Observation of the Vortex Lattice Spinodal in<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msub><mml:mrow><mml:mi>NbSe</mml:mi></mml:mrow><mml:mn>2</mml:mn></mml:msub></mml:math>

Xiao, Zhili; Dogru, Ozgur; Andrei, Eva Y.; Shuk, P.; Greenblatt, Martha

doi:10.1103/physrevlett.92.227004

Cited by 45 publications

(55 citation statements)

References 31 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…(Kato and Nagaosa, 1993). The spinodal point was observed in N bSe 2 ( Adesso et al, 2006; Thakur et al, 2005;Xiao et al, 2004) at the position consistent with the theoretical estimate.…”

Section: Spinodal Pointsupporting

confidence: 76%

Ginzburg-Landau theory of type II superconductors in magnetic field

2010

View full text Add to dashboard Cite

Thermodynamics of type II superconductors in electromagnetic field based on the GinzburgLandau theory is presented. The Abrikosov flux lattice solution is derived using an expansion in a parameter characterizing the "distance" to the superconductor -normal phase transition line. The expansion allows a systematic improvement of the solution. The phase diagram of the vortex matter in magnetic field is determined in detail. In the presence of significant thermal fluctuations on the mesoscopic scale (for example in high Tc materials) the vortex crystal melts into a vortex liquid. A quantitative theory of thermal fluctuations using the lowest Landau level approximation is given. It allows to determine the melting line and discontinuities at melt, as well as important characteristics of the vortex liquid state. In the presence of quenched disorder (pinning) the vortex matter acquires certain "glassy" properties. The irreversibility line and static properties of the vortex glass state are studied using the "replica" method. Most of the analytical methods are introduced and presented in some detail. Various quantitative and qualitative features are compared to experiments in type II superconductors, although the use of a rather universal Ginzburg -Landau theory is not restricted to superconductivity and can be applied with certain adjustments to other physical systems, for example rotating Bose -Einstein condensate.

show abstract

“…(Kato and Nagaosa, 1993). The spinodal point was observed in N bSe 2 ( Adesso et al, 2006; Thakur et al, 2005;Xiao et al, 2004) at the position consistent with the theoretical estimate.…”

Section: Spinodal Pointsupporting

confidence: 76%

Ginzburg-Landau theory of type II superconductors in magnetic field

2010

View full text Add to dashboard Cite

show abstract

“…An independent evidence in support of the first order nature of the phase transition in typically weakly pinned single crystals of 2H-NbSe 2 came via bulk transport studies [8,9] and was confirmed via local scanning ac micro-Hall bar microscopy [10] from the visualization of an interface separating the weaker pinned (ordered) and stronger pinned (disordered) regions across the PE. The first order phase transition notion appears further fortified with the recent results of Xiao et al [11], who explored different (partially ordered) metastable states above the usually ascertained T on p . Their transport measurements essentially amount to locating higher peak temperatures (T p ) for superheated metastable states.…”

mentioning

confidence: 95%

“…[11]. In terms of the dimensionless scaled variables, LR theory gives the spinodal line as, a LR (t, h) =…”

mentioning

confidence: 99%

Exploring metastability via third harmonic measurements in single crystals of2H−NbSe2showing an anomalous peak effect

et al. 2005

View full text Add to dashboard Cite

We explore the metastability effects across the order-disorder transition pertaining to the peak effect phenomenonon in critical current density (J c ) via the first and the third harmonic ac susceptibility measurements in the weakly pinned single crystals of 2H-N bSe 2 . An analysis of our data suggests that an imprint of the limiting (spinodal) temperature above which J c is path independent can be conveniently located in the third harmonic data (χ ′ 3ω ).

show abstract

“…9 and 29͒ recently observed in the dynamics of several low-T c compounds. 37 The actual melting temperature ͑T m ͒ is shifted downwards due to quenched disorder and appears as a smeared spike somewhat below the theoretical value T m clean . 29 …”

Section: B Vortex Meltingmentioning

confidence: 99%

Thermal fluctuations and vortex melting in theNb3Snsuperconductor from high resolution specific heat measurements

et al. 2006

View full text Add to dashboard Cite

The range of critical thermal fluctuations in "classical" bulk superconductors is extremely small and especially in low fields hardly experimentally accessible. With a new type of calorimeter we have been able to resolve a small lambda anomaly within a narrow temperature range around the H c2 line. We show that the evolution of the anomaly as a function of magnetic field follows scaling laws expected in the presence of critical fluctuations. The lower onset of the fluctuation regime shows many characteristics of a continuous solid-to-liquid transition in the vortex matter. It can be driven into a first-order vortex melting transition by a small ac field which helps the vortex matter to reach equilibrium.

show abstract

Observation of the Vortex Lattice Spinodal inNbSe2

Cited by 45 publications

References 31 publications

Ginzburg-Landau theory of type II superconductors in magnetic field

Ginzburg-Landau theory of type II superconductors in magnetic field

Exploring metastability via third harmonic measurements in single crystals of2H−NbSe2showing an anomalous peak effect

Thermal fluctuations and vortex melting in theNb3Snsuperconductor from high resolution specific heat measurements

Contact Info

Product

Resources

About