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Title: Mass enhancement and magnetic order at the Mott-Hubbard transition

Abstract

We study the evolution with pressure [ital P] and band filling [ital y] of the heat capacity, Hall coefficient, and resistivity at the approach to the [ital T][r arrow]0 Mott-Hubbard metal-insulator transition (MIT) in highly correlated V[sub 2[minus][ital y]]O[sub 3]. Under [ital P], the electronic effective mass [ital m][sup *] diverges at the MIT with a negligible change in carrier concentration [ital n] away from half-filling. Conversely, in the doped system [ital m][sup *] actually decreases as the MIT is approached, while [ital n] increases linearly with [ital y]. The low-[ital T] magnetic order in the metal helps us deconvolute contributions from charge correlations and spin fluctuations.

Authors:
;  [1]; ; ;  [2]
  1. The James Franck Institute and Department of Physics, The University of Chicago, Chicago, Illinois 60637 (United States)
  2. Department of Chemistry, Purdue University, West Lafayette, Indiana 47907 (United States)
Publication Date:
OSTI Identifier:
5550374
DOE Contract Number:  
FG02-90ER45427
Resource Type:
Journal Article
Journal Name:
Physical Review, B: Condensed Matter; (United States)
Additional Journal Information:
Journal Volume: 48:22; Journal ID: ISSN 0163-1829
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; VANADIUM OXIDES; PHASE TRANSFORMATIONS; EFFECTIVE MASS; ELECTRIC CONDUCTIVITY; HALL EFFECT; NEEL TEMPERATURE; SPECIFIC HEAT; STOICHIOMETRY; CHALCOGENIDES; ELECTRICAL PROPERTIES; MASS; OXIDES; OXYGEN COMPOUNDS; PHYSICAL PROPERTIES; THERMODYNAMIC PROPERTIES; TRANSITION ELEMENT COMPOUNDS; TRANSITION TEMPERATURE; VANADIUM COMPOUNDS; 360606* - Other Materials- Physical Properties- (1992-)

Citation Formats

Carter, S A, Rosenbaum, T F, Metcalf, P, Honig, J M, and Spalek, J. Mass enhancement and magnetic order at the Mott-Hubbard transition. United States: N. p., 1993. Web. doi:10.1103/PhysRevB.48.16841.
Carter, S A, Rosenbaum, T F, Metcalf, P, Honig, J M, & Spalek, J. Mass enhancement and magnetic order at the Mott-Hubbard transition. United States. doi:10.1103/PhysRevB.48.16841.
Carter, S A, Rosenbaum, T F, Metcalf, P, Honig, J M, and Spalek, J. Wed . "Mass enhancement and magnetic order at the Mott-Hubbard transition". United States. doi:10.1103/PhysRevB.48.16841.
@article{osti_5550374,
title = {Mass enhancement and magnetic order at the Mott-Hubbard transition},
author = {Carter, S A and Rosenbaum, T F and Metcalf, P and Honig, J M and Spalek, J},
abstractNote = {We study the evolution with pressure [ital P] and band filling [ital y] of the heat capacity, Hall coefficient, and resistivity at the approach to the [ital T][r arrow]0 Mott-Hubbard metal-insulator transition (MIT) in highly correlated V[sub 2[minus][ital y]]O[sub 3]. Under [ital P], the electronic effective mass [ital m][sup *] diverges at the MIT with a negligible change in carrier concentration [ital n] away from half-filling. Conversely, in the doped system [ital m][sup *] actually decreases as the MIT is approached, while [ital n] increases linearly with [ital y]. The low-[ital T] magnetic order in the metal helps us deconvolute contributions from charge correlations and spin fluctuations.},
doi = {10.1103/PhysRevB.48.16841},
journal = {Physical Review, B: Condensed Matter; (United States)},
issn = {0163-1829},
number = ,
volume = 48:22,
place = {United States},
year = {1993},
month = {12}
}