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Individual metallic single-wall carbon nanotubes show unsual non-Ohmic transport behaviors at high bias fields. For low resistance contact samples, the differential conductance dI/dV increases with increasing bias, reaching a maximum at…

介观与纳米尺度物理 · 物理学 2015-06-04 S. Fujita , H. C. Ho

We investigate the efficiency of cooling the vibrations of a nano-mechanical resonator, constituted by a partially suspended Carbon-nanotube and operating as double-quantum dot. The motion is brought to lower temperatures by tailoring the…

介观与纳米尺度物理 · 物理学 2015-05-18 Stefano Zippilli , Adrian Bachtold , Giovanna Morigi

We describe the interaction of surface acoustic waves with electrons in an array of quantum wires, patterned out of a two dimensional electron gas. Two specific geometries are considered, in which the surface acoustic wave travels parallel,…

凝聚态物理 · 物理学 2009-10-31 Michal Rokni , Y. Levinson

We develop a continuous theory of low-frequency dynamics for single-walled carbon nanotubes (SWCNTs) weakly interacting with the environment. In the frame of the approach proposed we obtain temperature dependence of SWCNTs specific heat in…

介观与纳米尺度物理 · 物理学 2015-05-20 M. V. Avramenko , I. Yu. Golushko , A. E. Myasnikova , S. B. Rochal

In a recent paper Liang {\it et al.} [Nature {\bf 411}, 665 (2001)] showed experimentally, that metallic nanotubes, strongly coupled to external electrodes, may act as coherent molecular waveguides for electronic transport. The experimental…

介观与纳米尺度物理 · 物理学 2009-11-07 S. Krompiewski , J. Martinek , J. Barnas

We probe the high frequency emission of a carbon nanotube based Josephson junction and compare it to its DC Josephson current. The AC emission is probed by coupling the carbon nanotube to an on-chip detector (a…

介观与纳米尺度物理 · 物理学 2021-03-31 D. Watfa , R. Delagrange , A. Kadlecová , M. Ferrier , A. Kasumov , H. Bouchiat , R. Deblock

We investigate the properties of conduction electrons in single-walled armchair carbon nanotubes in the presence of mutually orthogonal electric and magnetic fields transverse to the tube's axis. We find that the fields give rise to an…

介观与纳米尺度物理 · 物理学 2015-05-14 Wade DeGottardi , Tzu-Chieh Wei , Victoria Fernandez , Smitha Vishveshwara

We demonstrate an individual single-walled carbon nanotube light emitter integrated onto a microcavity and a waveguide operating in the telecom wavelength regime. Light emission from the carbon nanotube is enhanced at the cavity resonance…

光学 · 物理学 2021-03-16 D. Yamashita , H. Machiya , K. Otsuka , A. Ishii , Y. K. Kato

In ballistic transport, the movement of charged carriers is essentially unimpeded by scattering events. In this limit, microscopic parameters such as crystal momentum, spin and quantum phases are well conserved, allowing electrons to…

介观与纳米尺度物理 · 物理学 2026-02-17 Yongjin Cho , Su Jae Kim , Min-Hyoung Jung , Yousil Lee , Hu Young Jeong , Young-Min Kim , Hu-Jong Lee , Seong-Gon Kim , Se-Young Jeong , Gil-Ho Lee

We present low-temperature electron transport measurements on a single-wall carbon nanotube quantum dot exhibiting Kondo resonances at low temperature. Contrary to the usual behavior for the spin-1/2 Kondo effect we find that the…

介观与纳米尺度物理 · 物理学 2016-08-31 J. Nygard , W. F. Koehl , N. Mason , L. DiCarlo , C. M. Marcus

In this letter, we demonstrate a strong dependence of the electrostatic deformation of doubly-clamped single-walled carbon nanotubes on both the field strength and the tube length, using molecular simulations. Metallic nanotubes are found…

介观与纳米尺度物理 · 物理学 2015-05-14 Zhao Wang , Laetitia Philippe

Surface Acoustic Waves (SAW) have been utilized to investigate the properties of a two-dimensional electron system, subjected to a perpendicular magnetic field and monochromatic microwave radiation, in the regime where the so-called…

介观与纳米尺度物理 · 物理学 2020-03-25 Benedikt Friess , Ivan A. Dmitriev , Vladimir Umansky , Loren Pfeiffer , Ken West , Klaus von Klitzing , Jurgen H. Smet

We derive an effective low-energy theory for metallic (armchair and non-armchair) single-wall nanotubes in the presence of an electric field perpendicular to the nanotube axis, and in the presence of magnetic fields, taking into account…

介观与纳米尺度物理 · 物理学 2011-11-15 Jelena Klinovaja , Manuel J. Schmidt , Bernd Braunecker , Daniel Loss

We investigate the photoconductance of single-walled carbon nanotube-nanocrystalhybrids. The nanocrystals are bound to the nanotubes via molecular recognition. We find that the photoconductance of the hybrids can be adjusted by the…

介观与纳米尺度物理 · 物理学 2015-05-13 B. Zebli , H. A. Vieyra , I. Carmeli , A. Hartschuh , J. P. Kotthaus , A. W. Holleitner

We calculate the forces acting upon species adsorbed on a single wall carbon nanotube, in the presence of electric currents. We present a self consistent real space Green function method, which enables us to calculate the current induced…

凝聚态物理 · 物理学 2016-08-31 N. Mingo , Liu Yang , Jie Han

Light-sound interactions have long been exploited in various acousto-optic devices based on bulk crystalline materials. Conventionally these devices operate in megahertz frequency range where the acoustic wavelength is much longer than the…

光学 · 物理学 2015-04-06 Semere Ayalew Tadesse , Mo Li

Modelling heat transfer of carbon nanotubes is important for the thermal management of nanotube-based composites and nanoelectronic device. By using a finite element method for three-dimensional anisotropic heat transfer, we have simulated…

材料科学 · 物理学 2015-05-18 Xin-She Yang

Single bundles of carbon nanotubes have been selectively deposited from suspensions onto sub-micron electrodes with alternating electric fields. We explore the resulting contacts using several solvents and delineate the differences between…

介观与纳米尺度物理 · 物理学 2009-11-07 R. Krupke , F. Hennrich , H. B. Weber , D. Beckmann , O. Hampe , S. Malik , M. M. Kappes , H. v. Löhneysen

Simultaneous photoluminescence and photocurrent measurements on individual single-walled carbon nanotubes reveal spontaneous dissociation of excitons into free electron-hole pairs. Correlation of luminescence intensity and photocurrent…

介观与纳米尺度物理 · 物理学 2014-03-19 Y. Kumamoto , M. Yoshida , A. Ishii , A. Yokoyama , T. Shimada , Y. K. Kato

We present a quantum theory of cooling of a mechanical resonator using back-action with constant electron current. The resonator device is based on a doubly clamped nanotube, which mechanically vibrates and acts as a double quantum dot for…

其他凝聚态物理 · 物理学 2009-11-13 Stefano Zippilli , Giovanna Morigi , Adrian Bachtold