Visualization of Fermi's Golden Rule Through Imaging of Light Emission from Atomic Silver Chains Export

@article{citeulike:5538573, abstract = {Atomic-scale spatial imaging of one-dimensional chains of silver atoms allows Fermi's golden rule, a fundamental principle governing optical transitions, to be visualized. We used a scanning tunneling microscope (STM) to assemble a silver atom chain on a nickel-aluminum alloy surface. Photon emission was induced with electrons from the tip of the STM. The emission was spatially resolved with subnanometer resolution by changing the tip position along the chain. The number and positions of the emission maxima in the photon images match those of the nodes in the differential conductance images of particle-in-a-box states. This surprising correlation between the emission maxima and nodes in the density of states is a manifestation of Fermi's golden rule in real space for radiative transitions and provides an understanding of the mechanism of STM-induced light emission. 10.1126/science.1174592}, author = {Chen, Chi and Bobisch, C. A. and Ho, W.}, citeulike-article-id = {5538573}, citeulike-linkout-0 = {http://dx.doi.org/10.1126/science.1174592}, citeulike-linkout-1 = {http://www.sciencemag.org/cgi/content/abstract/325/5943/981}, day = {21}, doi = {10.1126/science.1174592}, journal = {Science}, keywords = {fun, qm}, month = {August}, number = {5943}, pages = {981--985}, posted-at = {2009-08-21 22:23:51}, priority = {2}, title = {Visualization of Fermi's Golden Rule Through Imaging of Light Emission from Atomic Silver Chains}, url = {http://dx.doi.org/10.1126/science.1174592}, volume = {325}, year = {2009} }

TY - JOUR ID - citeulike:5538573 L3 - citeulike-article-id:5538573 N2 - Atomic-scale spatial imaging of one-dimensional chains of silver atoms allows Fermi's golden rule, a fundamental principle governing optical transitions, to be visualized. We used a scanning tunneling microscope (STM) to assemble a silver atom chain on a nickel-aluminum alloy surface. Photon emission was induced with electrons from the tip of the STM. The emission was spatially resolved with subnanometer resolution by changing the tip position along the chain. The number and positions of the emission maxima in the photon images match those of the nodes in the differential conductance images of particle-in-a-box states. This surprising correlation between the emission maxima and nodes in the density of states is a manifestation of Fermi's golden rule in real space for radiative transitions and provides an understanding of the mechanism of STM-induced light emission. 10.1126/science.1174592 IS - 5943 JF - Science EP - 985 TI - Visualization of Fermi's Golden Rule Through Imaging of Light Emission from Atomic Silver Chains VL - 325 SP - 981 KW - fun KW - qm AU - Chen, Chi AU - Bobisch, CA AU - Ho, W PY - 2009/08/21/ UR - http://dx.doi.org/10.1126/science.1174592 ER -