Break-junction tunneling spectra of Bi2212 superconducting ceramics: Influence of inhomogeneous d-wave-Cooper-pairing and charge-density-wave order parameters

2020 ◽  
Vol 46 (4) ◽  
pp. 400-413
Author(s):  
Toshikazu Ekino ◽  
Alexander M. Gabovich ◽  
Mai Suan Li ◽  
Henryk Szymczak ◽  
Alexander I. Voitenko
Keyword(s):  
Charge Density ◽  
Charge Density Wave ◽  
Density Wave ◽  
Order Parameters ◽  
Break Junction ◽  
Cooper Pairing ◽  
Superconducting Ceramics ◽  
D Wave

d-wave pairing in the doped static charge-density-wave state on a two-dimensional square lattice

2000 ◽  
Vol 62 (14) ◽  
pp. 9648-9653 ◽  
Author(s):  
Mikio Onozawa ◽  
Yoshiyuki Fukumoto ◽  
Akihide Oguchi ◽  
Yukio Mizuno
Keyword(s):  
Charge Density ◽  
Charge Density Wave ◽  
Density Wave ◽  
Square Lattice ◽  
Two Dimensional ◽  
Static Charge ◽  
Wave State ◽  
Wave Pairing ◽  
D Wave

scholarly journals Dynamics of order parameters near stationary states in superconductors with a charge-density wave

2014 ◽  
Vol 90 (2) ◽  
Author(s):  
Andreas Moor ◽  
Pavel A. Volkov ◽  
Anatoly F. Volkov ◽  
Konstantin B. Efetov
Keyword(s):  
Charge Density ◽  
Charge Density Wave ◽  
Density Wave ◽  
Order Parameters ◽  
Stationary States ◽  
A Charge

Incommensurate modulated phases of the NbxTa1-xTe4 charge density wave system

1992 ◽  
Vol 50 (1) ◽  
pp. 58-59
Author(s):  
S. Ritchie ◽  
J. C. Bennett ◽  
A. Prodan ◽  
F.W. Boswell ◽  
J.M. Corbett
Keyword(s):  
Charge Density ◽  
Charge Density Wave ◽  
Direct Evidence ◽  
Density Wave ◽  
Wave System ◽  
Modulated Phases ◽  
Metal Atoms ◽  
Incommensurate Modulation ◽  
End Members ◽  
Modulation Wave Vector

A continuous sequence of compounds having composition NbxTa1-xTe4; 0 ≤ x ≤ 1 have been studied by electron diffraction and microscopy. Previous studies have shown that the end members of the series, TaTε4 and NbTε4 possess a quasi-one-dimensional character and exhibit charge density wave (CDW) distortions. In these compounds, the subcell structure is tetragonal with axes (a × a × c) and consists of the metal atoms (Nb or Ta) centered within an extended antiprismatic cage of Te atoms. At room temperature, TaTε4 has a commensurate modulation structure with a 2a × 2a × 3c unit cell. In NbTε4, an incommensurate modulation with × ∼ 16c axes is observed. Preliminary studies of the mixed compounds NbxTα1-xTε4 showed a discontinuous jump of the modulation wave vector commensurate to incommensurate when the Nb dopant concentration x, exceeded x ≃ 0.3, In this paper, the nature of the compositional dependence of is studied in greater detail and evidence is presented for a stepwise variation of . This constitutes the first direct evidence for a Devil's staircase in CDW materials.

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