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1.
Phys Rev Lett ; 108(15): 156401, 2012 Apr 13.
Article in English | MEDLINE | ID: mdl-22587267

ABSTRACT

We analyze the nonlinear transport properties of a bilayer exciton condensate that is contacted by four metallic leads by calculating the full counting statistics of electron transport for arbitrary system parameters. Despite its formal similarity to a superconductor the transport properties of the exciton condensate turn out to be completely different. We recover the generic features of exciton condensates such as counterpropagating currents driven by excitonic Andreev reflections and make predictions for nonlinear transconductance between the layers as well as for the current (cross)correlations and generalized Johnson-Nyquist relationships. Finally, we explore the possibility of connecting another mesoscopic system (in our case a quantum point contact) to the bottom layer of the exciton condensate and show how the excitonic Andreev reflections can be used for transforming voltage at the nanoscale.

2.
CDA J ; 16(4): 27-30, 1988 Apr.
Article in English | MEDLINE | ID: mdl-3164657
3.
4.
J Am Dent Assoc ; 116(1): 37-42, 1988 Jan.
Article in English | MEDLINE | ID: mdl-3422664

ABSTRACT

The increasing use of smokeless tobacco and the accumulating list of associated health hazards including cancer and cardiovascular effects should be of concern to the dentist. This study documents both concern from patients' perceptions and clinical examinations of their smokeless tobacco-associated lesions. Implications for the dentists' practice among adolescents and young adults are discussed.


Subject(s)
Mouth Diseases/diagnosis , Nicotiana , Plants, Toxic , Tobacco, Smokeless , Adolescent , Adult , Attitude to Health , Health Education, Dental , Humans , Male , Mouth Diseases/etiology , Mouth Diseases/pathology , Smoking
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