Magnetotunneling as a Probe of Luttinger-Liquid Behavior

Abstract

A novel method for detecting Luttinger-liquid behavior is proposed. The idea is to measure the tunneling conductance between a quantum wire and a parallel two-dimensional electron system as a function of both the potential difference between them, $V$, and an in-plane magnetic field, $B$. We show that the two-parameter dependence on $B$ and $V$ allows for a determination of the characteristic dependence on wave vector $q$ and frequency $\omega$ of the {\it spectral function}, $A_{\mathrm{LL}}(q,\omega )$, of the quantum wire. In particular, the separation of spin and charge in the Luttinger liquid should manifest itself as singularities in the $I$-$V$-characteristic. The experimental feasibility of the proposal is discussed.

Accepted for publication in Phys. Rev. Lett

Cited by in corpus (23)

• Probing spin-charge separation in a Tomonaga-Luttinger liquid
• Spin-orbit coupling in interacting quasi-one-dimensional electron systems
• Theory of momentum resolved tunneling into a short quantum wire
• Mesoscopic effects in tunneling between parallel quantum wires
• Momentum-dependent power law measured in an interacting quantum wire beyond the Luttinger limit
• Momentum-resolved tunneling between Luttinger liquids
• Probing Spin-Charge Separation in Tunnel-Coupled Parallel Quantum Wires
• Hierarchy of modes in an interacting system
• c-axis transport in highly anisotropic metals: role of small polarons
• A New Prediction for Direct CP Violation ε'/εand ΔI = 1/2 Rule
• Nature of the many-body excitations in a quantum wire: theory and experiment
• Momentum-Resolved Tunneling into Fractional Quantum Hall Edges
• Spectral functions of two-band spinless fermion and single-band spin-1/2 fermion models
• Tracking spin and charge with spectroscopy in spin-polarised 1D systems
• Ground-state electronic structure of quasi-one-dimensional wires in semiconductor heterostructures
• Signatures of spin-charge separation in scanning probe microscopy
• Spectral functions in a magnetic field as a probe of spin-charge separation in a Luttinger liquid
• Many-body dispersions in interacting ballistic quantum wires
• Semiconductor nanodevices as a probe of strong electron correlations
• Probing e-e interactions in a periodic array of GaAs quantum wires
• Mesoscopic electron transport and atomic gases, a review of Frank W. J. Hekking's scientific work
• Dominant end-tunneling effect in two distinct Luttinger liquids coexisting in one quantum wire
• Magnetotunneling spectroscopy of mesoscopic correlations in two-dimensional electron systems