Magnetic Field Effects in the Pseudogap Phase: A Competing Energy Gap Scenario for Precursor Superconductivity

Abstract

We study the sensitivity of T_c and T^* to low fields, H, within the pseudogap state using a BCS-based approach extended to arbitrary coupling. We find that T^* and T_c, which are of the same superconducting origin, have very different H dependences. This is due to the pseudogap, Δ_{pg}, which is present at the latter, but not former temperature. Our results for the coherence length ξfit well with existing experiments.We predict that very near the insulator ξwill rapidly increase.

arXiv comment4 pages, 4 figures, RevTex

References in corpus (15)

• Hidden Order in the Cuprates
• The doping dependence of T* - what is the real high-Tc phase diagram?
• Evidence for coexistence of the superconducting gap and the pseudo - gap in Bi-2212 from intrinsic tunneling spectroscopy
• The Unusual Superconducting State of Underdoped Cuprates
• Pairing Fluctuation Theory of Superconducting Properties in Underdoped to Overdoped Cuprates
• Pseudogap effects induced by resonant pair scattering
• Discrimination between the superconducting gap and the pseudo-gap in Bi2212 from intrinsic tunneling spectroscopy in magnetic field
• Closing the Pseudogap by Zeeman Splitting in Bi_2Sr_2CaCu_2O_8+y at High Magnetic Fields
• Magnetic field independence of the spin gap in YBa_2Cu_3O_{7-delta}
• Superconducting transitions from the pseudogap state: d-wave symmetry, lattice, and low-dimensional effects
• On the Relationship Between the Pseudo- and Superconducting Gaps: Effects of Residual Pairing Correlations Below Tc
• Superconducting Fluctuations and the Pseudogap in the Slightly-overdoped High-Tc Superconductor TlSr2CaCu2O6.8: High Magnetic Field NMR Studies
• Unusual thermodynamical and transport signatures of short coherence length superconductors: A BCS Bose-Einstein crossover approach
• The same superconducting criticality for underdoped and overdoped La_{2-x}Sr_xCuO_4 single crystals
• Effect of Magnetic field on the Pseudogap Phenomena in High-Tc Cuprates

Cited by in corpus (10)

• Magnetoresistance of Untwinned YBa_{2}Cu_{3}O_{y} Single Crystals in a Wide Range of Doping: Anomalous Hole-Doping Dependence of the Coherence Length
• Applying BCS-BEC Crossover Theory To High Temperature Superconductors and Ultracold Atomic Fermi Gases
• Magnetic Field Effect on the Pseudogap Temperature within Precursor Superconductivity
• Magnetic-field-induced finite-size effect in the high-temperature superconductor YBa2Cu3O7-a comparison to rotating superfluid 4 He
• Superconducting Fluctuation and Pseudogap in Disordered Short Coherence Length Superconductor
• Combined effects of pairing fluctuations and a pseudogap in the Cuprate Hall effect
• Pair-breaking effects in the Pseudogap Regime: Application to High Temperature Superconductors
• Pseudogap Effects of Fermi Gases in the Presence of A Strong Effective Magnetic Field
• Magnetic Field Effects in the Pseudogap Phase: A Precursor Superconductivity Scenario
• Magnetic field effects on $T_c$ and the pseudogap onset temperature in cuprate superconductors