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| Creator | Title | Description | Subject | Date | ||
|---|---|---|---|---|---|---|
| 1 |
 | DeTar, Carleton | Continuum limit of lattice QCD with staggered quarks in the quenched approximation: a critical role for the chiral extrapolation | We calculate the light quark spectrum of lattice QCD in the quenched approximation using staggered quarks. We take the light quark mass, infinite volume, continuum limit. With nonlinear chiral extrapolations, we find that the nucleon to p mass ratio is mN/mp = 1.254 + 0.018 + 0.028, where the err... | Staggered quarks; Chiral extrapolations | 1998-10 |
| 2 |
 | Liu, Feng | Hydrogen induced Si surface segregation on Ge-covered Si(001) | Using Fourier transform infrared-attenuated total reflectance spectroscopy in conjunction with hydrogen adsorption to probe surface layer composition, we observe a reversible place exchange between Ge and Si on Ge-covered Si(001) when the surface is dosed with atomic H at elevated temperatures. F... | Si surface segregation; Ge-covered; Si(001) | 1998-10 |
| 3 |
 | Liu, Feng | Modification of Si(001) substrate bonding by adsorbed Ge or Si dimer islands | High-resolution scanning tunneling microscopy studies of the Si(100)-(2 X 1) surface show a heretofore unrecognized distortion of the substrate structure when islands form during the initial stage of growth of either Si or Ge. The distortion, reflecting the influence of strain, extends at least thre... | Si(001); Adsorbed Ge; Adsorbed Si; Dimer islands; Substrate bonding; Distortion | 1998-09 |
| 4 |
 | Liu, Feng | Self-organization of steps in growth of strained films on vicinal substrates | Computer simulations show that if stress is present, steps on a vicinal surface can self-organize into a regular array of step bunches. Such self-organization can provide templates for subsequent fabrication of "quantum wire" nanostructures. The size and spacing of the bunches can be controlled inde... | Self-organization; Strained films; Growth; Vicinal substrates; Step bunches | 1998-02 |
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