Numerical study of localization of Dirac fermions on a lattice in two dimensions

Journal Article · Sun Aug 01 00:00:00 EDT 1993 · Physical Review, B: Condensed Matter; (United States)

DOI:https://doi.org/10.1103/PhysRevB.48.4204· OSTI ID:6324970

Hatsugai, Y; Lee, P A ^[1]

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1. Department of Physics, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139 (United States)

We studied the effects of impurities on Dirac fermions numerically. We used a tight-binding Hamiltonian of fermions with the magentic flux equal to [pi] per plaquette for the model. A small amount of strong impurities create states near the zero energy and strong localization of these states is observed. Our results support a recent proposal of localization effects in a gapless [ital d]-wave superconductor.

• OSTI ID: 6324970
• Journal Information: Physical Review, B: Condensed Matter; (United States), Vol. 48:6; ISSN 0163-1829
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
HIGH-TC SUPERCONDUCTORS
IMPURITIES
CRYSTAL LATTICES
D WAVES
FERMIONS
MAGNETIC FLUX
NUMERICAL SOLUTION
TWO-DIMENSIONAL CALCULATIONS
CRYSTAL STRUCTURE
PARTIAL WAVES
SUPERCONDUCTORS
665400* - Quantum Physics Aspects of Condensed Matter- (1992-)