Negative differential conductivity (NDC) is a widely exploited mechanism in many areas of research dealing with particle and energy transport. We experimentally realize such a many body quantum transport system based on ultracold atoms in a periodic potential. We prepare our system by loading Bose condensed rubidium atoms in a 1D optical lattice with high atom occupancy per lattice site. Subsequently, we remove all the atoms from a central lattice site. While the atoms from neighboring sites tunnel into the empty site, we observe NDC in the resulting current voltage characteristics and investigate the microscopic mechanism behind it [R. Labouvie, B. Santra, S. Heun, S. Wimberger, H. Ott, arXiv:1411.5632].

Negative Differential Conductivity in an Interacting Quantum Gas / Bodhaditya, Santra; Ralf, Labouvie; Simon, Heun; Wimberger, Sandro Marcel; Herwig, Ott. - In: BULLETIN OF THE AMERICAN PHYSICAL SOCIETY. - ISSN 0003-0503. - 60:7(2015).

Negative Differential Conductivity in an Interacting Quantum Gas

WIMBERGER, Sandro Marcel;
2015

Abstract

Negative differential conductivity (NDC) is a widely exploited mechanism in many areas of research dealing with particle and energy transport. We experimentally realize such a many body quantum transport system based on ultracold atoms in a periodic potential. We prepare our system by loading Bose condensed rubidium atoms in a 1D optical lattice with high atom occupancy per lattice site. Subsequently, we remove all the atoms from a central lattice site. While the atoms from neighboring sites tunnel into the empty site, we observe NDC in the resulting current voltage characteristics and investigate the microscopic mechanism behind it [R. Labouvie, B. Santra, S. Heun, S. Wimberger, H. Ott, arXiv:1411.5632].
Negative Differential Conductivity in an Interacting Quantum Gas / Bodhaditya, Santra; Ralf, Labouvie; Simon, Heun; Wimberger, Sandro Marcel; Herwig, Ott. - In: BULLETIN OF THE AMERICAN PHYSICAL SOCIETY. - ISSN 0003-0503. - 60:7(2015).
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11381/2788575
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