components undergo phase separation to form several density domains of the same component. In the presence of the rotation, the nucleated vortices are aligned between the domains to make up winding chains of singly quantized vortices, a vortex sheet, instead of periodic vortex lattices. The vortices of one component are located at the region of the density domains of the other component, which results in the serpentine domain structure. The sheet configuration is stable as long as the imbalance of the intracomponent parameter is small. We employ a planar sheet model to estimate the distance between neighboring sheets, determined by the competition between the surface tension of the domain wall and the kinetic energy of the superflow via quantized vortices. By comparing the several length scales in this system, the phase diagram of the vortex state is obtained.

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“…In the A-phase of rotating liquid-3 He the vortex sheet configuration was found theoretically [10] and observed experimentally [11]. There is a well-known analogy between the rotating superfluid and a superconductor in the external magnetic field with the rotation pseudovector Ω in the superfluid playing the role of the magnetic field in a superconductor.…”

mentioning

confidence: 96%

Alternating para/diamagnetic domains in a p -wave superconductor

Bel¹,

Rosenstein²,

Shapiro³

et al. 2003

Europhys. Lett.

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Abstract. -The mesoscopic one-dimensional magnetic texture caused by small Zeeman coupling in a p-wave superconductor in the magnetic field is found. The field orientation is opposite on the two sides of the texture and the magnitude can be even smaller than Hc1. The texture is not built from various singular topological defects, like vortices, as previously found in the simplest three-component Ginzburg-Landau model of superconductors.Introduction. -The order parameter in many classes of superconductors including organics of the type of Bechgaard salts [1], unconventional [2] and multiband superconductors [3] like heavy fermions or SrRuO, generally has several components. It describes coexisting condensates of Cooper pairs. The symmetry of the order parameter in unconventional superconductors is related to the crystallographic symmetry group of the material, the structure of the Fermi surface and the nature of the pairing mechanism. Although the number of charged fields and their transformation properties under rotations are different in any case, the common feature of theories describing these diverse systems remains the U (1) local gauge invariance. In systems of this kind, in the presence of an external magnetic field the major role is played by various topological defects. It is well known that, while in the simplest case, that of the one-component order parameter, the Abrikosov vortices (AV) are the only kind of topological defects, in the multicomponent case other types of defects exist.Machida [4] argued that in the p-wave superconductors with weak spin-orbit coupling the triplet pairing function can be represented by a three-dimensional complex vector field. The simplest Ginzburg-Landau model describing heavy fermion UPt 3 , even subjected to an external magnetic field B under condition of negligible Zeeman coupling, has an approximate SO(3) symmetry making it more amenable (and interesting) to mathematical analysis. This model was subsequently studied in more detail and various topologically distinct "non-Abrikosov" defects with sophisticated structure were found: coreless magnetic skyrmions [5,6], field-carrying

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Vortex sheet in rotating superfluidA3

Cited by 137 publications

References 14 publications

Disappearance of Meissner Effect and Specific Heat Jump in a Multiband Superconductor, Ba0.2K0.8Fe2As2

Disappearance of Meissner Effect and Specific Heat Jump in a Multiband Superconductor, Ba0.2K0.8Fe2As2

Vortex sheet in rotating two-component Bose-Einstein condensates

Alternating para/diamagnetic domains in a p -wave superconductor

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