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.

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页码：3860 / 3863

页数：4

相关论文

共 28 条

[1] THEORY OF THERMAL RELAXATION OF ELECTRONS IN METALS [J].

ALLEN, PB .

PHYSICAL REVIEW LETTERS, 1987, 59 (13) :1460-1463

[2] OPTICAL-PROPERTIES OF SUPERCONDUCTING Y-BA-CU-O [J].

BJORNEKLETT, A ;

BORG, A ;

HUNDERI, O .

PHYSICA A, 1989, 157 (01) :164-170

[3] FEMTOSECOND ROOM-TEMPERATURE MEASUREMENT OF THE ELECTRON-PHONON COUPLING CONSTANT-LAMBDA IN METALLIC SUPERCONDUCTORS [J].

BRORSON, SD ;

KAZEROONIAN, A ;

MOODERA, JS ;

FACE, DW ;

CHENG, TK ;

IPPEN, EP ;

DRESSELHAUS, MS ;

DRESSELHAUS, G .

PHYSICAL REVIEW LETTERS, 1990, 64 (18) :2172-2175

[4] FEMTOSECOND THERMOMODULATION STUDY OF HIGH-TC SUPERCONDUCTORS [J].

BRORSON, SD ;

KAZEROONIAN, A ;

FACE, DW ;

CHENG, TK ;

DOLL, GL ;

DRESSELHAUS, MS ;

DRESSELHAUS, G ;

IPPEN, EP ;

VENKATESAN, T ;

WU, XD ;

INAM, A .

SOLID STATE COMMUNICATIONS, 1990, 74 (12) :1305-1308

[5]

BRORSON SD, 1990, ULTRAFAST PHENOMENA, V7, P354

[6]

CHWALEC JM, 1990, APPL PHYS LETT, V58, P980

[7] FEMTOSECOND OPTICAL-ABSORPTION STUDIES OF NONEQUILIBRIUM ELECTRONIC PROCESSES IN HIGH-TC SUPERCONDUCTORS [J].

CHWALEK, JM ;

UHER, C ;

WHITAKER, JF ;

MOUROU, GA ;

AGOSTINELLI, J ;

LELENTAL, M .

APPLIED PHYSICS LETTERS, 1990, 57 (16) :1696-1698

[8] INFRARED EVIDENCE FOR GAP ANISOTROPY IN YBA2CU3O7 [J].

COLLINS, RT ;

SCHLESINGER, Z ;

HOLTZBERG, F ;

FEILD, C .

PHYSICAL REVIEW LETTERS, 1989, 63 (04) :422-425

[9] GENERATION OF NONEQUILIBRIUM ELECTRON AND LATTICE TEMPERATURES IN COPPER BY PICOSECOND LASER-PULSES [J].

EESLEY, GL .

PHYSICAL REVIEW B, 1986, 33 (04) :2144-2151

[10] RELAXATION-TIME OF THE ORDER PARAMETER IN A HIGH-TEMPERATURE SUPERCONDUCTOR [J].

EESLEY, GL ;

HEREMANS, J ;

MEYER, MS ;

DOLL, GL ;

LIOU, SH .

PHYSICAL REVIEW LETTERS, 1990, 65 (27) :3445-3448