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Carbon nanotubes continue to be model systems for studies of confinement and interactions. This is particularly true in the case of so-called "ultra-clean" carbon nanotube devices offering the study of quantum dots with extremely low…

We report a giant magnetic moment enhancement of ferromagnetic nickel nanoparticles (11 nm) embedded in multi-walled carbon nanotubes. High-energy synchrotron x-ray diffraction experiment and chemical analysis are used to accurately…

强关联电子 · 物理学 2010-05-04 Guo-meng Zhao , Pieder Beeli , Jun Wang , Yang Ren

The unusual band structure of carbon nanotubes (CNs) results in their remarkable magnetic properties. The application of magnetic field parallel to the tube axis can change the conducting properties of the CN from metallic to semiconducting…

介观与纳米尺度物理 · 物理学 2009-11-11 Magdalena Marganska , Marek Szopa , Elzbieta Zipper

Semiconducting single-wall carbon nanotubes are classified into two types by means of orbital angular momentum of valley state, which is useful to study their low energy electronic properties in finite-length. The classification is given by…

介观与纳米尺度物理 · 物理学 2016-06-08 W. Izumida , R. Okuyama , A. Yamakage , R. Saito

Single-wall carbon nanotubes are almost ideal systems for the investigation of exotic many-body effects due to non-Fermi liquid behavior of interacting electrons in one dimension. Recent theoretical and experimental results are reviewed…

介观与纳米尺度物理 · 物理学 2007-05-23 A. Odintsov , H. Yoshioka

Using a model Hamiltonian approach including electron-electron interactions, we systematically investigate the electronic structure and magnetic properties of chiral graphene nanoribbons. We show that the presence of magnetic edge states is…

介观与纳米尺度物理 · 物理学 2011-09-13 Oleg V. Yazyev , Rodrigo B. Capaz , Steven G. Louie

Low dimensional carbon-based materials are interesting because they can show intrinsic $\pi$-magnetism associated to p-electrons residing in specific open-shell configurations. Consequently, during the last years there have been impressive…

The remarkable transport properties of carbon nanotubes (NTs) are determined by their unique electronic structure (1). The electronic states of a NT form one-dimensional electron and hole subbands which, in general, are separated by an…

介观与纳米尺度物理 · 物理学 2009-11-10 E. D. Minot , Yuval Yaish , Vera Sazonova , Paul L. McEuen

We investigate chiral graphene nanoribbons using projective quantum Monte Carlo simulations within the local Hubbard model description and study the effects of electron-electron interactions on the electronic and magnetic properties at the…

介观与纳米尺度物理 · 物理学 2013-05-07 Michael Golor , Thomas C. Lang , Stefan Wessel

We propose a microscopic model for a nanoelectromechanical system made by a radio-frequency driven suspended carbon nanotube (CNT) in the presence of an external magnetic field perpendicular to the current. As a main result, we show that,…

介观与纳米尺度物理 · 物理学 2015-06-12 A. Nocera , C. A. Perroni , V. Marigliano Ramaglia , G. Cantele , V. Cataudella

A magnetic field, through its vector potential, usually causes measurable changes in the electron wave function only in the direction transverse to the field. Here we demonstrate experimentally and theoretically that in carbon nanotube…

介观与纳米尺度物理 · 物理学 2019-03-08 M. Marganska , D. R. Schmid , A. Dirnaichner , P. L. Stiller , Ch. Strunk , M. Grifoni , A. K. Hüttel

The transport properties of finite nanotubes placed in a magnetic field parallel to their axes are investigated. Upon including spin-orbit coupling and curvature effects, two main phenomena are analyzed which crucially depend on the tube's…

介观与纳米尺度物理 · 物理学 2011-10-28 Miriam del Valle , Magdalena Marganska , Milena Grifoni

We theoretically study the interplay between electrical and mechanical properties of suspended, doubly clamped carbon nanotubes in which charging effects dominate. In this geometry, the capacitance between the nanotube and the gate(s)…

介观与纳米尺度物理 · 物理学 2009-11-07 S. Sapmaz , Ya. M. Blanter , L. Gurevich , H. S. J. van der Zant

Magnetic nanotubes have been widely studied because they are promising candidates to be part in devices based on spintronic and magnonic technologies. However, the experimental techniques used to prepare these elements could not guarantee…

介观与纳米尺度物理 · 物理学 2019-07-15 D. Mancilla-Almonacid , M. A. Castro , J. M. Fonseca , D. Altbir , S. Allende , Vagson L. Carvalho-Santos

The influence of local magnetic moment formation around three kinds of vacancies on the electron conduction through metallic single-wall carbon nanotubes is studied by use of the Landauer formalism within the coherent regime. The method is…

介观与纳米尺度物理 · 物理学 2010-06-18 R. Farghadan , A. Saffarzadeh

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

The authors apply first-principles calculations to investigate the interplay between structural, electronic, and magnetic properties of nanostructures composed of narrow nanotubes filled with metallic nanowires. The focus is on the…

介观与纳米尺度物理 · 物理学 2010-09-06 Eduardo M. Diniz , Ricardo W. Nunes , Hélio Chacham , Mário S. C. Mazzoni

We consider a thin film of $d$-wave altermagnet bent in a stretching-free manner and demonstrate that gradients of the film curvature induce a local magnetization which is approximately tangential to the film. The magnetization amplitude…

We investigate a long-ranged coupled and non-Hermitian two-dimensional array of nanomagnets, fabricated on a thin magnetic substrate and subjected to an in-plane magnetic field. We predict topology-driven edge and corner skin effects of…

介观与纳米尺度物理 · 物理学 2023-09-26 Chengyuan Cai , Dante M. Kennes , Michael A. Sentef , Tao Yu

Edge magnetism in zigzag transition metal dichalcogenide nanoribbons is studied using a three-band tight-binding model with local electron-electron interactions. Both mean field theory and the unbiased, numerically exact determinant quantum…

强关联电子 · 物理学 2022-06-22 Francisco M. O. Brito , Linhu Li , João M. V. P. Lopes , Eduardo V. Castro
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