Possible high-temperature superconducting state with a d+id pairing symmetry in doped graphene

Sandeep Pathak; Vijay B. Shenoy; G. Baskaran

doi:10.1103/PhysRevB.81.085431

← Back to search

Possible high-temperature superconducting state with a d+id pairing symmetry in doped graphene

Sandeep Pathak, Vijay B. Shenoy, G. Baskaran

DOI 10.1103/PhysRevB.81.085431 · Physical Review B

T1

Active bibliographic source — not scientific approval

Bibliographic access preserves source history; it does not approve extracted materials or validate reported claims. Review warnings on each occurrence separately.

Abstract

Motivated by a suggestion in our earlier work [G. Baskaran, Phys. Rev. B 65, 212505 (2002)], we study electron correlation driven superconductivity in doped graphene where on-site correlations are believed to be of intermediate strength. Using an extensive variational Monte Carlo study of the repulsive Hubbard model and a correlated ground state wave function, we show that doped graphene supports a superconducting ground state with a d+id pairing symmetry. We estimate superconductivity reaching room temperatures at an optimal doping of about 15%–20%. Our work suggests that correlations can stabilize superconductivity even in systems with intermediate coupling.

Source-reported materials — not catalogue approval

Formula	Reported Tc (K)	Pressure (GPa)	Type
MgB2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown