Performance of a fully superconducting microwave cavity made of the high Tc superconductor Y1Ba2Cu3Oy

Zahopoulos, C.; Kennedy, W. L.; Sridhar, S.
June 1988
Applied Physics Letters;6/20/1988, Vol. 52 Issue 25, p2168
Academic Journal
We report the successful fabrication and characterization of a high Tc superconducting microwave cavity. The cavity made of bulk Y1Ba2Cu3Oy (Tc=93 K) and dielectrically loaded with sapphire was resonant at 8.00 GHz in the TE011 mode. At 77 K the Q was 104, which represents an improvement of a factor of 11 from the normal state. At 4.2 K the Q was nearly 105. The temperature dependence of the Q correlates extremely well with the microwave surface resistance of a test sample measured independently, clearly showing that the Q was limited by the intrinsic materials preparation and not by extraneous factors.


Related Articles

  • Use of high-temperature superconductors for resonators of far-infrared p-germanium lasers. Bespalov, A.V.; Lang, P.T.; Betz, J.; Renk, K.F. // Applied Physics Letters;5/6/1991, Vol. 58 Issue 18, p2030 

    Reports on the use of high-temperature superconductor material for fabricating a resonator of a far-infrared solid-state laser. Active medium consisting of a p-germanium crystal in crossed electric and magnetic fields; Use of a SrTiO[sub 3] plate as a highly reflecting mirror.

  • On intrinsic thermal limitations of superconducting cavities: Kapitza resistance. Amrit, J.; Antoine, C. Z.; Franc¸ois, M. X.; Safa, H. // AIP Conference Proceedings;2002, Vol. 613 Issue 1, p499 

    Thermal behaviour of superconducting niobium cavities is investigated especially focusing on the Kapitza boundary resistance. First systematic measurements of the thermal boundary resistance are performed on samples with well characterised thermal conductivity (RRR values) and surface morphology...

  • Microwave response of thin-film superconductors. Sridhar, S. // Journal of Applied Physics;1/1/1988, Vol. 63 Issue 1, p159 

    Explores the interaction of microwaves with superconductors via extensive measurements of surface resistance and reactance of superconducting tin. Description of cavity resonator and mode geometry; Types of superconducting configurations; Theory of surface impedance of thin films.

  • Resonator power to frequency conversion in a cryogenic sapphire oscillator. Nand, Nitin R.; Parker, Stephen R.; Ivanov, Eugene N.; le Floch, Jean-Michel; Hartnett, John G.; Tobar, Michael E. // Applied Physics Letters;7/22/2013, Vol. 103 Issue 4, p043502 

    We report on the measurement and characterization of power to frequency conversion in the resonant mode of a cryogenic sapphire loaded cavity resonator, which is used as the frequency discriminating element of a loop oscillator circuit. Fluctuations of power incident on the resonator lead to...

  • Novel technique to measure the microwave response of high Tc superconductors between 4.2 and 200 K. Sridhar, S.; Kennedy, W. L. // Review of Scientific Instruments;Apr88, Vol. 59 Issue 4, p531 

    We have devised and implemented a novel technique that has the required sensitivity to enable measurements of the complex surface impedance (Z[sub s]) of high T[sub c] superconducting materials between 4.2 K and at least 200 K. The essential ideal is to employ a superconducting high-Q cavity...

  • Apparatus for measurement of surface resistance versus rf magnetic field of high-Tc superconductors. Delayen, J. R.; Bohn, C. L.; Roche, C. T. // Review of Scientific Instruments;Aug1990, Vol. 61 Issue 8, p2207 

    A coaxial niobium quarter-wave resonant cavity has been fabricated and used for measurement of the surface resistance of disk-shaped samples of high-Tc superconductors at 820 MHz and 4.2 K, and at surface rf magnetic fields ranging to 300 G. The cavity can accommodate samples as large as 36 mm...

  • Electronic Properties of Air‐Sensitive Nanomaterials Probed with Microwave Impedance Measurements. Márkus, Bence G.; Csősz, Gábor; Sági, Olivér; Gyüre‐Garami, Balázs; Lloret, Vicent; Wild, Stefan; Abellán, Gonzalo; Nemes, Norbert M.; Klupp, Gyöngyi; Kamarás, Katalin; Hirsch, Andreas; Hauke, Frank; Simon, Ferenc // Physica Status Solidi (B);Dec2018, Vol. 255 Issue 12, pN.PAG 

    Characterization of electronic properties of novel materials is of great importance for exploratory materials development and also for the discovery of new correlated phases. As several novel compounds are available in powder form only, contactless methods, which also work on air‐sensitive...

  • Superconducting Cavity Resonator With A Metallic Tip For Realizing Strong Coupling Between Superconducting Qubits And Microwave Photons. Kitano, H.; Ota, K.; Maeda, A. // AIP Conference Proceedings;2006, Vol. 850 Issue 1, p943 

    We propose that the insertion of a metallic tip into a superconducting cavity resonator can ensure the strong coupling condition between quantum bits (qubits) and microwave photons, which is a requirement for quantum information processing using cavity quantum electrodynamics (QED). By using a...

  • Study of hybrid photonic band gap resonators for particle accelerators. Masullo, M. R.; Andreone, A.; Di Gennaro, E.; Albanese, S.; Francomacaro, F.; Panniello, M.; Vaccaro, V. G.; Lamura, G. // Microwave & Optical Technology Letters;Dec2006, Vol. 48 Issue 12, p2486 

    One of the main problems in the design of high intensity rf accelerators is the presence of higher order modes (HOMs) which might degrade the beam quality. Accelerating cavities require HOMs suppression, whereas keeping a high quality factor (Q) for the fundamental mode. Both these requirements...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics