Open Access
Density dependent spin polarisation in ultra low-disorder quantum wires
David J. Reilly,T. M. Buehler,Jeremy L. O'Brien,Alex R. Hamilton,Andrew S. Dzurak,R. G. Clark,Bruce E. Kane,L. N. Pfeiffer,Ken W. West +8 more
TLDR
In this paper, the authors present conductance measurements on ultra-low-disorder quantum wires supportive of a spin polarization at B = 0.5-0.7)x2e(2)/h in conductance data.Abstract:
There is controversy as to whether a one-dimensional (1D) electron gas can spin polarize in the absence of a magnetic field. Together with a simple model, we present conductance measurements on ultra-low-disorder quantum wires supportive of a spin polarization at B=0. A spin energy gap is indicated by the presence of a feature in the range (0.5-0.7)x2e(2)/h in conductance data. Importantly, it appears that the spin gap is not constant but a function of the electron density. Data obtained using a bias spectroscopy technique are consistent with the spin gap widening further as the Fermi level is increased.read more
Citations
More filters
Journal ArticleDOI
One-dimensional hole gas in germanium/silicon nanowire heterostructures
TL;DR: The synthesis and transport studies of a 1D hole gas system based on a free-standing germanium/silicon (Ge/Si) core/shell nanowire heterostructure are reported and a "0.7 structure" is observed, suggesting the universality of this phenomenon in interacting 1D systems.
Journal ArticleDOI
Spin-charge separation and localization in one dimension.
Ophir M. Auslaender,Ophir M. Auslaender,Ophir M. Auslaender,Hadar Steinberg,Hadar Steinberg,Hadar Steinberg,Amir Yacoby,Amir Yacoby,Amir Yacoby,Yaroslav Tserkovnyak,Yaroslav Tserkovnyak,Yaroslav Tserkovnyak,Bertrand I. Halperin,Bertrand I. Halperin,Bertrand I. Halperin,K. W. Baldwin,K. W. Baldwin,K. W. Baldwin,Loren N. Pfeiffer,Loren N. Pfeiffer,Loren N. Pfeiffer,K. W. West,K. W. West,K. W. West +23 more
TL;DR: In this article, measurements of quantum many-body modes in ballistic wires and their dependence on Coulomb interactions, obtained by tunneling between two parallel wires in an GaAs/AlGaAs heterostructure while varying electron density, were reported.
Book ChapterDOI
Electrical Transport in Single-Wall Carbon Nanotubes
TL;DR: In this article, the authors review recent progress in the measurement and understanding of the electrical properties of individual metal and semiconducting single-wall carbon nanotubes, along with the properties of p-n and Schottky-barrier junctions insemiconductor tubes.
Journal Article
Spontaneous Segregation of Self-Propelled Particles with Different Motilities
TL;DR: In this paper, the authors study mixtures of self-propelled and passive rod-like particles in two dimensions using Brownian dynamics simulations and demonstrate that the two species spontaneously segregate to generate a rich array of dynamical domain structures whose properties depend on the propulsion velocity, density, and composition.
References
More filters
Journal ArticleDOI
One-dimensional hole gas in germanium/silicon nanowire heterostructures
TL;DR: The synthesis and transport studies of a 1D hole gas system based on a free-standing germanium/silicon (Ge/Si) core/shell nanowire heterostructure are reported and a "0.7 structure" is observed, suggesting the universality of this phenomenon in interacting 1D systems.
Book ChapterDOI
Electrical Transport in Single-Wall Carbon Nanotubes
TL;DR: In this article, the authors review recent progress in the measurement and understanding of the electrical properties of individual metal and semiconducting single-wall carbon nanotubes, along with the properties of p-n and Schottky-barrier junctions insemiconductor tubes.
Journal Article
Spontaneous Segregation of Self-Propelled Particles with Different Motilities
TL;DR: In this paper, the authors study mixtures of self-propelled and passive rod-like particles in two dimensions using Brownian dynamics simulations and demonstrate that the two species spontaneously segregate to generate a rich array of dynamical domain structures whose properties depend on the propulsion velocity, density, and composition.
Journal ArticleDOI
What lurks below the last plateau: experimental studies of the 0.7 × 2e(2)/h conductance anomaly in one-dimensional systems.
TL;DR: In this article, a review report on experimental studies of fractionally quantized plateaus in semiconductor quantum point contacts and quantum wires, focusing on the 0.7 × 2e(2)/h conductance anomaly, its analogues at higher conductances and the zero-bias peak observed in the dc source-drain bias for conductances less than 2e (2) 2 /h.
Related Papers (5)
A strong anisotropy of spin dephasing time of quasi-one dimensional electron gas in modulation-doped GaAs/AlGaAs wires
Spin-transport dynamics of optically spin-polarized electrons in GaAs quantum wires
Tetsuomi Sogawa,H. Ando,S. Ando +2 more