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We investigate the effect of elastic strain on a Mach-Zehnder (MZ) interferometer created by graphene p-n junction in quantum Hall regime. We demonstrate that a Gaussian-shaped nanobubble causes detuning of the quantum Hall conductance…

Mesoscale and Nanoscale Physics · Physics 2024-07-30 Nojoon Myoung , Taegeun Song , Hee Chul Park

The dynamics of the one-dimensional array of the single-walled carbon nanotubes, which interact by van der Waals forces, is considered. The molecular dynamics simulation shows that both the mutual displacements of the nanotubes and the…

Mesoscale and Nanoscale Physics · Physics 2022-09-07 Valeri V. Smirnov

We investigate the electrical properties of nominally undoped, 10-40-nm-thick ScN(111) layers grown on nearly lattice-matched GaN:Fe/Al$_2$O$_3$(0001) templates by plasma-assisted molecular beam epitaxy. Hall-effect measurements yield…

Applied Physics · Physics 2023-12-14 Duc V. Dinh , Oliver Brandt

We obtain quantitative measurements of the oscillation amplitude of vibrating objects by using sideband digital holography. The frequency sidebands on the light scattered by the object, shifted by n times the vibration frequency, are…

Optics · Physics 2009-03-13 Fadwa Joud , Franck Laloë , Michael Atlan , Jean Hare , Michel Gross

The coupling of atomic vibrations to electronic excitations - traditionally understood to be a source of energy loss in semiconductors - has recently been explored in photosynthetic light harvesting as a means to circumvent dissipation by…

Materials Science · Physics 2026-02-04 Yifan Liu , Robert Dawson , Nathaniel Gabor , Vivek Aji

We report on the detection of diffraction gratings buried below a stack of tens of 18 nm thick $\mathrm{SiO_2}$ and $\mathrm{Si_3N_4}$ layers and an optically opaque metal layer, using laser-induced, extremely-high frequency ultrasound. In…

We present a new measurement method which can be used to image gap nodal structure of superconductors whose pairing symmetry is under debate. This technique utilizes a high quality factor microwave resonance involving the sample of…

It is demonstrated that velocity selective optical pumping/saturation resonances of reduced absorption in a Rb vapor nanocell with thickness \textit{L=} $\lambda $, 2$\lambda $, and 3$\lambda $ (resonant wavelength $\lambda $ = 780 nm)…

Classical Physics · Physics 2009-11-13 A. Sargsyan , D. Sarkisyan , A. Papoyan , Y. Pashayan-Leroy , P. Moroshkin , A. Weis , A. Khanbekyan , E. Mariotti , L. Moi

In this paper, a plasmonic absorber consisting of a metal-dielectric-metal stack with a top layer of Sierpinski nanocarpet is theoretically investigated. Such compact absorber depicts broadband angle-independent behavior over a wide optical…

Optics · Physics 2016-06-01 Ali Eshaghian , Sajjad AbdollahRamezani , Ata Chizari , Amin Khavasi

In this letter we explore, both experimentally and theoretically, the existence in the millimeter wave range of the phenomenon of extraordinary light transmission though arrays of subwavelength holes. We have measured the transmission…

Materials Science · Physics 2009-11-10 M. Beruete , M. Sorolla , I. Campillo , J. S. Dolado , L. Martin-Moreno , J. Bravo-Abad , F. J. Garcia-Vidal

Vibrations in cryocoolers are a recurrent concern to the end user. They appear in different parts of the acoustic spectrum depending on the refrigerator type, Gifford McMahon or pulse-tube, and with a variable coupling strength to the…

Instrumentation and Detectors · Physics 2019-04-05 Anne Louchet-Chauvet , Rose Ahlefeldt , Thierry Chanelière

We present FDTD calculations for transmission of light and other electromagnetic waves through periodic arrays of slits in a metallic slab. The results show resonant, frequency dependent, transmittance peaks for subwavelength widths of the…

Mesoscale and Nanoscale Physics · Physics 2009-11-13 N. Garcia , M. Nieto-Vesperinas

By applying an unrestriced Hartree-Fock approximation and a Random Phase approximation to multiband Peierls-Hubbard Hamiltonians, we determine the phonon mode structure in models of transition metal oxides in the presence of intrinsic…

Strongly Correlated Electrons · Physics 2009-09-29 I. Martin , R. J. McQueeney , A. R. Bishop , Z. G. Yu

Quantum mechanical scattering involving continuum states coupled to a scatterer with a discrete spectrum gives rise to Fano resonances. Here we consider scatterers that possess internal vibrational degrees of freedom in addition to discrete…

Microwave circuit electrodynamics of disordered superconductors is a very active research topic spawning a wide range of experiments and applications. For compact superconducting circuit elements, the transition to an insulating state poses…

As the fields of optical microscopy, semiconductor technology and fundamental science increasingly aim for precision at or below the nanoscale, there is a burgeoning demand for sub-nanometric displacement and position sensing. We show that…

Optics · Physics 2021-11-01 Morgan Facchin , Graham David Bruce , Kishan Dholakia

We investigate the excitation of electrostatic wakefields in metallic nanostructures (nanowires) due to the propagation of a short electron pulse. For that purpose, a dispersive (nonlocal) dielectric response of the system is considered,…

Mesoscale and Nanoscale Physics · Physics 2013-05-20 S. Ali , H. Terças , J. T. Mendonça

We use a cooled Scanning Probe Microscope (SPM) to electron motion in nanoscale devices. The charged tip of the SPM is raster scanned at a constant height above the surface as the conductance of the device is measured. The image charge…

Mesoscale and Nanoscale Physics · Physics 2017-03-08 Sagar Bhandari , Gil-Ho Lee , Philip Kim , Robert M. Westervelt

We study the enhancement of the magneto-optical effect in subdiffraction plasmonic chains. We show that in a periodic chain of the plasmonic nanoparticles embedded in a magneto-optical medium, propagation of a guided mode is accompanied by…

Mesoscale and Nanoscale Physics · Physics 2015-06-17 D. G. Baranov , A. P. Vinogradov , A. A. Lisyansky

Phonon dispersion is widely used to elucidate the vibrational properties of materials. As an emerging technique, momentum-resolved vibrational spectroscopy in scanning transmission electron microscopy (STEM) offers an unparalleled approach…

Materials Science · Physics 2024-06-07 Aowen Li , Paul Zeiger , Zuxian He , Mingquan Xu , Stephen J. Pennycook , Ján Rusz , Wu Zhou
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