New Electron-Doped Superconducting Cuprate Li_x_Sr_2_CuO_2_Br_2_

A new electron-doped superconductor Li_x_Sr_2_CuO_2_Br_2_ with x = 0.15 has successfully been synthesized by an electrochemical Li-intercalation technique. The magnetic susceptibility shows superconductivity of bulk with the superconducting transition temperature Tc = 8 K. This compound is the first electron-doped superconducting cuprate with the K_2_NiF_4_ structure.Comment: 9pages, 3figures, accepted for publication in Jpn. J. Appl. Phy

Temes, “A noise-shaping accelerometer interface circuit for two-chip implementation

Abstract {Aproposed third-order noise-shaping accelerometer interface circuit enhances the SNR, compared with the previously presented interface circuits. The solution for the twochip implementation is described and a novel cross-coupled CDS integrator is proposed. This scheme functions even with the large parasitic capacitances between the sensor and the interface circuit. The op-amp noise is rst-order shaped. Dithering circuit is also implemented on the chip, fabricated in AMI 1.6 mCMOSprocess

Temes, “A Two-Chip Interface for a MEMS Accelerometer

Abstract—A proposed third-order noise-shaping accelerometer interface circuit enhances the signal-to-noise ratio, compared with previously presented interface circuits. The solution for the two-chip implementation is described and a novel cross-coupled correlated double sampling integrator is proposed. This scheme functions even with large parasitic capacitances between the sensor and the interface circuit. The op-amp noise is first-order shaped. Dithering circuit is also implemented on the chip, fabricated in an 1.6- m CMOS process. Index Terms—Accelerometer, correlated double sampling (CDS), delta–sigma modulator, dither, sensor interface. I