Observation of conduction electron spin resonance in boron-doped diamond

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

doi:10.1103/PhysRevB.87.195132

Observation of conduction electron spin resonance in boron-doped diamond

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

Electronic Properties of Materials

Publications: Contribution to journal › Article › Peer Reviewed

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.

Original language	English
Article number	195132
Number of pages	5
Journal	Physical Review B
Volume	87
Issue number	19
DOIs	https://doi.org/10.1103/PhysRevB.87.195132
Publication status	Published - 28 May 2013

Funding

Useful discussions with Andras Janossy are acknowledged. This work was supported by ERC Grant No. ERC-259374-Sylo, New Szechenyi Plan No. TAMOP-4.2.2.B-10/1.2010-0009, and Hungarian State Grants (OTKA) No. K81492. The Swiss NSF is acknowledged for support. S.M. and C.B. acknowledge financial support by the French National Agency (ANR) in the frame of its program in "Nanosciences and Nanotechnologies" (SUPERNEMS project ANR-08-PNANO-033).

Austrian Fields of Science 2012

103020 Surface physics
103009 Solid state physics
103018 Materials physics

Keywords

HYDROGEN-RELATED DEFECTS
CVD DIAMOND
SUPERCONDUCTIVITY
METALS
FILMS
RELAXATION
GRAPHENE

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10.1103/PhysRevB.87.195132

http://arxiv.org/abs/1305.2366

Cite this

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title = "Observation of conduction electron spin resonance in boron-doped diamond",

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.",

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T1 - Observation of conduction electron spin resonance in boron-doped diamond

AU - Szirmai, Peter

AU - Fabian, Gabor

AU - Koltai, Janos

AU - Nafradi, Balint

AU - Forro, Laszlo

AU - Pichler, Thomas

AU - Williams, Oliver A.

AU - Mandal, Soumen

AU - Bäuerle, Christopher

AU - Simon, Ferenc

PY - 2013/5/28

Y1 - 2013/5/28

N2 - 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.

AB - 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.

KW - HYDROGEN-RELATED DEFECTS

KW - CVD DIAMOND

KW - SUPERCONDUCTIVITY

KW - METALS

KW - FILMS

KW - RELAXATION

KW - GRAPHENE

U2 - 10.1103/PhysRevB.87.195132

DO - 10.1103/PhysRevB.87.195132

M3 - Article

SN - 1098-0121

VL - 87

JO - Physical Review B

JF - Physical Review B

IS - 19

M1 - 195132

ER -

Observation of conduction electron spin resonance in boron-doped diamond

Abstract

Funding

Austrian Fields of Science 2012

Keywords

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