32 citations · 140 across the 11 of their papers we have counts for
11 papers
Localized High Frequency Electrodynamic Behavior of Optimally-doped Ba(FeCo)As Single Crystal films
Tamin Tai, Behnood G. Ghamsari, J. H. Kang +3
Localized high frequency (several GHz) electrodynamic properties of a high quality epitaxial, single-crystal Iron-Pnicitde Ba(FeCo)As thin film near optimal dop…
Nanoscale Nonlinear Radio Frequency Properties of Bulk Nb : Origins of Extrinsic Nonlinear Effects
Tamin Tai, B. G. Ghamsari, T. Bieler +1
The performance of Niobium-based Superconducting Radio Frequency (SRF) particle accelerator cavities can be sensitive to localized defects that give rise to quenches at high accele…
Microwave Nonlinearity and Photoresponse of Superconducting Resonators with Columnar Defect Micro-Channels
S. K. Remillard, D. Kirkendall, G. Ghigo +9
Micro-channels of nanosized columnar tracks were planted by heavy-ion irradiation into superconducting microwave microstrip resonators that were patterned from YBa2Cu3O7-x thin fil…
Near-Field Microwave Magnetic Nanoscopy of Superconducting Radio Frequency Cavity Materials
Tamin Tai, Behnood G. Ghamsari, Thomas R. Bieler +3
A localized measurement of the RF critical field on superconducting radio frequency (SRF) cavity materials is a key step to identify specific defects that produce quenches of SRF c…
MgB2 nonlinear properties investigated under localized high rf magnetic field excitation-report 2
Tamin Tai, B. G. Ghamsari, T. Tan +3
The high transition temperature and low surface resistance of MgB2 attracts interest in its potential application in superconducting radio frequency accelerating cavities. However,…
Nanoscale Electrodynamic Response of Nb Superconductors
Tamin Tai, Behnood G. Ghamsari, Steven M. Anlage
Our objective is to study the extreme and local electrodynamic properties of Niobium (Nb), and to relate these properties to specific defects that limit the ultimate RF performance…
High-Temperature Superconducting Multi-Band Radio-Frequency Metamaterial Atoms
Behnood G. Ghamsari, John Abrahams, Steven M. Anlage
We report development and measurement of a micro-fabricated compact high-temperature superconducting (HTS) metamaterial atom operating at a frequency as low as 53MHz. The de…
Determination of the Optical Index for Few-Layer Graphene by Reflectivity Spectroscopy
Behnood G. Ghamsari, Jacob Tosado, Mahito Yamamoto +2
We have experimentally studied the optical refractive index of few-layer graphene through reflection spectroscopy at visible wavelengths. A laser scanning microscope (LSM) with a c…
Imaging the Anisotropic Nonlinear Meissner Effect in Nodal YBaCuO Thin-Film Superconductors
Alexander P. Zhuravel, B. G. Ghamsari, C. Kurter +6
We have directly imaged the anisotropic nonlinear Meissner effect in an unconventional superconductor through the nonlinear electrodynamic response of both (bulk) gap nodes and (su…
Mgb2 Nonlinear Properties Investigated under Localized High RF Magnetic Field Excitation
Tamin Tai, Behnood G. Ghamsari, Steven M. Anlage +2
In order to increase the accelerating gradient of Superconducting Radio Frequency (SRF) cavities, Magnesium Diboride (MgB2) opens up hope because of its high transition temperature…
Ultrafast Linear Kinetic Inductive Photoresponse of YBa2Cu3O7-δ Meander-Line Structures by Photoimpedance Measurements
Haig A. Atikian, Behnood G. Ghamsari, Steven M. Anlage +1
We report the experimental demonstration of linear kinetic-inductive photoresponse of thin-film YBa2Cu3O7-δ (YBCO) meander-line structures, where the photoresponse amplitude, full-…