Next Article in Journal / Special Issue
Dzyaloshinskii–Moriya Coupling in 3d Insulators
Previous Article in Journal
Comparative Study of the Reactivity of the Tungsten Oxides WO2 and WO3 with Beryllium at Temperatures up to 1273 K
Previous Article in Special Issue
Tc and Other Cuprate Properties in Relation to Planar Charges as Measured by NMR
Open AccessArticle

Classifying Induced Superconductivity in Atomically Thin Dirac-Cone Materials

1
M. N. Miheev Institute of Metal Physics, Ural Branch, Russian Academy of Sciences, 18, S. Kovalevskoy St., Ekaterinburg 620108, Russia
2
NANOTECH Centre, Ural Federal University, 19 Mira St., Ekaterinburg 620002, Russia
Condens. Matter 2019, 4(3), 83; https://doi.org/10.3390/condmat4030083
Received: 19 August 2019 / Revised: 15 September 2019 / Accepted: 16 September 2019 / Published: 18 September 2019
(This article belongs to the Special Issue From cuprates to Room Temperature Superconductors)
Recently, Kayyalha et al. (Phys. Rev. Lett., 2019, 122, 047003) reported on the anomalous enhancement of the self-field critical currents (Ic(sf,T)) at low temperatures in Nb/BiSbTeSe2-nanoribbon/Nb Josephson junctions. The enhancement was attributed to the low-energy Andreev-bound states arising from the winding of the electronic wave function around the circumference of the topological insulator BiSbTeSe2 nanoribbon. It should be noted that identical enhancement in Ic(sf,T) and in the upper critical field (Bc2(T)) in approximately the same reduced temperatures, were reported by several research groups in atomically thin junctions based on a variety of Dirac-cone materials (DCM) earlier. The analysis shows that in all these S/DCM/S systems, the enhancement is due to a new superconducting band opening. Taking into account that several intrinsic superconductors also exhibit the effect of new superconducting band(s) opening when sample thickness becomes thinner than the out-of-plane coherence length (ξc(0)), we reaffirm our previous proposal that there is a new phenomenon of additional superconducting band(s) opening in atomically thin films. View Full-Text
Keywords: superconductivity enhancement in atomically thin films; Dirac-cone materials; single layer graphene; Josephson junctions; multiple-band superconductivity superconductivity enhancement in atomically thin films; Dirac-cone materials; single layer graphene; Josephson junctions; multiple-band superconductivity
Show Figures

Figure 1

MDPI and ACS Style

Talantsev, E.F. Classifying Induced Superconductivity in Atomically Thin Dirac-Cone Materials. Condens. Matter 2019, 4, 83.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop