Ultrafast phase-coherence in normal state of underdoped Bi2Sr2CaCu2O8+δ thin film

被引：3

作者：

Murakami, H ^{[1
]}

Tonouchi, M

Uchiyama, T

Iguchi, I

Wang, Z

机构：

[1] Osaka Univ, Res Ctr Supercond Phytyon, Osaka 5650871, Japan

[2] CREST JST, Osaka 5650871, Japan

[3] Tokyo Inst Technol, Dept Phys, Meguro Ku, Tokyo 1528551, Japan

[4] CREST JST, Meguro Ku, Tokyo 1528551, Japan

[5] Kansai Adv Res Ctr, Commun Res Lab, Kobe, Hyogo 6512492, Japan

来源：

JOURNAL OF SUPERCONDUCTIVITY | 2002年 / 15卷 / 05期

关键词：

terahertz; Bi2Sr2CaCu2O8+delta; pseudogap; relaxation time;

D O I：

10.1023/A:1021066012747

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

A phase-sensitive time-domain terahertz-transmission spectroscopy was carried out on a c-axis oriented underdoped Bi2CaCu2O8+delta thin film. We directly extracted the complex refractive index and conductivity at frequencies from 0.3 to 1.5 THz by numerically solving the observed complex transmittance without Kramers-Kronig analysis. The frequency-resolved real and imaginary part of the conductivity (1.0 THz < f) showed a measurable increase below the characteristic temperature of T* similar to 210 K because of the appearance of partial phase-coherence with an ultrashort lifetime less than about 1 ps.

引用

页码：345 / 350

页数：6

共 19 条

[1] Y-89 NMR EVIDENCE FOR A FERMI-LIQUID BEHAVIOR IN YBA2CU3O6+X [J].

ALLOUL, H ;

OHNO, T ;

MENDELS, P .

PHYSICAL REVIEW LETTERS, 1989, 63 (16) :1700-1703

[2]

Born M., 1975, PRINCIPLES OPTICS

[3] KINETIC INDUCTANCE AND PENETRATION DEPTH OF THIN SUPERCONDUCTING FILMS MEASURED BY THZ-PULSE SPECTROSCOPY [J].

BRORSON, SD ;

BUHLEIER, R ;

WHITE, JO ;

TROFIMOV, IE ;

HABERMEIER, HU ;

KUHL, J .

PHYSICAL REVIEW B, 1994, 49 (09) :6185-6187

[4] FLUCTUATIONS OF ORDER PARAMETER IN TYPE-2 SUPERCONDUCTORS .I. DIRTY LIMIT [J].

CAROLI, C ;

MAKI, K .

PHYSICAL REVIEW, 1967, 159 (02) :306-&

[5] Vanishing of phase coherence in underdoped Bi2Sr2CaCu2O8+δ [J].

Corson, J ;

Mallozzi, R ;

Orenstein, J ;

Eckstein, JN ;

Bozovic, I .

NATURE, 1999, 398 (6724) :221-223

[6] Nodal quasiparticle lifetime in the superconducting state of Bi2Sr2CaCu2O8+δ [J].

Corson, J ;

Orenstein, J ;

Oh, S ;

O'Donnell, J ;

Eckstein, JN .

PHYSICAL REVIEW LETTERS, 2000, 85 (12) :2569-2572

[7] Quantitative test of a microscopic mechanism of high-temperature superconductivity [J].

Demler, E ;

Zhang, SC .

NATURE, 1998, 396 (6713) :733-735

[8] Superconducting gap Δc, the pseudogap Δp, and pair fluctuations above Tc in overdoped Y1-xCaxBa2Cu3O7-δ from femtosecond time-domain spectroscopy [J].

Demsar, J ;

Podobnik, B ;

Kabanov, VV ;

Wolf, T ;

Mihailovic, D .

PHYSICAL REVIEW LETTERS, 1999, 82 (24) :4918-4921

[9] Spectroscopic evidence for a pseudogap in the normal state of underdoped high-T-c superconductors [J].

Ding, H ;

Yokoya, T ;

Campuzano, JC ;

Takahashi, T ;

Randeria, M ;

Norman, MR ;

Mochiku, T ;

Kadowaki, K ;

Giapintzakis, J .

NATURE, 1996, 382 (6586) :51-54

[10] Spin-gap proximity effect mechanism of high-temperature superconductivity [J].

Emery, VJ ;

Kivelson, SA ;

Zachar, O .

PHYSICAL REVIEW B, 1997, 56 (10) :6120-6147

← 1 2 →