Microwave electrodynamics of electron-doped cuprate superconductors

被引：112

作者：

Kokales, JD ^{[1
]}

Fournier, P ^{[1
]}

Mercaldo, LV ^{[1
]}

Talanov, VV ^{[1
]}

Greene, RL ^{[1
]}

Anlage, SM ^{[1
]}

机构：

[1] Univ Maryland, Ctr Superconduct Res, Dept Phys, College Pk, MD 20742 USA

来源：

PHYSICAL REVIEW LETTERS | 2000年 / 85卷 / 17期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1103/PhysRevLett.85.3696

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We report microwave cavity perturbation measurements of the temperature dependence of the penetration depth, lambda>(*) over bar * (T), and conductivity, sigma>(*) over bar * (T) of Pr2-xCexCuO4-delta (PCCO) crystals, as well as parallel-plate resonator measurements of A(T) in PCCO thin films. Penetration depth measurements are also presented for a Nd2-xCexCuO4-delta (NCCO) crystal. We find that Deltah(T) has a power-law behavior for T < T-c/3, and conclude that the electron-doped cuprate superconductors have nodes in the superconducting gap. Furthermore, using the surface impedance, we have derived the real part of the conductivity, <sigma>(1)(T), below T-c and found a behavior similar to that observed in hole-doped cuprates.

引用

页码：3696 / 3699

页数：4

共 42 条

[1] STRONG CORRELATION AND EXOTIC SUPERCONDUCTING STATES [J].

ABRAHAMS, E .

JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS, 1992, 53 (12) :1487-1492

[2] Andreev bound states in high temperature superconductors [J].

Alff, L ;

Kleefisch, S ;

Schoop, U ;

Zittartz, M ;

Kemen, T ;

Bauch, T ;

Marx, A ;

Gross, R .

EUROPEAN PHYSICAL JOURNAL B, 1998, 5 (03) :423-438

[3] Anomalous low temperature behavior of superconducting Nd1.85Ce0.15CuO4-y [J].

Alff, L ;

Meyer, S ;

Kleefisch, S ;

Schoop, U ;

Marx, A ;

Sato, H ;

Naito, M ;

Gross, R .

PHYSICAL REVIEW LETTERS, 1999, 83 (13) :2644-2647

[4] TEMPERATURE-DEPENDENCE OF THE PENETRATION DEPTH IN ND1.85CE0.15CUO4-DELTA SUPERCONDUCTING THIN-FILMS [J].

ANDREONE, A ;

CASSINESE, A ;

DICHIARA, A ;

VAGLIO, R ;

GUPTA, A ;

SARNELLI, E .

PHYSICAL REVIEW B, 1994, 49 (09) :6392-6394

[5] Fluctuations in the microwave conductivity of YBa2Cu3O7-delta single crystals in zero dc magnetic field [J].

Anlage, SM ;

Mao, J ;

Booth, JC ;

Wu, DH ;

Peng, JL .

PHYSICAL REVIEW B, 1996, 53 (05) :2792-2796

[6] ELECTRODYNAMICS OF ND1.85CE0.15CUO4 - COMPARISON WITH NB AND YBA2CU3O7-DELTA [J].

ANLAGE, SM ;

WU, DH ;

MAO, J ;

MAO, SN ;

XI, XX ;

VENKATESAN, T ;

PENG, JL ;

GREENE, RL .

PHYSICAL REVIEW B, 1994, 50 (01) :523-535

[7] Constraints on the pairing state of the cuprate superconductors [J].

Annett, JF ;

Goldenfeld, N ;

Leggett, AJ .

JOURNAL OF LOW TEMPERATURE PHYSICS, 1996, 105 (3-4) :473-482

[8] MICROWAVE DETERMINATION OF THE QUASI-PARTICLE SCATTERING TIME IN YBA2CU3O6.95 [J].

BONN, DA ;

LIANG, RX ;

RISEMAN, TM ;

BAAR, DJ ;

MORGAN, DC ;

ZHANG, K ;

DOSANJH, P ;

DUTY, TL ;

MACFARLANE, A ;

MORRIS, GD ;

BREWER, JH ;

HARDY, WN ;

KALLIN, C ;

BERLINSKY, AJ .

PHYSICAL REVIEW B, 1993, 47 (17) :11314-11328

[9] Crystal growth of high-T-c superconductors Pr2-xCexCuO4+delta with substitutions of Ni and Co for Cu [J].

Brinkmann, M ;

Rex, T ;

Bach, H ;

Westerholt, K .

JOURNAL OF CRYSTAL GROWTH, 1996, 163 (04) :369-376

[10] Power-law dependence of the ab-plane penetration depth in Nd1.85Ce0.15CuO4-y [J].

Cooper, JR .

PHYSICAL REVIEW B, 1996, 54 (06) :R3753-R3755

← 1 2 3 4 5 →