نتایج جستجو برای: atomic lattice
تعداد نتایج: 180945 فیلتر نتایج به سال:
Standard optical potentials use off-resonant laser standing wave induced AC-Stark shift. In a recent development [Phys. Rev. Lett. {\bf 117}, 233001 (2016)] three-level scheme in $\Lambda$ configuration coupled coherently by resonant fields was introduced leading to an effective lattice with subwavelength potential peaks. Here as extension of that work four level atomic setup the tripod is used...
We devise a microscopic model for the emergence of a collision-induced, fermionic atomic current across a tilted optical lattice. Tuning the--experimentally controllable--parameters of the microscopic dynamics allows us to switch from Ohmic to negative differential conductance.
Self-assembly techniques allow for the fabrication of highly organized architectures with atomic-level precision. Here, we report on molecular-level scanning tunneling microscopy observations demonstrating the supramolecular engineering of complex, regular, and long-range ordered periodic networks on a surface atomic lattice using simple linear molecular bricks. The length variation of the empl...
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