Paramagnetic Meissner Effect and AC Magnetization in Roll-Bonded Cu–Nb Layered Composites

Sandim, Maria José Ramos; Σταμόπουλος, Δ.; Ghivelder, L.; Lim, Samuel Chao Voon; Rollett, A.D.

doi:10.1007/s10948-010-0810-0

Cited by 8 publications

(4 citation statements)

References 42 publications

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“…In addition to high T c cuprates [3][4][5][6][7][8][9][10][11][12], the PME-like attribute is known to occur in a wide variety of other superconductors [13][14][15][16][17][18][19][20][21][22][23][24][25][26]. Numerous explanations (see Ref.…”

Section: Introductionmentioning

confidence: 99%

“…The observation of an anomalous paramagnetic magnetization signal (viz., paramagnetic Meissner effect (PME)), instead of the usual diamagnetic behaviour, on field-cooling a superconducting specimen, continues to attract [1,2] attention ever since its discovery [3] in ceramic sample(s) of a high T c cuprate. In addition to high T c cuprates [3][4][5][6][7][8][9][10][11][12], the PME-like attribute is known to occur in a wide variety of other superconductors [13][14][15][16][17][18][19][20][21][22][23][24][25][26]. Numerous explanations (see [27] for a review), e.g.…”

Section: Introductionmentioning

confidence: 99%

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Paramagnetic magnetization signals and curious metastable behaviour in field-cooled magnetization of a single crystal of superconductor 2H-NbSe₂

Kumar¹,

Tomy²,

Paul³

et al. 2015

J. Phys.: Condens. Matter

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We present here some newer characteristics pertaining to paramagnetic Meissner effect like response in a single crystal of the low Tc superconducting compound 2H-NbSe2 via a detailed study of effects of perturbation on the field-cooled magnetization response. In the temperature range, where an anomalous paramagnetic magnetization occurs, the field-cooled magnetization response is found to be highly metastable: it displays a curious tendency to switch randomly from a given paramagnetic value to a diamagnetic or to a different paramagnetic value, when the system is perturbed by an impulse of an externally applied ac field. The new facets revealed in a single crystal of 2H-NbSe2 surprisingly bear a marked resemblance with the characteristics of magnetization behaviour anticipated for the giant vortex states with multiple flux quanta (LΦ0, Φ0 = hc/2e, L > 1) predicted to occur in mesoscopic-sized superconducting specimen and possible transitions amongst such states.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Paramagnetic magnetization signals and curious metastable behaviour in field-cooled magnetization of a single crystal of superconductor 2H-NbSe₂

Kumar¹,

Tomy²,

Paul³

et al. 2015

J. Phys.: Condens. Matter

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“…Since then, the PME was observed in a variety of metallic superconductors [33][34][35][36][37][38][39][40][41][42][43][44][45][46][47][48], and in different forms such as thin films [49][50][51][52], nanowire arrays [53], multilayer systems [54][55][56][57][58][59], and very importantly, in nanocomposites [60,61] and mesoscopic structured samples [62][63][64][65][66]. Multilayered materials may be composed of superconductor/normal metal, but also superconducting/para-or ferromagnetic ones.…”

Section: Introductionmentioning

confidence: 99%

The Paramagnetic Meissner Effect (PME) in Metallic Superconductors

Koblischka

Půst

Chang

et al. 2023

Metals

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The experimental data in the literature concerning the Paramagnetic Meissner Effect (PME) or also called Wohlleben effect are reviewed with the emphasis on the PME exhibited by metallic, s-wave superconductors. The PME was observed in field-cool cooling (FC-C) and field-cool warming (FC-W) m(T)-measurements on Al, Nb, Pb, Ta, in compounds such as, e.g., NbSe2, In-Sn, ZrB12, and others, and also in MgB2, the metallic superconductor with the highest transition temperature. Furthermore, samples with different shapes such as crystals, polycrystals, thin films, bi- and multilayers, nanocomposites, nanowires, mesoscopic objects, and porous materials exhibited the PME. The characteristic features of the PME, found mainly in Nb disks, such as the characteristic temperatures T1 and Tp and the apparative details of the various magnetic measurement techniques applied to observe the PME, are discussed. We also show that PME can be observed with the magnetic field applied parallel and perpendicular to the sample surface, that PME can be removed by abrading the sample surface, and that PME can be introduced or enhanced by irradiation processes. The PME can be observed as well in magnetization loops (MHLs, m(H)) in a narrow temperature window Tp<Tc, which enables the construction of a phase diagram for a superconducting sample exhibiting the PME. We found that the Nb disks still exhibit the PME after more than 20 years, and we present the efforts of magnetic imaging techniques (scanning SQUID microscopy, magneto-optics, diamond nitrogen-vacancy (NV)-center magnetometry, and low-energy muon spin spectroscopy, (LE-μSR)). Various attempts to explain PME behavior are discussed in detail. In particular, magnetic measurements of mesoscopic Al disks brought out important details employing the models of a giant vortex state and flux compression. Thus, we consider these approaches and demagnetization effects as the base to understand the formation of the paramagnetic signals in most of the materials investigated. New developments and novel directions for further experimental and theoretical analysis are also outlined.

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“…In recent years, the exploration of temperature variation of the field-cooled cool-down (FCC) magnetization (M FCC ðTÞ) measurements at low fields in a variety of superconductors [1][2][3][4][5][6][7][8][9][10][11][12] has revealed a variety of characteristics which have been ascribed to the phenomenon of surface superconductivity [13]. Many interesting features reported in the M FCC ðTÞ responses at different fields in a weakly-pinned single crystal of a low T c ($ 8:3 K) superconductor, Ca 3 Rh 4 Sn 13 [10], include the occurrence of anomalous paramagnetic magnetization a la paramagnetic Meissner effect (PME), modulations overriding PME like response, intersection of the M FCC ðTÞ curves for different field values across a field interval at a characteristic temperature T Ã VL , below the onset temperature, T c , of superconducting response, etc.…”

Section: Introductionmentioning

confidence: 99%

Evidence of surface superconductivity and multi-quanta vortex states in a weakly-pinned single crystal of Ca3Ir4Sn13

Kumar

Singh

Thamizhavel

et al. 2015

Physica C: Superconductivity and its Applications

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a b s t r a c tWe report here the observation of anomalous paramagnetic signal(s) in the isofield field-cooled cooldown magnetization scans (M FCC ðTÞ) recorded for a single crystal of a low T c superconductor Ca 3 Ir 4 Sn 13 . Novel features emanating from the M FCC ðTÞ response include an oscillatory magnetization behavior below T c and a rich multiplicity (non-uniqueness) in magnetization ranging from diamagnetism to paramagnetism at a given H; T value. The metastability in M FCC ðTÞ has been ascribed to non-unique coexistence of multi-quanta vortex states (LU 0 ; U 0 ¼ hc=2e, L > 1) and single quantum (L ¼ 1, Abrikosov) vortices.Additionally, the isothermal MðHÞ scans recorded across a short window of temperature just below T c show evidence for only the multi-quanta vortex states in the domain of surface superconductivity, with no fingerprint(s) of pinned Abrikosov lattice.

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Paramagnetic Meissner Effect and AC Magnetization in Roll-Bonded Cu–Nb Layered Composites

Cited by 8 publications

References 42 publications

Paramagnetic magnetization signals and curious metastable behaviour in field-cooled magnetization of a single crystal of superconductor 2H-NbSe₂

Paramagnetic magnetization signals and curious metastable behaviour in field-cooled magnetization of a single crystal of superconductor 2H-NbSe₂

The Paramagnetic Meissner Effect (PME) in Metallic Superconductors

Evidence of surface superconductivity and multi-quanta vortex states in a weakly-pinned single crystal of Ca3Ir4Sn13

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Paramagnetic Meissner Effect and AC Magnetization in Roll-Bonded Cu–Nb Layered Composites

Cited by 8 publications

References 42 publications

Paramagnetic magnetization signals and curious metastable behaviour in field-cooled magnetization of a single crystal of superconductor 2H-NbSe2

Paramagnetic magnetization signals and curious metastable behaviour in field-cooled magnetization of a single crystal of superconductor 2H-NbSe2

The Paramagnetic Meissner Effect (PME) in Metallic Superconductors

Evidence of surface superconductivity and multi-quanta vortex states in a weakly-pinned single crystal of Ca3Ir4Sn13

Contact Info

Product

Resources

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Paramagnetic magnetization signals and curious metastable behaviour in field-cooled magnetization of a single crystal of superconductor 2H-NbSe₂

Paramagnetic magnetization signals and curious metastable behaviour in field-cooled magnetization of a single crystal of superconductor 2H-NbSe₂