Negative magnetoresistance in boron-doped nanocrystalline diamond films

B. L. Willems; G. Zhang; J. Vanacken; V. V. Moshchalkov; S. D. Janssens; O. A. Williams; K. Haenen; P. Wagner

doi:10.1063/1.3195045

Negative magnetoresistance in boron-doped nanocrystalline diamond films

B. L. Willems
, G. Zhang
, J. Vanacken
, V. V. Moshchalkov
, S. D. Janssens
, O. A. Williams
, K. Haenen
, P. Wagner

Katholieke Universiteit Leuven
Hasselt University

Research output: Contribution to journal › Article › peer-review

11 Scopus citations

Abstract

We report on the observation of a negative magnetoresistance (NMR) regime in boron-doped nanocrystalline diamond films at low temperatures. A comparative analysis of our experimental results and those reported for systems composed of superconducting granules embedded in an insulating matrix (also referred as granular films) suggest the presence of superconducting regions inside the insulating films as causing the NMR. By considering the latter scenario, the experimental observations are explained by modeling the systems as consisting of a distribution of superconducting granules whose global properties are tuned by the intergrain distance.

Original language	English
Article number	033711
Journal	Journal of Applied Physics
Volume	106
Issue number	3
DOIs	https://doi.org/10.1063/1.3195045
State	Published - 2009
Externally published	Yes

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title = "Negative magnetoresistance in boron-doped nanocrystalline diamond films",

abstract = "We report on the observation of a negative magnetoresistance (NMR) regime in boron-doped nanocrystalline diamond films at low temperatures. A comparative analysis of our experimental results and those reported for systems composed of superconducting granules embedded in an insulating matrix (also referred as granular films) suggest the presence of superconducting regions inside the insulating films as causing the NMR. By considering the latter scenario, the experimental observations are explained by modeling the systems as consisting of a distribution of superconducting granules whose global properties are tuned by the intergrain distance.",

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T1 - Negative magnetoresistance in boron-doped nanocrystalline diamond films

AU - Willems, B. L.

AU - Zhang, G.

AU - Vanacken, J.

AU - Moshchalkov, V. V.

AU - Janssens, S. D.

AU - Williams, O. A.

AU - Haenen, K.

AU - Wagner, P.

PY - 2009

Y1 - 2009

N2 - We report on the observation of a negative magnetoresistance (NMR) regime in boron-doped nanocrystalline diamond films at low temperatures. A comparative analysis of our experimental results and those reported for systems composed of superconducting granules embedded in an insulating matrix (also referred as granular films) suggest the presence of superconducting regions inside the insulating films as causing the NMR. By considering the latter scenario, the experimental observations are explained by modeling the systems as consisting of a distribution of superconducting granules whose global properties are tuned by the intergrain distance.

AB - We report on the observation of a negative magnetoresistance (NMR) regime in boron-doped nanocrystalline diamond films at low temperatures. A comparative analysis of our experimental results and those reported for systems composed of superconducting granules embedded in an insulating matrix (also referred as granular films) suggest the presence of superconducting regions inside the insulating films as causing the NMR. By considering the latter scenario, the experimental observations are explained by modeling the systems as consisting of a distribution of superconducting granules whose global properties are tuned by the intergrain distance.

UR - https://www.scopus.com/pages/publications/69149109895

U2 - 10.1063/1.3195045

DO - 10.1063/1.3195045

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VL - 106

JO - Journal of Applied Physics

JF - Journal of Applied Physics

IS - 3

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ER -

Negative magnetoresistance in boron-doped nanocrystalline diamond films

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