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  Effect of Ge-doping and pressure in the vicinity of the QCP of YbRh2Si2

Trovarelli, O., Custers, J., Gegenwart, P., Geibel, C., Hinze, P., Mederle, S., et al. (2002). Effect of Ge-doping and pressure in the vicinity of the QCP of YbRh2Si2. Physica B, 312, 401-402. doi:10.1016/S0921-4526(01)01479-X.

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Item Permalink: https://hdl.handle.net/11858/00-001M-0000-0015-31A3-9 Version Permalink: https://hdl.handle.net/21.11116/0000-0000-32C7-7
Genre: Journal Article

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 Creators:
Trovarelli, O.1, Author           
Custers, J.1, Author           
Gegenwart, P.2, Author           
Geibel, C.3, Author           
Hinze, P.1, Author           
Mederle, S.1, Author           
Sparn, G.1, Author           
Steglich, F.4, Author           
Affiliations:
1Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863404              
2Physics of Quantum Materials, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863462              
3Christoph Geibel, Physics of Quantum Materials, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863465              
4Frank Steglich, Physics of Quantum Materials, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863467              

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Free keywords: non-fermi liquid; quantum critical phenomena; YbRh2Si2
 Abstract: We present electrical resistivity (p) and AC magnetic susceptibility measurements on Ge-doped single crystals of the NFL compound YbRh2Si2. Upon producing the volume expansion (DeltaVsimilar or equal to + 0.3%) necessary to tune this material to its QCP, the low-temperature rho(T) data of YbRh2(Si0.95Ge0.05)(2) are found to follow rho(T) = rho(0) + bT over three decades in temperature. We compare the effect of A V to that produced by the application of hydrostatic pressure, and show that the linear temperature dependence is intrinsic to the proximity to the QCP and not due to disorder induced by Ge- alloying. (C) 2002 Elsevier Science B.V. All rights reserved.

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Language(s): eng - English
 Dates: 2002-03
 Publication Status: Issued
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: eDoc: 18542
ISI: 000175871000146
DOI: 10.1016/S0921-4526(01)01479-X
 Degree: -

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Title: Physica B
  Alternative Title : Physica B
Source Genre: Journal
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Publ. Info: -
Pages: - Volume / Issue: 312 Sequence Number: - Start / End Page: 401 - 402 Identifier: ISSN: 0921-4526