2001/10/26 by Xuan Gao, Xuan P. A. Gao, A. P. Mills +7 · 25 citations
Physics and Astronomy · #Atomic physics #Axial symmetry #Condensed matter physics #Drop (telecommunication) #Magnetic field #Materials science #Metal #Physics #Physics of Superconductivity and Magnetism #Quantum and electron transport phenomena #Quantum mechanics #Semiconductor Quantum Structures and Devices #Zeeman effect #cond-mat.str-el
paper · pdf · doi:10.1103/physrevlett.88.166803
published in Physical Review Letters 88(16), 166803 (American Physical Society)
arxiv created 2001/10/26 · openalex publication_date 2002/04/09 · arxiv updated 2012/08/27 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We have investigated the effect of an in-plane parallel magnetic field (B(axially) on two high mobility metallic-like dilute two-dimensional hole gas systems in GaAs quantum wells. The experiments reveal that, while suppressing the magnitude of the low temperature resistance drop, B(axially) does not affect E(a), the characteristic energy scale of the metallic resistance drop. The field B(c) at which the metallic-like resistance drop vanishes is dependent on both the width of the quantum well and the orientation of B(axially). It is unexpected that E(a) is unaffected by B(axially) up to B(c) despite the fact that the Zeeman energy at B(c) is roughly equal to E(a).