Indirect exchange interaction in fully metal-semiconductor separated single-walled carbon nanotubes revealed by electron spin resonance

M. Havlicek; W. Jantsch; Z. Wilamowski; K. Yanagi; H. Kataura; M. H. Rümmeli; H. Malissa; A. Tyryshkin; S. Lyon; A. Chernov; H. Kuzmany

doi:10.1103/PhysRevB.86.045402

Indirect exchange interaction in fully metal-semiconductor separated single-walled carbon nanotubes revealed by electron spin resonance

M. Havlicek, W. Jantsch, Z. Wilamowski, K. Yanagi, H. Kataura, M. H. Rümmeli, H. Malissa, A. Tyryshkin, S. Lyon, A. Chernov, H. Kuzmany

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10 Scopus citations

Abstract

The ESR response from highly metal-semiconductor (M-SC) separated single-walled carbon nanotubes (SWCNTs) for temperatures T between 0.39 and 200 K is characteristically different for the two systems. The signal originates from defect spins but interaction with free electrons leads to a larger linewidth for M tubes. The latter decreases with increasing T, whereas it increases with T for SC tubes. The spins undergo a ferromagnetic phase transition below around 10 K. Indirect exchange is suggested to be responsible for the spin-spin interaction, supported by RKKY interaction in the case of M tubes. For SC tubes, the spin-lattice relaxation via an Orbach process is suggested to determine the linewidth.

Original language	English (US)
Article number	045402
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	86
Issue number	4
DOIs	https://doi.org/10.1103/PhysRevB.86.045402
State	Published - Jul 5 2012

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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10.1103/PhysRevB.86.045402

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Havlicek, M., Jantsch, W., Wilamowski, Z., Yanagi, K., Kataura, H., Rümmeli, M. H., Malissa, H., Tyryshkin, A., Lyon, S., Chernov, A., & Kuzmany, H. (2012). Indirect exchange interaction in fully metal-semiconductor separated single-walled carbon nanotubes revealed by electron spin resonance. Physical Review B - Condensed Matter and Materials Physics, 86(4), Article 045402. https://doi.org/10.1103/PhysRevB.86.045402

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title = "Indirect exchange interaction in fully metal-semiconductor separated single-walled carbon nanotubes revealed by electron spin resonance",

abstract = "The ESR response from highly metal-semiconductor (M-SC) separated single-walled carbon nanotubes (SWCNTs) for temperatures T between 0.39 and 200 K is characteristically different for the two systems. The signal originates from defect spins but interaction with free electrons leads to a larger linewidth for M tubes. The latter decreases with increasing T, whereas it increases with T for SC tubes. The spins undergo a ferromagnetic phase transition below around 10 K. Indirect exchange is suggested to be responsible for the spin-spin interaction, supported by RKKY interaction in the case of M tubes. For SC tubes, the spin-lattice relaxation via an Orbach process is suggested to determine the linewidth.",

author = "M. Havlicek and W. Jantsch and Z. Wilamowski and K. Yanagi and H. Kataura and R{\"u}mmeli, {M. H.} and H. Malissa and A. Tyryshkin and S. Lyon and A. Chernov and H. Kuzmany",

year = "2012",

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doi = "10.1103/PhysRevB.86.045402",

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Havlicek, M, Jantsch, W, Wilamowski, Z, Yanagi, K, Kataura, H, Rümmeli, MH, Malissa, H, Tyryshkin, A, Lyon, S, Chernov, A & Kuzmany, H 2012, 'Indirect exchange interaction in fully metal-semiconductor separated single-walled carbon nanotubes revealed by electron spin resonance', Physical Review B - Condensed Matter and Materials Physics, vol. 86, no. 4, 045402. https://doi.org/10.1103/PhysRevB.86.045402

TY - JOUR

T1 - Indirect exchange interaction in fully metal-semiconductor separated single-walled carbon nanotubes revealed by electron spin resonance

AU - Havlicek, M.

AU - Jantsch, W.

AU - Wilamowski, Z.

AU - Yanagi, K.

AU - Kataura, H.

AU - Rümmeli, M. H.

AU - Malissa, H.

AU - Tyryshkin, A.

AU - Lyon, S.

AU - Chernov, A.

AU - Kuzmany, H.

PY - 2012/7/5

Y1 - 2012/7/5

N2 - The ESR response from highly metal-semiconductor (M-SC) separated single-walled carbon nanotubes (SWCNTs) for temperatures T between 0.39 and 200 K is characteristically different for the two systems. The signal originates from defect spins but interaction with free electrons leads to a larger linewidth for M tubes. The latter decreases with increasing T, whereas it increases with T for SC tubes. The spins undergo a ferromagnetic phase transition below around 10 K. Indirect exchange is suggested to be responsible for the spin-spin interaction, supported by RKKY interaction in the case of M tubes. For SC tubes, the spin-lattice relaxation via an Orbach process is suggested to determine the linewidth.

AB - The ESR response from highly metal-semiconductor (M-SC) separated single-walled carbon nanotubes (SWCNTs) for temperatures T between 0.39 and 200 K is characteristically different for the two systems. The signal originates from defect spins but interaction with free electrons leads to a larger linewidth for M tubes. The latter decreases with increasing T, whereas it increases with T for SC tubes. The spins undergo a ferromagnetic phase transition below around 10 K. Indirect exchange is suggested to be responsible for the spin-spin interaction, supported by RKKY interaction in the case of M tubes. For SC tubes, the spin-lattice relaxation via an Orbach process is suggested to determine the linewidth.

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U2 - 10.1103/PhysRevB.86.045402

DO - 10.1103/PhysRevB.86.045402

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SN - 1098-0121

VL - 86

JO - Physical Review B - Condensed Matter and Materials Physics

JF - Physical Review B - Condensed Matter and Materials Physics

IS - 4

M1 - 045402

ER -

Indirect exchange interaction in fully metal-semiconductor separated single-walled carbon nanotubes revealed by electron spin resonance

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