Factors Affecting Extreme Ultraviolet Reflectivity of Mo/Si Multilayer Films Synthesized by Superconducting Magnetron Sputtering

Abstract

Two-dimensional Maxwell-dilaton quantum gravity on AdS 2 with radius ℓ and a constant electric field E is studied. In conformal gauge, this is equivalent to a CFT on a strip. In order to maintain consistent boundary conditions, the usual conformal diffeomorphisms must be accompanied by a certain U(1) gauge transformation. The resulting conformal transformations are generated by a twisted stress tensor, which has a central charge c = 3kE 2 ℓ 4 /4 where k is the level of the U(1) current. This is an AdS 2 analog of the Brown-Henneaux formula c = 3ℓ/2G for the central charge of quantum gravity on AdS 3 .

Microstructural Characterization of Long-Period Stacking Ordered Phases in Mg97Zn1Y2 (at.%) Alloy

“…Figure 3b is an HR-STEM image of the 18R-LPSO phase and Figure 3c is an FFT-filtered image of Figure 3b, respectively. These demonstrate the heavier Zn and/or Y atoms distributed periodically at two middle layers of FCC units, denoted by BC , AB , and CA , in the 18R-LPSO phase viewing from the ⟨110⟩ LPSO direction (Abe et al, 2002; Ping et al, 2002; Zhu et al, 2009, 2010; Shao et al, 2010), since the intensity Z -contrast STEM image is approximately proportional to Z 2 (the square of atomic number) (Pennycook & Jesson, 1992) or more accurately to Z 1.8 (Mizutani et al, 2009). Thus 18R-LPSO phase consists of two Mg layers alternating with one FCC stacking unit.…”