Biomedical subjects
DM Chen
Publications and source records attributed to DM Chen.
Bistability in scanning tunneling spectroscopy of Ga-terminated Si(111)
Bistable electron transport, a phenomenon usually associated with double-barrier structures, has been observed with a conventional STM junction formed between a metal tip and a Ga-terminated Si(111) surface at 77 K. Large hysteresis loops appear in the current-voltage characteristics when electrons are injected from the tip to the surface. The turn-on bias varies from -3.1 to -4.0 V and shows an inverse dependence on the tip-sample distance, indicating a strong field effect. The turn-off bias, however, is essentially pinned at a conductance threshold of -2.7 V.
Ordering of C60 on anisotropic surfaces.
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Erratum: C60-induced reconstruction of the Ge(111) surface
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C60-induced reconstruction of the Ge(111) surface.
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Double domain solid C60 on Si(111)7 x 7.
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Two reaction channels directly observed for atomic hydrogen on the Si(111)-7 x 7 surface.
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Adatom registry on Si(111)-( sqrt 3 x sqrt 3 )R30 degrees-B.
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Surface doping and stabilization of Si(111) with boron.
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Two-dimensional angular correlation of annihilation radiation study of positron interactions with surfaces of aluminum.
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X-ray standing-wave and tunneling-microscope location of gallium atoms on a silicon surface.
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Tunneling images of gallium on a silicon surface: Reconstructions, superlattices, and incommensuration.
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Angle-resolved positronium emission spectroscopy.
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Variable-energy positron-beam studies of Ni implanted with He.
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Measurement of positron reemission from thin single-crystal W(100) films.
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