期刊
APPLIED PHYSICS LETTERS
卷 99, 期 19, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.3659412
关键词
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资金
- NSERC, CFI-OIT
- Canadian Institute for Advanced Research
- BNL
- U.S. Department of Energy by Brookhaven Science Associates [DE-Ac02-98CH10886]
By spatially mapping the Doppler effect of an in-plane magnetic field on the quasiparticle tunneling spectrum, we have laterally imaged the vortex lattice in superconducting 2H-NbSe(2). Cryomagnetic scanning tunneling spectroscopy was performed at 300 mK on the ab-surface, which was oriented parallel to the field H. Conductance images at zero bias show stripe patterns running along H, with the stripe separation varying as H(-0.5). Regions of higher zero-bias conductance show lower gap-edge conductance, consistent with spectral redistribution by a spatially modulated superfluid momentum. Our results are interpreted in terms of the interaction between vortical and screening currents, and demonstrate a general method for probing subsurface vortices. VC 2011 American Institute of Physics. [doi: 10.1063/1.3659412]
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