The kondo effect in the unitary limit
W. G. van der Wiel,S. De Franceschi,Toshimasa Fujisawa,J. M. Elzerman,Seigo Tarucha,Seigo Tarucha,Leo P. Kouwenhoven +6 more
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In this paper, the Coulomb blockade for electron tunneling is overcome completely by the Kondo effect, and the conductance reaches the unitary limit value in a semiconductor quantum dot when a small magnetic field is applied.Abstract:
We observe a strong Kondo effect in a semiconductor quantum dot when a small magnetic field is applied. The Coulomb blockade for electron tunneling is overcome completely by the Kondo effect, and the conductance reaches the unitary limit value. We compare the experimental Kondo temperature with the theoretical predictions for the spin- 12 Anderson impurity model. Excellent agreement is found throughout the Kondo regime. Phase coherence is preserved when a Kondo quantum dot is included in one of the arms of an Aharonov-Bohm ring structure, and the phase behavior differs from previous results on a non-Kondo dot.read more
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Molecular spintronics using single-molecule magnets
Lapo Bogani,Wolfgang Wernsdorfer +1 more
TL;DR: This work reviews the first progress in the resulting field, molecular spintronics, which will enable the manipulation of spin and charges in electronic devices containing one or more molecules, and discusses the advantages over more conventional materials, and the potential applications in information storage and processing.
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Coulomb blockade and the Kondo effect in single-atom transistors
Jiwoong Park,Jiwoong Park,Abhay Pasupathy,Jonas I. Goldsmith,Connie Chang,Yuval Yaish,Jason R. Petta,Marie Rinkoski,James P. Sethna,Héctor D. Abruña,Paul L. McEuen,Daniel C. Ralph +11 more
TL;DR: Two related molecules containing a Co ion bonded to polypyridyl ligands, attached to insulating tethers of different lengths are examined, enabling the fabrication of devices that exhibit either single-electron phenomena, such as Coulomb blockade or the Kondo effect.
Journal ArticleDOI
Magnetic effects at the interface between non-magnetic oxides
Alexander Brinkman,Mark Huijben,Mark Huijben,M. van Zalk,J. Huijben,Uli Zeitler,Jan C. Maan,W.G. van der Wiel,Guus Rijnders,David H.A. Blank,Hans Hilgenkamp +10 more
TL;DR: In this article, the authors show how magnetism can be induced at the interface between the otherwise non-magnetic insulating perovskites SrTiO3 and LaAlO3.
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Kondo resonance in a single-molecule transistor
TL;DR: The Kondo resonance can be tuned reversibly using the gate voltage to alter the charge and spin state of the molecule and persists at temperatures up to 30 K and when the energy separation between the molecular state and the Fermi level of the metal exceeds 100 meV.
Journal ArticleDOI
Numerical renormalization group method for quantum impurity systems
TL;DR: In the early 1970s, Wilson developed the concept of a fully nonperturbative renormalization group transformation as mentioned in this paper, which gave for the first time the full crossover from the high temperature phase of a free spin to the low-temperature phase of completely screened spin.
References
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Resistance Minimum in Dilute Magnetic Alloys
TL;DR: In this article, the scattering probability of conduction electrons to the second Born approximatism was calculated based on the s-d interaction model for dilute magnetic alloys, and it was shown that J should be negative in alloys which show a resistance minimum.
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Four-terminal phase-coherent conductance.
TL;DR: A conductance formula for a sample of arbitrary shape with four terminals is derived to describe transport in the limit where carriers can traverse the sample without suffering phase-destroying events.
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Kondo effect in a single-electron transistor
David Goldhaber-Gordon,David Goldhaber-Gordon,Hadas Shtrikman,Diana Mahalu,David Abusch-Magder,U. Meirav,Marc Kastner +6 more
TL;DR: In this paper, the binding energy of the spin singlet has been observed in a single-electron transistor (SET) with only two electrodes and without control over the structure.
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Kondo Physics in a Single Electron Transistor
David Goldhaber-Gordon,Hadas Shtrikman,Diana Mahalu,David Abusch-Magder,U. Meirav,Marc Kastner +5 more
TL;DR: Meir et al. as mentioned in this paper reported measurements on a new generation of SETs that display all the aspects of the Kondo phenomenon: the spin singlet forms and causes an enhancement of the zero-bias conductance when the number of electrons on the artificial atom is odd but not when it is even.
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A tunable kondo effect in quantum dots
TL;DR: A tunable Kondo effect has been realized in small quantum dots and measurements of the temperature and magnetic field dependence of a Coulomb-blockaded dot show good agreement with predictions of both equilibrium and nonequilibrium Kondo effects.