scholarly journals Doping-dependent competition between superconductivity and polycrystalline charge density waves

2020 ◽  
Vol 8 (1) ◽  
Author(s):  
Sergio Caprara ◽  
Marco Grilli ◽  
José Lorenzana ◽  
Brigitte Leridon
Keyword(s):  
Magnetic Field ◽  
Charge Density ◽  
Characteristic Temperature ◽  
Density Wave ◽  
Charge Density Waves ◽  
Field Resistance ◽  
Zero Magnetic Field ◽  
Density Waves ◽  
Systematic Analysis ◽  
Experimental Phase Diagram

From systematic analysis of the high pulsed magnetic field resistance data of La_{2-x}2−xSr_xxCuO_{4}4 thin films, we extract an experimental phase diagram for several doping values ranging from the very underdoped to the very overdoped regimes. Our analysis highlights a competition between charge density waves and superconductivity which is ubiquitous between x=0.08x=0.08 and x=0.19x=0.19 and produces the previously observed double step transition. When suppressed by a strong magnetic field, superconductivity is resilient for two specific doping ranges centered around respectively x\approx 0.09x≈0.09 and x\approx 0.19x≈0.19 and the characteristic temperature for the onset of the competing charge density wave phase is found to vanish above x = 0.19x=0.19. At x=1/8x=1/8 the two phases are found to coexist exactly at zero magnetic field.

Epitaxial Growth and Charge Density Wave of TaSe2

1991 ◽  
Vol 230 ◽  
Author(s):  
Toshihiro Shimada ◽  
Fumio S. Ohuchi ◽  
Bruce A. Parkinson
Keyword(s):  
Transition Metal ◽  
Charge Density ◽  
Epitaxial Growth ◽  
Ultrathin Films ◽  
Charge Density Wave ◽  
Density Wave ◽  
Transition Metal Dichalcogenides ◽  
Charge Density Waves ◽  
Density Waves ◽  
Metal Dichalcogenides

AbstractWe report an epitaxial growth of TaSe2, a family of transition metal dichalcogenides that exhibit Charge Density Waves (CDW). The films that have been characterized with RHEED, LEED, XPS and STM showed two different phases. Occurrence of CDW in the ultrathin films has been detected by XPS and LEED.

scholarly journals Paramagnetic effect of magnetic field on superconductors with charge-density waves

2005 ◽  
Vol 31 (1) ◽  
pp. 41-46 ◽  
Author(s):  
T. Ekino ◽  
A. M. Gabovich ◽  
A. I. Voitenko
Keyword(s):  
Magnetic Field ◽  
Charge Density ◽  
Charge Density Waves ◽  
Density Waves ◽  
Paramagnetic Effect

scholarly journals Phase diagram for charge-density waves in a magnetic field

1996 ◽  
Vol 53 (3) ◽  
pp. 1240-1250 ◽  
Author(s):  
D. Zanchi ◽  
A. Bjeliš ◽  
G. Montambaux
Keyword(s):  
Magnetic Field ◽  
Phase Diagram ◽  
Charge Density ◽  
Charge Density Waves ◽  
Density Waves

scholarly journals High-temperature charge density wave correlations in La1.875Ba0.125CuO4 without spin–charge locking

2017 ◽  
Vol 114 (47) ◽  
pp. 12430-12435 ◽  
Author(s):  
H. Miao ◽  
J. Lorenzana ◽  
G. Seibold ◽  
Y. Y. Peng ◽  
A. Amorese ◽  
...  
Keyword(s):  
High Temperature ◽  
Charge Density ◽  
Density Wave ◽  
Charge Density Waves ◽  
Charge Ordering ◽  
Density Waves ◽  
Spin Correlations ◽  
Spin Order ◽  
Charge Correlations ◽  
Ordering Transition

Although all superconducting cuprates display charge-ordering tendencies, their low-temperature properties are distinct, impeding efforts to understand the phenomena within a single conceptual framework. While some systems exhibit stripes of charge and spin, with a locked periodicity, others host charge density waves (CDWs) without any obviously related spin order. Here we use resonant inelastic X-ray scattering to follow the evolution of charge correlations in the canonical stripe-ordered cuprate La1.875Ba0.125CuO4 across its ordering transition. We find that high-temperature charge correlations are unlocked from the wavevector of the spin correlations, signaling analogies to CDW phases in various other cuprates. This indicates that stripe order at low temperatures is stabilized by the coupling of otherwise independent charge and spin density waves, with important implications for the relation between charge and spin correlations in the cuprates.

scholarly journals NOVEL PHENOMENA IN CHARGED BOSE LIQUID

1998 ◽  
Vol 13 (12) ◽  
pp. 987-994 ◽  
Author(s):  
KIMYEONG LEE ◽  
OLEG TCHERNYSHYOV
Keyword(s):  
Charge Density ◽  
Density Wave ◽  
Finite Size ◽  
Charge Density Waves ◽  
Two Dimensions ◽  
Coulomb Interactions ◽  
Density Waves ◽  
Boson Exchange ◽  
Bose Liquid ◽  
Uniform Background

We investigate charged Bose liquid immersed in uniform background charge at zero temperature. Novel phenomena, such as oscillatory shielding of external localized electric charge, rotons and charge density waves (charge stripes in two dimensions), occur in any dimensions. Oscillatory shielding is caused by mixing between scalar boson exchange and Coulomb interactions, which mediate opposite forces. On the other hand, rotons and charge density waves are due to attractive local self-interaction of bosons. Rotons can be regarded as a finite size charge density wave packet without any back flow. We also comment on charge stripes observed recently in cuprates and nickelates.

scholarly journals Pauli and orbital effects of magnetic field on charge density waves

1999 ◽  
Vol 09 (PR10) ◽  
pp. Pr10-203-Pr10-205 ◽  
Author(s):  
A. Bjelis ◽  
D. Zanchi ◽  
G. Montambaux
Keyword(s):  
Magnetic Field ◽  
Charge Density ◽  
Charge Density Waves ◽  
Density Waves

scholarly journals Translation-Invariant Bipolarons and Charge Density Waves in High-Temperature Superconductors

2021 ◽  
Vol 9 ◽  
Author(s):  
Victor D. Lakhno
Keyword(s):  
Charge Density ◽  
High Temperature Superconductors ◽  
Bose Condensate ◽  
Density Wave ◽  
Charge Density Waves ◽  
Superconducting Transition ◽  
Density Waves ◽  
Translation Invariant ◽  
Pseudogap Phase ◽  
Pair Density

A correlation is established between the theories of superconductivity based on the concept of charge density waves (CDWs) and the translation invariant (TI) bipolaron theory. It is shown that CDWs are originated from TI-bipolaron states in the pseudogap phase due to the Kohn anomaly and form a pair density wave (PDW) for wave vectors corresponding to nesting. Emerging in the pseudogap phase, CDWs coexist with superconductivity at temperatures below those of superconducting transition, while their wave amplitudes decrease as a Bose condensate is formed from TI bipolarons, vanishing at zero temperature.

Magnetic field effects to 230 kG on the magnetotransport and charge-density waves in NbSe3

Physica B+C ◽  
1986 ◽  
Vol 143 (1-3) ◽  
pp. 33-37 ◽  
Author(s):  
R.V. Coleman ◽  
M.P. Everson ◽  
G. Eiserman ◽  
A. Johnson
Keyword(s):  
Magnetic Field ◽  
Charge Density ◽  
Charge Density Waves ◽  
Magnetic Field Effects ◽  
Density Waves ◽  
Field Effects
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