Please use this identifier to cite or link to this item:
http://hdl.handle.net/1942/10454
Title: | Intrinsic granularity in nanocrystalline boron-doped diamond films measured by scanning tunneling microscopy | Authors: | Willems, B. L. Dao, V. H. Vanacken, J. Chibotaru, L. F. Moshchalkov, V. V. Guillamon, I. Suderow, H. Vieira, S. JANSSENS, Stoffel WILLIAMS, Oliver HAENEN, Ken WAGNER, Patrick |
Issue Date: | 2009 | Publisher: | AMER PHYSICAL SOC | Source: | PHYSICAL REVIEW B, 80(22) | Abstract: | We report on low-temperature scanning tunneling microscopy/spectroscopy experiments performed on superconducting boron-doped nanocrystalline diamond (NCD) thin films prepared by chemical-vapor deposition methods. The most representative sample reveals the observed superconducting gap (Delta) highly modulated over a length scale on the order of similar to 30 nm, which is much shorter than the typical diamond grain size. The sample local and macroscopic behavior favors for the Delta modulation as being an intrinsic property of the NCD granules. On the other hand, Delta shows its temperature dependence [Delta(T)] consistent with the results obtained by Fominov and Feigel'man [Phys. Rev. B 63, 094518 (2001)], who studied theoretically the behavior of the superconducting gap of a BCS superconductor in contact with a normal layer by solving the one-dimensional Usadel equations on the superconducting side of the superconducting to normal interface. | Notes: | [Willems, B. L.; Vanacken, J.; Moshchalkov, V. V.] Katholieke Univ Leuven, INPAC, Nanoscale Superconduct & Magnetism & Pulsed Field, B-3001 Louvain, Belgium. [Willems, B. L.] Univ Nacl Mayor San Marcos, Fac Ciencias Fis, Lima 14, Peru. [Dao, V. H.; Chibotaru, L. F.] Univ Louvain, Div Quantum & Phys Chem, B-3001 Louvain, Belgium. [Dao, V. H.; Chibotaru, L. F.] Univ Louvain, INPAC, B-3001 Louvain, Belgium. [Janssens, S. D.; Williams, O. A.; Haenen, K.; Wagner, P.] Hasselt Univ, Inst Mat Res, BE-3590 Diepenbeek, Belgium. [Guillamon, I.; Suderow, H.; Vieira, S.] Univ Autonoma Madrid, Fac Ciencias, Dept Fis Mat Condensada, Inst Ciencia Mat Nicolas Cabrera,Lab Bajas Temp, E-28049 Madrid, Spain. [Williams, O. A.; Haenen, K.; Wagner, P.] IMEC VZW, Div IMOMEC, BE-3590 Diepenbeek, Belgium. bramleo@hotmail.com | Keywords: | boron; diamond; magnetic moments; nanostructured materials; plasma CVD; scanning tunnelling microscopy; scanning tunnelling spectroscopy; superconducting energy gap; superconducting thin films | Document URI: | http://hdl.handle.net/1942/10454 | ISSN: | 1098-0121 | DOI: | 10.1103/PhysRevB.80.224518 | ISI #: | 000273228500092 | Category: | A1 | Type: | Journal Contribution | Validations: | ecoom 2011 |
Appears in Collections: | Research publications |
Show full item record
SCOPUSTM
Citations
16
checked on Sep 5, 2020
WEB OF SCIENCETM
Citations
16
checked on Apr 30, 2024
Page view(s)
130
checked on Nov 7, 2023
Google ScholarTM
Check
Altmetric
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.