EVIDENCE FOR QUASIBOUND STATES IN A KONDO SUPERCONDUCTOR

被引：20
作者：
EDELSTEIN, AS
机构：
[1] IBM Watson Research Center, Yorktown Heights
[2] Department of Physics, University of Illinois, Chicago, IL 60680, Chicago Circle
来源：
PHYSICAL REVIEW | 1969年 / 180卷 / 02期
关键词：
D O I：
10.1103/PhysRev.180.505
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
Contrary to the predictions of the Abrikosov-Gor'kov theory, it is found that a Kondo superconductor (Ce in La) is gapless even at very low concentrations and temperatures. At low impurity (Ce) concentrations in La, the number of states in the gap as determined from electron tunneling measurements is proportional to the Ce concentration. These states are likely to be quasibound states which result from electron scattering from the impurities. © 1969 The American Physical Society.
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页码：505 / +
页数：1
相关论文
共 19 条
[1]  
Abrikosov A A, 1960, ZH EKSP TEOR FIZ, V39, P1781
[2]  
ABRIKOSOV AA, 1961, SOV PHYS JETP-USSR, V12, P1243
[3]   TRANSITION TEMPERATURE OF SUPERCONDUCTORS WITH PARAMAGNETIC IMPURITIES [J].
CROW, JE ;
PARKS, RD .
PHYSICS LETTERS, 1966, 21 (04) :378-&
[4]   ANOMALOUS GAPLESS SUPERCONDUCTIVITY DUE TO SCATTERING FROM LOCALIZED NONINTERACTING SPINS [J].
EDELSTEIN, AS .
PHYSICAL REVIEW LETTERS, 1967, 19 (20) :1184-+
[5]   OBSERVATION OF A KONDO EFFECT IN A CONCENTRATED SYSTEM [J].
EDELSTEIN, AS .
PHYSICS LETTERS A, 1968, A 27 (09) :614-+
[6]   SPIN COMPENSATION IN AN ELEMENT CERIUM [J].
EDELSTEIN, AS .
PHYSICAL REVIEW LETTERS, 1968, 20 (24) :1348-+
[7]   ELECTRON-TUNNELING MEASUREMENTS ON LANTHANUM AND LANTHANUM-LUTETIUM ALLOY FILMS [J].
EDELSTEIN, AS .
PHYSICAL REVIEW, 1967, 164 (02) :510-+
[8]   CONDITIONS FOR BOUND STATES IN A SUPERCONDUCTOR WITH A MAGNETIC IMPURITY [J].
FOWLER, M ;
MAKI, K .
PHYSICAL REVIEW, 1967, 164 (02) :484-&
[9]   EFFECT OF SUHL-ABRIKOSOV RESONANCE OF TRANSITION TEMPERATURE OF SUPERCONDUCTORS [J].
GRIFFIN, A .
PHYSICAL REVIEW LETTERS, 1965, 15 (17) :703-&
[10]   GROUND STATE OF A SUPERCONDUCTOR WITH A SINGLE MAGNETIC IMPURITY [J].
HONE, D .
SOLID STATE COMMUNICATIONS, 1967, 5 (09) :705-&
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