Density of States in High-<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi>T</mml:mi></mml:mrow><mml:mrow><mml:mi>c</mml:mi></mml:mrow></mml:msub></mml:mrow></mml:math>Superconductor Vortices

Berthod, Christophe; Giovannini, B.

doi:10.1103/physrevlett.87.277002

Cited by 24 publications

(20 citation statements)

References 37 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Zhu et al recently carried out selfconsistent mean-®eld theory that included both AFM and d-wave superconductivity leading to local AFM-like spin-density-wave (SDW) order near the vortex core [201]. The pseudogap characteristic of the underdoped cuprates has also been introduced in a phenomenological way to account for the splitting of the ZBCP in HTSCs [202].…”

Section: The Validity Of the Semi-classical Approximationmentioning

confidence: 99%

Low-energy quasiparticles in high- T c cuprates

Hussey¹

2002

Advances in Physics

152

146

View full text Add to dashboard Cite

Section: The Validity Of the Semi-classical Approximationmentioning

confidence: 99%

Low-energy quasiparticles in high- T c cuprates

Hussey¹

2002

Advances in Physics

152

146

View full text Add to dashboard Cite

“…The LDOS is larger in the direction of the nodes where the spatial decay of core states is slower ͑Morita et al, 1997a;. In the microscopic Bogoliubov-de Gennes calculations this LDOS anisotropy is weak, but can be as large as ϳ10% close to the core center ͑Morita et al., 1997a;Berthod and Giovannini, 2001͒ and should be accessible experimentally in clean samples. The Eilenberger formalism leads to a more complex and somewhat stronger fourfold anisotropy ͑Schophol and Ichioka et al, 1996͒.…”

Section: Intrinsic Shape Of Vorticesmentioning

confidence: 99%

Scanning tunneling spectroscopy of high-temperature superconductors

et al. 2007

View full text Add to dashboard Cite

Tunneling spectroscopy has played a central role in the experimental verification of the microscopic theory of superconductivity in classical superconductors. Initial attempts to apply the same approach to high-temperature superconductors were hampered by various problems related to the complexity of these materials. The use of scanning tunneling microscopy and spectroscopy ͑STM and STS͒ on these compounds allowed the main difficulties to be overcome. This success motivated a rapidly growing scientific community to apply this technique to high-temperature superconductors. This paper reviews the experimental highlights obtained over the last decade. The crucial efforts to gain control over the technique and to obtain reproducible results are first recalled. Then a discussion on how the STM and STS techniques have contributed to the study of some of the most unusual and remarkable properties of high-temperature superconductors is presented: the unusually large gap values and the absence of scaling with the critical temperature, the pseudogap and its relation to superconductivity, the unprecedented small size of the vortex cores and its influence on vortex matter, the unexpected electronic properties of the vortex cores, and the combination of atomic resolution and spectroscopy leading to the observation of periodic local density of states modulations in the superconducting and pseudogap states and in the vortex cores.

show abstract

“…The vortices offer a chance to disentangle the spectral features related to pairing from those that are unrelated11. In this context, the observation of discrete states in the vortex cores121314151617 has been a considerable challenge for theory1819202122232425, because the calculated tunnelling spectrum in a vortex of symmetry presents a broad continuous maximum centred at zero bias not observed in the experiments.…”

mentioning

confidence: 96%

Revisiting the vortex-core tunnelling spectroscopy in YBa2Cu3O7−δ

Bruér¹,

Maggio-Aprile²,

Jenkins³

et al. 2016

Nat Commun

View full text Add to dashboard Cite

The observation by scanning tunnelling spectroscopy of Abrikosov vortex cores in the high-temperature superconductor YBa2Cu3O7−δ (Y123) has revealed a robust pair of electron-hole symmetric states at finite subgap energy. Their interpretation remains an open question because theory predicts a different signature in the vortex cores, characterized by a strong zero-bias conductance peak. Here, we present scanning tunnelling spectroscopy data on very homogeneous Y123 at 0.4 K revealing that the subgap features do not belong to vortices: they are actually observed everywhere along the surface with high spatial and energy reproducibility, even in the absence of magnetic field. Detailed analysis and modelling show that these states remain unpaired in the superconducting phase and belong to an incoherent channel, which contributes to the tunnelling signal in parallel with the superconducting density of states.

show abstract

Density of States in High-TcSuperconductor Vortices

Cited by 24 publications

References 37 publications

Low-energy quasiparticles in high- T c cuprates

Low-energy quasiparticles in high- T c cuprates

Scanning tunneling spectroscopy of high-temperature superconductors

Revisiting the vortex-core tunnelling spectroscopy in YBa2Cu3O7−δ

Contact Info

Product

Resources

About