Magnetoconductance modulations due to interlayer tunneling in radial superlattices

• URL: http://arxiv.org/abs/2104.11903v2
• Date: Thu, 9 Dec 2021 08:34:57 GMT
• Title: Magnetoconductance modulations due to interlayer tunneling in radial superlattices
• Authors: Yu-Jie Zhong, Angus Huang, Hui Liu, Xuan-Fu Huang, Horng-Tay Jeng, Jhih-Shih You, Carmine Ortix, and Ching-Hao Chang
• Abstract summary: Radial superlattices are nanostructured materials obtained by rolling-up thin solid films into spiral-like tubular structures. We show the appearance of magnetoconductance modulations in the presence of externally applied axial magnetic fields.
• Score: 4.4591512870240235
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Radial superlattices are nanostructured materials obtained by rolling-up thin solid films into spiral-like tubular structures. The formation of these "high-order" superlattices from two-dimensional crystals or ultrathin films is expected to result in a transition of transport characteristics from two-dimensional to one-dimensional. Here, we show that a transport hallmark of radial superlattices is the appearance of magnetoconductance modulations in the presence of externally applied axial magnetic fields. This phenomenon critically relies on electronic interlayer tunneling processes that activates an unconventional Aharonov-Bohm-like effect. Using a combination of density functional theory calculations and low-energy continuum models, we determine the electronic states of a paradigmatic single-material radial superlattice -- a two-winding carbon nanoscroll -- and indeed show momentum-dependent oscillations of the magnetic states in axial configuration, which we demonstrate to be entirely due to hopping between the two windings of the spiral-shaped scroll.

Related papers

• Magnetoresistance oscillations induced by geometry in a two-dimensional quantum ring [0.0]
  We consider a GaAs device having an average radius of $800hspace0.05cmtextnm$ in different regimes of subband occupation at non-zero temperature. We explore how the modified surface affects the Van-Hoove conductance singularities and the magnetoresistance interference patterns resulting from the Aharonov-Bohm oscillations of different frequencies.
  arXiv  Detail & Related papers  (2024-06-21T13:54:40Z)
• Cavity-enhanced superconductivity via band engineering [0.0]
  We consider a two-dimensional electron gas interacting with a quantized cavity mode. We find that the coupling between the electrons and the photons in the cavity enhances the superconducting gap.
  arXiv  Detail & Related papers  (2024-05-14T14:21:02Z)
• Phononic Crystals in Superfluid Thin-Film Helium [49.1574468325115]
  Mechanical excitations in superfluid thin films interact with the optical mode of an optical microresonator by modulation of its effective refractive index. We realize a phononic crystal cavity confining third sound modes in a superfluid helium film to length scales close to the third sound wavelength.
  arXiv  Detail & Related papers  (2024-02-28T11:45:35Z)
• Quantum Interference by Vortex Supercurrents [0.0]
  We analyze the origin of the parabolic background of magnetoresistance oscillations measured in finite-width superconducting mesoscopic rings with input and output stubs and in patterned films. The onset of vortices changes the topology of the superconducting state in a mesoscopic ring in a such a way that the full magnetoresistance dynamics can be interpreted owing to the interference of the constituents of the order parameter induced by both the ring with its doubly-connected topology and the vortex lattice in it.
  arXiv  Detail & Related papers  (2023-05-23T11:27:14Z)
• Control of the Radiative Heat Transfer in a Pair of Rotating Nanostructures [77.34726150561087]
  We investigate the simultaneous transfer of energy and angular momentum in a pair of rotating nanostructures. We demonstrate that, due to the rotation of the nanostructures, the radiative heat transfer between them can be increased, decreased, or even reversed with respect to the transfer that occurs in absence of rotation. This work unravels the unintuitive phenomena arising from the simultaneous transfer of energy and angular momentum in pairs of rotating nanostructures.
  arXiv  Detail & Related papers  (2023-03-02T15:33:50Z)
• Non-volatile Electric Control of Magnetic and Topological Properties of MnBi2Te4 Thin Films [66.02797153096846]
  We propose a mechanism to control the magnetic properties of topological quantum material (TQM) by using magnetoelectric coupling. This mechanism uses a heterostructure of TQM with two-dimensional (2D) ferroelectric material.
  arXiv  Detail & Related papers  (2022-12-29T14:51:05Z)
• Measuring the magnon-photon coupling in shaped ferromagnets: tuning of the resonance frequency [50.591267188664666]
  cavity photons and ferromagnetic spins excitations can exchange information coherently in hybrid architectures. Speed enhancement is usually achieved by optimizing the geometry of the electromagnetic cavity. We show that the geometry of the ferromagnet plays also an important role, by setting the fundamental frequency of the magnonic resonator.
  arXiv  Detail & Related papers  (2022-07-08T11:28:31Z)
• Thermal self-oscillations in monolayer graphene coupled to a superconducting microwave cavity [58.720142291102135]
  We observe thermal self-oscillations in a monolayer graphene flake coupled to superconducting resonator. The experimental observations fit well with theoretical model based on thermal instability. The modelling of the oscillation sidebands provides a method to evaluate electron phonon coupling in disordered graphene sample at low energies.
  arXiv  Detail & Related papers  (2022-05-27T15:38:41Z)
• Two-dimensional quantum motion of a levitated nanosphere [0.0]
  We report on the two-dimensional (2D) dynamics of a levitated nanoparticles in an optical cavity. By rotating the polarization angle of the tweezer beam we tune the system from a one-dimensional (1D) cooling regime. We achieve a strong 2D confinement with thermal occupancy of 3.4 $pm$ 0.4 along the warmest direction and around unity in the one.
  arXiv  Detail & Related papers  (2021-12-21T17:39:49Z)
• Self-consistently renormailzed spin-wave theory of layered ferromagnets on honeycomb lattice [0.0]
  We develop a self-consistently renormalized spin-wave theory, within a mean-field approximation, for the two-dimensional Heisenberg ferromagnet with easy-axis anisotropy. In this method, the magnetization dependence on temperature is found as the solution of the self-consistency equation.
  arXiv  Detail & Related papers  (2021-07-08T19:48:54Z)
• Waveguide Bandgap Engineering with an Array of Superconducting Qubits [101.18253437732933]
  We experimentally study a metamaterial made of eight superconducting transmon qubits with local frequency control. We observe the formation of super- and subradiant states, as well as the emergence of a polaritonic bandgap. The circuit of this work extends experiments with one and two qubits towards a full-blown quantum metamaterial.
  arXiv  Detail & Related papers  (2020-06-05T09:27:53Z)

This list is automatically generated from the titles and abstracts of the papers in this site.

This site does not guarantee the quality of this site (including all information) and is not responsible for any consequences.