Benchmarking noise and dephasing in emerging electrical materials for quantum technologies

S Islam, S Shamim, A Ghosh - Advanced Materials, 2023 - Wiley Online Library
As quantum technologies develop, a specific class of electrically conducting materials is
rapidly gaining interest because they not only form the core quantum‐enabled elements in …

Proximity-induced superconductivity in epitaxial topological insulator/graphene/gallium heterostructures

C Li, YF Zhao, A Vera, O Lesser, H Yi, S Kumari… - Nature Materials, 2023 - nature.com
The introduction of superconductivity to the Dirac surface states of a topological insulator
leads to a topological superconductor, which may support topological quantum computing …

1 / f noise in van der Waals materials and hybrids

P Karnatak, T Paul, S Islam, A Ghosh - Advances in Physics: X, 2017 - Taylor & Francis
The weak interlayer coupling in van der Waals solids allows isolation of individual atomic or
molecular layers with remarkable electrical, optical, and structural properties. The …

Sb2Te3 nanosheets: Topological insulators with extraordinary electromagnetic response behaviors

XY Chen, J Zhang, KR Du, Q Xie, ZL Hou - Chemical Engineering Journal, 2021 - Elsevier
Topological insulators exhibit a new variety of unusual phenomena associated with
topologically protected gapless surface states. Interestingly, most topological insulators are …

Phonons in the 1/f noise of topological insulators

M Mihaila, S Dinulescu, P Varasteanu - Applied Physics Letters, 2023 - pubs.aip.org
In topological insulators, such as (Bi, Sb) 2Te3 and BiSbTeSe1. 6, the 1/f noise intensity
features intriguing peaks, which develop at some specific temperatures. In search for their …

Nanoscale mapping of edge-state conductivity and charge-trap activity in topological insulators

S Shekhar, Y Oh, JY Jeong, Y Choi, D Cho… - Materials …, 2023 - pubs.rsc.org
We report the nanoscale mapping of topological edge-state conductivity and the effects of
charge-traps on conductivity in a Bi2Se3 multilayer film under ambient conditions. In this …

Layered topological insulators and semimetals for magnetoresistance type sensors

M Zhang, X Wang, F Song… - Advanced Quantum …, 2019 - Wiley Online Library
Magnetoresistance (MR) type sensors are transducers that can vary their resistances
sensitively in response to an applied magnetic field. Recently, topological quantum …

Bulk-impurity induced noise in large-area epitaxial thin films of topological insulators

S Islam, S Bhattacharyya, A Kandala… - Applied Physics …, 2017 - pubs.aip.org
We report a detailed study on low-frequency 1/f-noise in large-area molecular-beam epitaxy
grown thin (⁠∼ 10 nm) films of topological insulators as a function of temperature, gate …

Resistance fluctuation spectroscopy of thin films of 3D topological insulator BiSbTeSe1. 6

S Biswas, RK Gopal, S Singh, R Kant, C Mitra… - Applied Physics …, 2019 - pubs.aip.org
Despite several years of studies, the origin of slow-kinetics of charge-carriers at the surface-
states of strong topological insulators remains abstruse. In this article, we report on studies …

Image of the phonon spectrum in the 1/f noise of topological insulators

M Mihaila, S Dinulescu, P Varasteanu - arXiv preprint arXiv:2111.03525, 2021 - arxiv.org
As reported recently, the 1/f noise intensity in both (Bi, Sb) 2Te3 [Islam et al., Appl. Phys. Lett.
111, 062107 (2017)] and BiSbTeSe1. 6 [Biswas et al., Appl. Phys. Lett. 115, 131601 (2019)] …