Spectroscopy of the Single-Particle States of a Quantum-Dot Molecule | Zendy

Thomas Schmidt | Zendy; R. J. Haug | Zendy; K. von Klitzing | Zendy; A. Förster | Zendy; H. Lüth | Zendy

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Spectroscopy of the Single-Particle States of a Quantum-Dot Molecule

Author(s) -

Thomas Schmidt,

R. J. Haug,

K. von Klitzing,

A. Förster,

H. Lüth

Publication year - 1997

Publication title -

physical review letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 3.688

H-Index - 673

eISSN - 1079-7114

pISSN - 0031-9007

DOI - 10.1103/physrevlett.78.1544

Subject(s) - quantum dot , spectroscopy , physics , current (fluid) , particle (ecology) , relaxation (psychology) , heterojunction , molecule , condensed matter physics , atomic physics , coulomb blockade , molecular physics , quantum dot laser , materials science , voltage , quantum well , quantum mechanics , psychology , social psychology , laser , oceanography , transistor , thermodynamics , geology

We investigate low-temperature transport through two identical vertically coupled quantum dots in a triple-barrier heterostructure. The current-voltage curve exhibits two series of current steps of different magnitude. On the basis of magnetotunneling measurements, we relate the current steps to the single-particle levels of a quantum-dot molecule. From the absence of many-particle phenomena, an upper limit of 1 ns is determined for the energy-relaxation time in the double-dot system. [S0031-9007(97)02436-8]

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