Observation of conduction electron spin resonance in boron-doped diamond

Author(s)

Peter Szirmai, Gabor Fabian, Janos Koltai, Balint Nafradi, Laszlo Forro, Thomas Pichler, Oliver A. Williams, Soumen Mandal, Christopher Bäuerle, Ferenc Simon

Abstract

We observe the electron spin resonance of conduction electrons in boron-doped (6400 ppm) superconducting diamond (Tc=3.8K).

We clearly identify the benchmarks of conduction electron spin

resonance (CESR): the nearly temperature independent electron spin

resonance signal intensity and its magnitude, which is in good agreement

with that expected from the density of states through the Pauli spin

susceptibility. The temperature dependent CESR linewidth weakly

increases with increasing temperature, which can be understood in the

framework of the Elliott-Yafet theory of spin relaxation. An anomalous

and yet unexplained relation is observed between the g-factor, CESR linewidth, and the resistivity using the empirical Elliott-Yafet relation.

Organisation(s)

Electronic Properties of Materials

External organisation(s)

École polytechnique fédérale de Lausanne, Budapest University of Technology and Economics, Eötvös Loránd University Budapest, Cardiff University, Institut NÉEL (CNRS), Université Joseph-Fourier (Grenoble-I)

Journal

Physical Review B

Volume

87

No. of pages

5

ISSN

1098-0121

DOI

https://doi.org/10.1103/PhysRevB.87.195132

Publication date

05-2013

Peer reviewed

Yes

Austrian Fields of Science 2012

103020 Surface physics, 103009 Solid state physics, 103018 Materials physics

Keywords

Portal url

https://ucris.univie.ac.at/portal/en/publications/observation-of-conduction-electron-spin-resonance-in-borondoped-diamond(c2a5c3ce-ce3d-47cd-81a0-da294c146adf).html