Field-induced confinement in (TMTSF)2ClO4 under accurately aligned magnetic fields

TL;DR

This study demonstrates that an accurately aligned magnetic field induces two-dimensional confinement of carriers in (TMTSF)2ClO4, leading to a metal-insulator transition along the c axis, supported by experimental transport data and quantum calculations.

Contribution

It provides the first detailed experimental and theoretical analysis of magnetic field-induced confinement in (TMTSF)2ClO4 with precise field alignment.

Findings

Magnetic field causes 2D confinement of carriers in (a,b) planes.

Field component along b' induces a metal-insulator transition along c axis.

Quantum calculations support experimental observations.

Abstract

We present transport measurements along the least conducting c direction of the organic superconductor (TMTSF)2ClO4, performed under an accurately aligned magnetic field in the low temperature regime. The experimental results reveal a two-dimensional confinement of the carriers in the (a,b) planes which is governed by the magnetic field component along the b' direction. This 2-D confinement is accompanied by a metal-insulator transition for the c axis resistivity. These data are supported by a quantum mechanical calculation of the transverse transport taking into account in self consistent treatment the effect of the field on the interplane Green function and on the intraplane scattering time.