FAR-INFRARED SPECTROSCOPY OF THE HIGH-TC SUPERCONDUCTOR YBA2CU3O7-DELTA

被引：51

作者：

GENZEL, L

WITTLIN, A

KUHL, J

MATTAUSCH, H

BAUHOFER, W

SIMON, A

机构：

[1] Max-Planck-Inst fuer, Festkoerperforschung, Stuttgart,, West Ger, Max-Planck-Inst fuer Festkoerperforschung, Stuttgart, West Ger

来源：

SOLID STATE COMMUNICATIONS | 1987年 / 63卷 / 09期

关键词：

BAND STRUCTURE - SPECTROSCOPY; INFRARED; -; Applications; SUPERCONDUCTIVITY;

D O I：

10.1016/0038-1098(87)90898-2

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

We report measurements of the far-infrared reflectivity of polycrystalline samples of YBa//2Cu//3O//7// minus // delta which have their superconducting transition temperatures in the 90 K range. The measurements performed between 300 K and 10 K reveal temperature-dependent structures attributed to optical phonons in the 150 cm** minus **1 - 350 cm** minus **1 range, and excitation of the electrons across the energy gap. Complicated structures make unambiguous fitting with the Mattis-Bardeen theory difficult, but it seems that the energy gap is around 3. 5 KT//c for T VM LS TH T//c. Additionally, our results indicate the possibility of a second gap at an energy corresponding to 5. 4 kT//c.

引用

页码：843 / 846

页数：4

共 15 条

[1] POSSIBLE HIGH-TC SUPERCONDUCTIVITY IN THE BA-LA-CU-O SYSTEM [J].

BEDNORZ, JG ;

MULLER, KA .

ZEITSCHRIFT FUR PHYSIK B-CONDENSED MATTER, 1986, 64 (02) :189-193

[2] THE ENERGY-GAP OF THE HIGH-TC SUPERCONDUCTOR LA1.85SR0.15CUO4 [J].

BONN, DA ;

GREEDAN, JE ;

STAGER, CV ;

TIMUSK, T .

SOLID STATE COMMUNICATIONS, 1987, 62 (06) :383-385

[3] BULK SUPERCONDUCTIVITY AT 91-K IN SINGLE-PHASE OXYGEN-DEFICIENT PEROVSKITE BA2YCU3O9-DELTA [J].

CAVA, RJ ;

BATLOGG, B ;

VANDOVER, RB ;

MURPHY, DW ;

SUNSHINE, S ;

SIEGRIST, T ;

REMEIKA, JP ;

RIETMAN, EA ;

ZAHURAK, S ;

ESPINOSA, GP .

PHYSICAL REVIEW LETTERS, 1987, 58 (16) :1676-1679

[4] HIGH-PRESSURE STUDY OF THE NEW Y-BA-CU-O SUPERCONDUCTING COMPOUND SYSTEM [J].

HOR, PH ;

GAO, L ;

MENG, RL ;

HUANG, ZJ ;

WANG, YQ ;

FORSTER, K ;

VASSILIOUS, J ;

CHU, CW ;

WU, MK ;

ASHBURN, JR ;

TORNG, CJ .

PHYSICAL REVIEW LETTERS, 1987, 58 (09) :911-912

[5] SUPERCONDUCTIVITY ABOVE 90 K IN THE SQUARE-PLANAR COMPOUND SYSTEM ABA2CU3O6+X WITH A = Y, LA, ND, SM, EU, GD, HO, ER, AND LU [J].

HOR, PH ;

MENG, RL ;

WANG, YQ ;

GAO, L ;

HUANG, ZJ ;

BECHTOLD, J ;

FORSTER, K ;

CHU, CW .

PHYSICAL REVIEW LETTERS, 1987, 58 (18) :1891-1894

[6]

KIRTLEY JR, UNPUB PHYS REV B

[7] NEW SUPERCONDUCTING CUPRATE PEROVSKITES [J].

MURPHY, DW ;

SUNSHINE, S ;

VANDOVER, RB ;

CAVA, RJ ;

BATLOGG, B ;

ZAHURAK, SM ;

SCHNEEMEYER, LF .

PHYSICAL REVIEW LETTERS, 1987, 58 (18) :1888-1890

[8] UPPER CRITICAL FIELDS OF HIGH-TC SUPERCONDUCTING Y2-XBAXCUO4-Y [J].

ORLANDO, TP ;

DELIN, KA ;

FONER, S ;

MCNIFF, EJ ;

TARASCON, JM ;

GREENE, LH ;

MCKINNON, WR ;

HULL, GW .

PHYSICAL REVIEW B, 1987, 35 (13) :7249-7251

[9] FAR-INFRARED ENERGY GAP MEASUREMENTS IN BULK SUPERCONDUCTING IN, SN, HG, TA, V, PB, AND NB [J].

RICHARDS, PL ;

TINKHAM, M .

PHYSICAL REVIEW, 1960, 119 (02) :575-590

[10] FAR-INFRARED MEASUREMENT OF THE ENERGY-GAP OF LA1.8SR0.2CUO4 [J].

SCHLESINGER, Z ;

GREENE, RL ;

BEDNORZ, JG ;

MULLER, KA .

PHYSICAL REVIEW B, 1987, 35 (10) :5334-5336

← 1 2 →