39 research outputs found
Polar vs. nonpolar InGaN/GaN quantum heterostructures: Opposite quantum confined electroabsorption and carrier dynamics behavior
We present a study of quantum confined electroabsorption and carrier dynamics in polar c-plane and nonpolar a-plane InGaN/GaN quantum heterostructures. We demonstrate red-shifting absorption edge, due to quantum confined Stark effect, in nonpolar InGaN/GaN quantum structures in response to increased electric field, while we show the opposite effect with blue-shifting absorption spectra in polar quantum structures. Moreover, confirmed by time-resolved photoluminescence measurements, we prove that carrier lifetimes increase with increasing electric field for nonpolar structures, whereas the opposite occurs for polar ones
On absolute moments of characteristic polynomials of a certain class of complex random matrices
Integer moments of the spectral determinant of complex
random matrices are obtained in terms of the characteristic polynomial of
the Hermitian matrix for the class of matrices where is a
given matrix and is random unitary. This work is motivated by studies of
complex eigenvalues of random matrices and potential applications of the
obtained results in this context are discussed.Comment: 41 page, typos correcte
A CRITICAL COMPARISON OF VARIOUS PROCESSING METHODS FOR YBA2CU3O7-X SUPERCONDUCTOR
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The paradoxical protective effect of hepatic steatosis on severity and functional outcome in patients with first-ever ischaemic stroke or transient ischaemic attack
Relationship Between Damping Capacity and Variations of Vacancies Concentration and Segregation of Carbon Atom in an Fe-Mn Alloy
Developing a framework for university-wide improvement in the training and support of ‘casual’ academics
Inhibition of Notch1 induces population and suppressive activity of regulatory T cell in inflammatory arthritis
10.7150/thno.26093Theranostics8174795-480