FEMTOSECOND SPECTROSCOPY OF YBA2CU3O7-DELTA - ELECTRON-PHONON-INTERACTION MEASUREMENT AND ENERGY-GAP OBSERVATION

被引：84

作者：

CHEKALIN, SV

FARZTDINOV, VM

GOLOVLYOV, VV

LETOKHOV, VS

LOZOVIK, YE

MATVEETS, YA

STEPANOV, AG

机构：

[1] Institute of Spectroscopy, U.S.S.R. Academy of Sciences, 142092 Troitsk, Moscow Region

来源：

PHYSICAL REVIEW LETTERS | 1991年 / 67卷 / 27期

关键词：

D O I：

10.1103/PhysRevLett.67.3860

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The femtosecond dynamics of reflection and transmission spectra of a YBa2Cu3O7-delta film have been studied in the wavelength range 620-680 nm at initial temperatures To both above and below the critical temperature T(c). A difference has been found to exist between the spectral responses for T0 < T(c) and T0 > T(c) which can be attributed to the presence of an energy gap in the spectrum at T0 < T(c). Based on the experimental data, the electron-phonon-interaction parameter-lambda<omega-2> has been estimated as (4 +/- 2) x 10(2) meV2.

引用

页码：3860 / 3863

页数：4

共 28 条

[11]

Eliashberg G. M., 1960, SOV PHYS JETP-USSR, V38, P966

[12]

ELIASHBERG GM, 1960, ZH EKSP TEOR FIZ, V12, P1000

[13]

GERSHENZON ME, 1990, JETP LETT+, V52, P602

[14] FEMTOSECOND OPTICAL-DETECTION OF QUASI-PARTICLE DYNAMICS IN HIGH-TC YBA2CU3O7-DELTA SUPERCONDUCTING THIN-FILMS [J].

HAN, SG ;

VARDENY, ZV ;

WONG, KS ;

SYMKO, OG ;

KOREN, G .

PHYSICAL REVIEW LETTERS, 1990, 65 (21) :2708-2711

[15] HIGH-RESOLUTION PHOTOEMISSION-STUDY OF THE LOW-ENERGY EXCITATIONS REFLECTING THE SUPERCONDUCTING STATE OF BI-SR-CA-CU-O SINGLE-CRYSTALS [J].

IMER, JM ;

PATTHEY, F ;

DARDEL, B ;

SCHNEIDER, WD ;

BAER, Y ;

PETROFF, Y ;

ZETTL, A .

PHYSICAL REVIEW LETTERS, 1989, 62 (03) :336-339

[16] PROBING THE FERMI LEVEL OF Y1-XPRXBA2CU3O7-DELTA BY FEMTOSECOND SPECTROSCOPY [J].

KAZEROONIAN, AS ;

CHENG, TK ;

BRORSON, SD ;

LI, Q ;

IPPEN, EP ;

WU, XD ;

VENKATESAN, T ;

ETEMAD, S ;

DRESSELHAUS, MS ;

DRESSELHAUS, G .

SOLID STATE COMMUNICATIONS, 1991, 78 (02) :95-98

[17]

Krakauer H., 1988, Journal of Superconductivity, V1, P111, DOI 10.1007/BF00617955

[18]

KVAVADZE KA, 1990, SVERHPROVODIMOST FIZ, V3, P1628

[19]

LYUSTERNIK VE, 1990, SVERKHPROVODIMOST FI, V3, P2037

[20]

MAKSIMOV EG, 1990, SOV PHYS USP, V33, P86

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