Fermi surface in the hidden-order state of URu sub(2)Si sub(2) under intense pulsed magnetic fields up to 81 T

We present measurements of the resistivity [rho] sub(x, x) of URu sub(2) Si sub(2) high-quality single crystals in pulsed high magnetic fields up to 81 T at a temperature of 1.4 K and up to 60 T at temperatures down to 100 mK. The interplay between the magnetic and orbital properties is emphasized b...

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Bibliographic Details
Published in:	Physical review. B, Condensed matter and materials physics Vol. 89; no. 16
Main Authors:	Scheerer, G W, Knafo, W, Aoki, D, Nardone, M, Zitouni, A, Beard, J, Billette, J, Batata, J, Jaudet, C, Suleiman, M
Format:	Journal Article
Language:	English
Published:	15-04-2014
Subjects:	Asymptotic properties Condensed matter Crossovers Fermi surfaces Fourier analysis Magnetic fields Magnetic properties Oscillations Phase diagrams
Online Access:	Get full text
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Summary:	We present measurements of the resistivity [rho] sub(x, x) of URu sub(2) Si sub(2) high-quality single crystals in pulsed high magnetic fields up to 81 T at a temperature of 1.4 K and up to 60 T at temperatures down to 100 mK. The interplay between the magnetic and orbital properties is emphasized by the angle dependence of the phase diagram, where magnetic transition fields and crossover fields related to the Fermi surface properties follow a 1/ sub(cos) [theta] law, [theta] being the angle between H and c. A second crossover is defined at the maximum of [rho] sub(x, x) at the sample-independent low-temperature (LT) characteristic field mu sub(0) H sub(LT) sub([rho]).max [Asymptotically = to] 30 T. Fourier analyses of Shubnikov-de Haas oscillations show that H sub(LT) sub(i[rho]).max [Asymptotically = to] 30 coincides with a sudden modification of the Fermi surface, while H* lies in a regime where the Fermi surface is smoothly modified.
Bibliography:	ObjectType-Article-1 SourceType-Scholarly Journals-1 content type line 23 ObjectType-Feature-2
ISSN:	1098-0121 1550-235X