OBSERVATION OF A SADDLE-POINT SINGULARITY IN BI-2(SR0.97PR0.03)(2)CUO6+DELTA AND ITS IMPLICATIONS FOR NORMAL AND SUPERCONDUCTING STATE PROPERTIES

被引：200
作者：
KING, DM
SHEN, ZX
DESSAU, DS
MARSHALL, DS
PARK, CH
SPICER, WE
PENG, JL
LI, ZY
GREENE, RL
机构：
[1] STANFORD UNIV,STANFORD ELECTR LABS,STANFORD,CA 94305
[2] STANFORD UNIV,STANFORD SYNCHROTRON RADIAT LAB,STANFORD,CA 94305
[3] STANFORD UNIV,DEPT APPL PHYS,STANFORD,CA 94305
[4] UNIV MARYLAND,DEPT PHYS,CTR SUPERCONDUCT RES,COLLEGE PK,MD 20742
来源：
PHYSICAL REVIEW LETTERS | 1994年 / 73卷 / 24期
关键词：
D O I：
10.1103/PhysRevLett.73.3298
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We have mapped the Fermi surface (FS) of single-crystal Bi(Sr0.97Pr0.03)2CuO6+δ using angle-resolved photoemission. We find an extended saddle point at M̄ which is located very close to or at the Fermi level. This agrees with earlier photoemission data from the cuprates which reveals a striking correspondence between the position of the Fermi level relative to the saddle-point singularity and their normal state properties; however, it does not support the existence of a simple link to a high Tc. We also find that the FS is very strongly nested along the [110] direction. © 1994 The American Physical Society.
引用
收藏
页码：3298 / 3301
页数：4
相关论文
共 24 条
[1]  
ANDERSON OP, UNPUB
[2]   ANOMALOUS SPECTRAL WEIGHT TRANSFER AT THE SUPERCONDUCTING TRANSITION OF BI2SR2CACU2O8+ DELTA - COMMENT [J].
ANDERSON, PW .
PHYSICAL REVIEW LETTERS, 1991, 67 (05) :660-660
[3]   NEUTRON-SCATTERING STUDY OF SPIN FLUCTUATIONS IN SUPERCONDUCTING YBA2CU3O6+0.40, YBA2CU3O6+0.45, YBA2CU3O6+0.50 [J].
CHOU, H ;
TRANQUADA, JM ;
SHIRANE, G ;
MASON, TE ;
BUYERS, WJL ;
SHAMOTO, S ;
SATO, M .
PHYSICAL REVIEW B, 1991, 43 (07) :5554-5563
[4]   KEY FEATURES IN THE MEASURED BAND-STRUCTURE OF BI2SR2CACU2O8+DELTA - FLAT BANDS AT E(F) AND FERMI-SURFACE NESTING [J].
DESSAU, DS ;
SHEN, ZX ;
KING, DM ;
MARSHALL, DS ;
LOMBARDO, LW ;
DICKINSON, PH ;
LOESER, AG ;
DICARLO, J ;
PARK, CH ;
KAPITULNIK, A ;
SPICER, WE .
PHYSICAL REVIEW LETTERS, 1993, 71 (17) :2781-2784
[5]   ON QUASI ONE-DIMENSIONAL OR TWO-DIMENSIONAL SUPERCONDUCTORS [J].
FRIEDEL, J .
JOURNAL DE PHYSIQUE, 1987, 48 (10) :1787-1797
[6]   OCCURRENCE OF VANHOVE SINGULARITIES IN YBA2CU4O8 AND YBA2CU3O6.9 [J].
GOFRON, K ;
CAMPUZANO, JC ;
DING, H ;
GU, C ;
LIU, R ;
DABROWSKI, B ;
VEAL, BW ;
CRAMER, W ;
JENNINGS, G .
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS, 1993, 54 (10) :1193-1198
[7]   RESISTIVITY OF LA1.825SR0.175CUO4 AND YBA2CU3O7 TO 1100-K - ABSENCE OF SATURATION AND ITS IMPLICATIONS [J].
GURVITCH, M ;
FIORY, AT .
PHYSICAL REVIEW LETTERS, 1987, 59 (12) :1337-1340
[8]   ENHANCED SUPERCONDUCTIVITY IN QUASI TWO-DIMENSIONAL SYSTEMS [J].
HIRSCH, JE ;
SCALAPINO, DJ .
PHYSICAL REVIEW LETTERS, 1986, 56 (25) :2732-2735
[9]   FERMI-SURFACE AND ELECTRONIC-STRUCTURE OF ND2-XCEXCUO4-DELTA [J].
KING, DM ;
SHEN, ZX ;
DESSAU, DS ;
WELLS, BO ;
SPICER, WE ;
ARKO, AJ ;
MARSHALL, DS ;
DICARLO, J ;
LOESER, AG ;
PARK, CH ;
RATNER, ER ;
PENG, JL ;
LI, ZY ;
GREENE, RL .
PHYSICAL REVIEW LETTERS, 1993, 70 (20) :3159-3162
[10]   SUPERCONDUCTIVITY IN ALKALINE-EARTH-SUBSTITUTED LA2CUO4 - A THEORETICAL-MODEL [J].
LABBE, J ;
BOK, J .
EUROPHYSICS LETTERS, 1987, 3 (11) :1225-1230
123