Publications (10)
Energy gap and London penetration depth of MgB_2 films determined by microwave resonator measurement
N. Klein, B. B. Jin, J. Schubert +5
We have measured the temperature dependence of the microwave surface impedance Z_s = R_s + iΩμ_0 of a MgB2 film at a frequency Ω/2Î of 18 GHz employing a dielectric resonator te…
Correlation of microwave surface impedance of MgB_2 thin film with material parameters and a temperature niche for microwave applications
B. B. Jin, T. Dahm, C. Iniotakis +11
Two issues related to the microwave surface impedance Z_s of MgB_2 thin film are discussed in this Letter, both being significant for potential microwave applications. At first, a…
Anomalous microwave conductivity coherence peak in c-axis MgB2 thin film
B. B. Jin, T. Dahm, A. I. Gubin +5
The temperature dependence of the real part of the microwave complex conductivity at 17.9 GHz obtained from surface impedance measurements of two c-axis oriented MgB2 thin films re…
MOA-2010-BLG-311: A planetary candidate below the threshold of reliable detection
J. C. Yee, L. -W. Hung, I. A. Bond +123
We analyze MOA-2010-BLG-311, a high magnification (A_max>600) microlensing event with complete data coverage over the peak, making it very sensitive to planetary signals. We fit th…
Metallic multilayers for X-band Bragg reflector applications
A. P. Mihai, M. Adabi, W. Liu +3
We present a structural and high frequency (8.72GHz) electrical characterization of sputter deposited Ti/W, Ti/Ru and Mo/Ti metallic multilayers for potential application as acoust…
Red noise versus planetary interpretations in the microlensing event OGLE-2013-BLG-446
E. Bachelet, D. M. Bramich, C. Han +98
For all exoplanet candidates, the reliability of a claimed detection needs to be assessed through a careful study of systematic errors in the data to minimize the false positives r…
MOA-2010-BLG-073L: An M-Dwarf with a Substellar Companion at the Planet/Brown Dwarf Boundary
R. A. Street, J. -Y. Choi, Y. Tsapras +129
We present an analysis of the anomalous microlensing event, MOA-2010-BLG-073, announced by the Microlensing Observations in Astrophysics survey on 2010-03-18. This event was remark…
MOA-2010-BLG-477Lb: constraining the mass of a microlensing planet from microlensing parallax, orbital motion and detection of blended light
E. Bachelet, I. -G. Shin, C. Han +138
Microlensing detections of cool planets are important for the construction of an unbiased sample to estimate the frequency of planets beyond the snow line, which is where giant pla…
Raman spectroscopy of (K,Na)NbO3 and ((K,Na)1-xLix)NbO3
H. J. Trodahl, N. Klein, D. Damjanovic +4
A Raman scattering spectroscopy study is reported through all four phases of a (K0.5Na0.5)NbO3 crystal and ((K0.5Na0.5)1-xLix)NbO3 for x=0.02 and 0.03. The transitions among the fe…
Energy gap, penetration depth and surface resistance of MgB2 thin films determined by microwave resonator mesurements
B. B. Jin, N. Klein, W. N. Kang +3
We have measured the temperature dependence of the microwave surface impedance Zs = Rs + iΩμ_0 \Lamda of two c-axis oriented MgB2 films at a frequency Ω/(2Ï) of 17.9 GHz employ…