skip to main content

DOE PAGESDOE PAGES

Title: Determination of the resistivity anisotropy of orthorhombic materials via transverse resistivity measurements

Measurements of the resistivity anisotropy can provide crucial information about the electronic structure and scattering processes in anisotropic and low-dimensional materials, but quantitative measurements by conventional means often suffer very significant systematic errors. Here we describe a novel approach to measuring the resistivity anisotropy of orthorhombic materials, using a single crystal and a single measurement that is derived from a π/4 rotation of the measurement frame relative to the crystallographic axes. In this new basis, the transverse resistivity gives a direct measurement of the resistivity anisotropy, which combined with the longitudinal resistivity also gives the in-plane elements of the conventional resistivity tensor via a 5-point contact geometry. In conclusion, this is demonstrated through application to the charge-density wave compound ErTe 3, and it is concluded that this method presents a significant improvement on existing techniques, particularly when measuring small anisotropies.
Authors:
ORCiD logo [1] ; ORCiD logo [1]
  1. Stanford Univ., Stanford, CA (United States); SLAC National Accelerator Lab., Menlo Park, CA (United States)
Publication Date:
Grant/Contract Number:
AC02-76SF00515; GBMF4414
Type:
Accepted Manuscript
Journal Name:
Review of Scientific Instruments
Additional Journal Information:
Journal Volume: 88; Journal Issue: 4; Journal ID: ISSN 0034-6748
Publisher:
American Institute of Physics (AIP)
Research Org:
SLAC National Accelerator Lab., Menlo Park, CA (United States)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY
OSTI Identifier:
1368579
Alternate Identifier(s):
OSTI ID: 1361792

Walmsley, P., and Fisher, I. R.. Determination of the resistivity anisotropy of orthorhombic materials via transverse resistivity measurements. United States: N. p., Web. doi:10.1063/1.4978908.
Walmsley, P., & Fisher, I. R.. Determination of the resistivity anisotropy of orthorhombic materials via transverse resistivity measurements. United States. doi:10.1063/1.4978908.
Walmsley, P., and Fisher, I. R.. 2017. "Determination of the resistivity anisotropy of orthorhombic materials via transverse resistivity measurements". United States. doi:10.1063/1.4978908. https://www.osti.gov/servlets/purl/1368579.
@article{osti_1368579,
title = {Determination of the resistivity anisotropy of orthorhombic materials via transverse resistivity measurements},
author = {Walmsley, P. and Fisher, I. R.},
abstractNote = {Measurements of the resistivity anisotropy can provide crucial information about the electronic structure and scattering processes in anisotropic and low-dimensional materials, but quantitative measurements by conventional means often suffer very significant systematic errors. Here we describe a novel approach to measuring the resistivity anisotropy of orthorhombic materials, using a single crystal and a single measurement that is derived from a π/4 rotation of the measurement frame relative to the crystallographic axes. In this new basis, the transverse resistivity gives a direct measurement of the resistivity anisotropy, which combined with the longitudinal resistivity also gives the in-plane elements of the conventional resistivity tensor via a 5-point contact geometry. In conclusion, this is demonstrated through application to the charge-density wave compound ErTe3, and it is concluded that this method presents a significant improvement on existing techniques, particularly when measuring small anisotropies.},
doi = {10.1063/1.4978908},
journal = {Review of Scientific Instruments},
number = 4,
volume = 88,
place = {United States},
year = {2017},
month = {4}
}