Experimental evidence for a surface distribution of two-level systems in superconducting lithographed microwave resonators

被引：282

作者：

Gao, Jiansong ^{[1
]}

Daal, Miguel ^{[2
]}

Vayonakis, Anastasios ^{[1
]}

Kumar, Shwetank ^{[1
]}

Zmuidzinas, Jonas ^{[1
]}

Sadoulet, Bernard ^{[2
]}

Mazin, Benjamin A. ^{[3
]}

Day, Peter K. ^{[3
]}

Leduc, Henry G. ^{[3
]}

机构：

[1] CALTECH, Div Phys Math & Astron, Pasadena, CA 91125 USA

[2] Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA

[3] CALTECH, Jet Prop Lab, Pasadena, CA 91109 USA

来源：

APPLIED PHYSICS LETTERS | 2008年 / 92卷 / 15期

关键词：

D O I：

10.1063/1.2906373

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We present measurements of the temperature-dependent frequency shift of five niobium superconducting coplanar waveguide microresonators with center strip widths ranging from 3 to 50 mu m, taken at temperatures in the range of 100-800 mK, far below the 9.2 K transition temperature of niobium. These data agree well with the two-level system (TLS) theory. Fits to this theory provide information on the number of TLSs that interact with each resonator geometry. The geometrical scaling indicates a surface distribution of TLSs and the data are consistent with a TLS surface layer thickness of the order of a few nanometers, as might be expected for a native oxide layer. (c) 2008 American Institute of Physics.

引用

页数：3

共 21 条

[1] ANOMALOUS LOW-TEMPERATURE THERMAL PROPERTIES OF GLASSES AND SPIN GLASSES [J].

ANDERSON, PW ;

HALPERIN, BI ;

VARMA, CM .

PHILOSOPHICAL MAGAZINE, 1972, 25 (01) :1-&

[2] Niobium and tantalum high Q resonators for photon detectors [J].

Barends, R. ;

Baselmans, J. J. A. ;

Hovenier, J. N. ;

Gao, J. R. ;

Yates, S. J. C. ;

Klapwijk, T. M. ;

Hoevers, H. F. C. .

IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY, 2007, 17 (02) :263-266

[3] Noise and sensitivity of aluminum kinetic inductance detectors for sub-mm astronomy [J].

Baselmans, J. ;

Yates, S. J. C. ;

Barends, R. ;

Lankwarden, Y. J. Y. ;

Gao, J. R. ;

Hoevers, H. ;

Klapwijk, T. M. .

JOURNAL OF LOW TEMPERATURE PHYSICS, 2008, 151 (1-2) :524-529

[4] A broadband superconducting detector suitable for use in large arrays [J].

Day, PK ;

LeDuc, HG ;

Mazin, BA ;

Vayonakis, A ;

Zmuidzinas, J .

NATURE, 2003, 425 (6960) :817-821

[5] Experimental study of the kinetic inductance fraction of superconducting coplanar waveguide [J].

Gao, J ;

Zmuidzinas, J ;

Mazin, BA ;

Day, PK ;

Leduc, HG .

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 2006, 559 (02) :585-587

[6]

GAO J, ARXIV08040467, P25310

[7] Noise properties of superconducting coplanar waveguide microwave resonators [J].

Gao, Jiansong ;

Zmuidzinas, Jonas ;

Mazin, Benjamin A. ;

LeDuc, Henry G. ;

Day, Peter K. .

APPLIED PHYSICS LETTERS, 2007, 90 (10)

[8] Recent results of a new microwave SQUID multiplexer [J].

Hahn, I. ;

Day, P. ;

Bumble, B. ;

LeDuc, H. G. .

JOURNAL OF LOW TEMPERATURE PHYSICS, 2008, 151 (3-4) :934-939

[9]

KUMAR S, 2006, APS MARCH M ABSTR, P25310

[10] Temperature dependence of the frequency and noise of superconducting coplanar waveguide resonators [J].

Kumar, Shwetank ;

Gao, Jiansong ;

Zmuidzinas, Jonas ;

Mazin, Benjamin A. ;

LeDuc, Henry G. ;

Day, Peter K. .

APPLIED PHYSICS LETTERS, 2008, 92 (12)

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