Bosonization of Cooper pairs and novel Bose-liquid superconductivity and superfluidity in high-Tc cuprates and other exotic systems

2019 ◽  
Vol 517 ◽  
pp. 197-209
Author(s):  
S. Dzhumanov
Keyword(s):  
Cooper Pairs ◽  
High Tc ◽  
Bose Liquid ◽  
High Tc Cuprates ◽  
Exotic Systems

scholarly journals Unusual metallic conductivity of high-Tc cuprates

2021 ◽  
Vol 5 (3) ◽  
pp. 183-191
Author(s):  
S. Dzhumanov ◽  
Sh.R. Malikov ◽  
Sh.S. Djumanov
Keyword(s):  
Transport Theory ◽  
Charge Carriers ◽  
Cooper Pairs ◽  
Linear Temperature Dependence ◽  
Linear Temperature ◽  
High Tc ◽  
Distinctive Features ◽  
Metallic Conductivity ◽  
Temperature Dependences ◽  
High Tc Cuprates

The intrinsic mechanisms of the unusual metallic transports of three types of relevant charge carriers (large polarons, excited (dissociated) polaronic components of bosonic Cooper pairs and bosonic Cooper pairs themselves) along the CuO2 layers of high-Tc cuprates are identified and the new features of metallic conductivity in the CuO2 layers (i.e. ab -planes) of underdoped and optimally doped cuprates are explained. The in-plane conductivity of high-Tc cuprates is associated with the metallic transports of such charge carriers at their scattering by lattice vibrations in thin CuO2 layers. The proposed charge transport theory in high-Tc cuprates allows to explain consistently the distinctive features of metallic conductivity and the puzzling experimental data on the temperature dependences of their in-plane resistivity pab. In underdoped and optimally doped cuprates the linear temperature dependence of pab(T) above the pseudogap formation temperature T∗ is associated with the scattering of polaronic carriers at acoustic and optical phonons, while the different (upward and downward) deviations from the linearity in pab(T) below T∗ are caused by the pseudogap effect on the conductivity of the excited Fermi components of bosonic Cooper pairs and by the dominating conductivity of bosonic Cooper pairs themselves in the normal state of these high-Tc materials.

DISTINCTIVE FEATURES OF NOVEL SUPERCONDUCTING TRANSITIONS IN UNDERDOPED AND OVERDOPED HIGH-Tc CUPRATES

2005 ◽  
Vol 19 (01n03) ◽  
pp. 43-45
Author(s):  
S. DZHUMANOV ◽  
J. D. FAN
Keyword(s):  
Phase Transitions ◽  
Liquid State ◽  
Cooper Pair ◽  
Pair Formation ◽  
High Tc ◽  
Distinctive Features ◽  
Bose Liquid ◽  
Pair Condensation ◽  
High Tc Cuprates ◽  
Superconducting Transitions

It is argued that the new theory that combines the precursor BCS-like non-superconducting (SC) pairing and the Cooper-pair condensation into a superfluid Bose-liquid state is more plausible than the standard SC fluctuation approach in describing the distinctive features of the underdoped and overdoped high-Tc cuprates. We show that the scenarios for high-Tc superconductivity in these materials are quite different on the character of the Cooper-pair formation and SC phase transitions.

Excitation spectra in doped high-Tc cuprates

2005 ◽  
Vol 66 (8-9) ◽  
pp. 1392-1394
Author(s):  
Takashi Yanagisawa ◽  
Mitake Miyazaki ◽  
Kunihiko Yamaji
Keyword(s):  
Excitation Spectra ◽  
High Tc ◽  
High Tc Cuprates

Sum Rules and Interlayer Conductivity of High-Tc Cuprates

Science ◽  
1999 ◽  
Vol 283 (5398) ◽  
pp. 49-52 ◽  
Author(s):  
D. N. Basov
Keyword(s):  
Sum Rules ◽  
High Tc ◽  
High Tc Cuprates

Unified explanation for the six doping dependences in the high-Tc cuprates

2002 ◽  
Vol 377 (4) ◽  
pp. 531-537 ◽  
Author(s):  
Fu-sui Liu ◽  
Wan-fang Chen
Keyword(s):  
High Tc ◽  
High Tc Cuprates
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