Quantum effects in the radial thermal expansion of bundles of single-walled carbon nanotubes doped with ⁴He

Quantum effects in the radial thermal expansion of bundles of single-walled carbon nanotubes doped with ⁴He

Dolbin, A.V. ; Esel'son, V.B. ; Gavrilko, V.G. ; Manzhelii, V.G. ; Vinnikov, N.A. ; Popov, S.N.

Тема: Наноструктуры при низких температурах

Інший ID: PACS: 65.80.–g

URI: http://dspace.nbuv.gov.ua/handle/123456789/117369

Посилання: Quantum effects in the radial thermal expansion of bundles of single-walled carbon nanotubes doped with ⁴He / A.V. Dolbin, V.B. Esel'son, V.G. Gavrilko, V.G. Manzhelii, N.A. Vinnikov, S.N. Popov // Физика низких температур. — 2010. — Т. 36, № 7. — С. 797–799. — Бібліогр.: 9 назв. — англ.

Підтримка: The authors are indebted to Prof. A.S. Bakai, Prof. L.A. Pastur and Prof. M.A. Strzhemechny for fruitful discussions and to the Science & Technology Center of Ukraine (STCU) for the financial support of the study (Project # 4266).

Дата: 2010

Завантажень: 459

Quantum effects in the radial thermal expansion of bundles of single-walled carbon nanotubes doped with ⁴He

Анотація:

The radial thermal expansion αr of bundles of single-walled carbon nanotubes saturated with ⁴He impurities to the molar concentration 9.4% has been investigated in the interval 2.5–9.5 K using the dilatometric method. In the interval 2.1–3.7 K α r is negative and is several times higher than the negative αr for pure nanotube bundles. This most likely points to ⁴He atom tunneling between different positions in the nanotube bundle system. The excess expansion was reduced with decreasing ⁴He concentration.

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