Metastable filamentary vortex flow in thin film superconductors

Journal Article · Sun Mar 31 23:00:00 EST 1996 · Physical Review Letters

OSTI ID:284512

Bishop, A R; Dominguez, D ^[1]

---

1. Theoretical Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (United States)

We present simulations of vortex dynamics in amorphous two-dimensional thin film superconductors, using a new exact method to evaluate long-range interactions between vortices. We find that the onset of dissipation for increasing current is dominated by filamentary channels of flow which are stable in a finite range of bias current. This results in novel steps in the differential resistance, which are strongly history dependent. Our results are in good agreement with recent experiments on amorphous Mo{sub 77}Ge{sub 23} superconducting thin films. {copyright} {ital 1996 The American Physical Society.}

• OSTI ID: 284512
• Journal Information: Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 16 Vol. 76; ISSN 0031-9007; ISSN PRLTAO
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
AMORPHOUS STATE
COMPUTERIZED SIMULATION
DISSIPATION FACTOR
FILAMENTS
GERMANIUM ALLOYS
MAGNETIC FLUX
MOLYBDENUM ALLOYS
SUPERCONDUCTING FILMS
VORTICES