Microwave conductivity of heavy fermions in UPd2Al3.
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| Title: | Microwave conductivity of heavy fermions in UPd |
|---|---|
| Authors: | Scheffler, Marc1, Dressel, Martin1, Jourdan, Martin2 scheffl@pil.physik.uni-stuttgart.de |
| Source: | European Physical Journal B: Condensed Matter. Apr2010, Vol. 74 Issue 3, p331-338. 8p. 4 Graphs. |
| Subjects: | Fermions, Microwave spectroscopy, Optical spectroscopy, Molecular spectroscopy, Electric conductivity |
| Abstract: | Heavy-fermion compounds are characterized by electronic correlation effects at low energies which can directly be accessed with optical spectroscopy. Here we present detailed measurements of the frequency- and temperature-dependent conductivity of the heavy-fermion compound UPd2Al3 using broadband microwave spectroscopy in the frequency range 45 MHz to 40 GHz at temperatures down to 1.7 K. We observe the full Drude response with a relaxation time up to 50 ps, proving that the mass enhancement of the heavy charge carriers goes hand in hand with an enhancement of the relaxation time. We show that the relaxation rate as a function of temperature scales with the dc resistivity. We do not find any signs of a frequency-dependent relaxation rate within the addressed frequency range. [ABSTRACT FROM AUTHOR] |
| Copyright of European Physical Journal B: Condensed Matter is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
| FullText | Links: – Type: pdflink Text: Availability: 0 |
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| Header | DbId: egs DbLabel: Engineering Source An: 49086776 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Microwave conductivity of heavy fermions in UPd<subscript>2</subscript>Al<subscript>3</subscript>. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Scheffler%2C+Marc%22">Scheffler, Marc</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Dressel%2C+Martin%22">Dressel, Martin</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Jourdan%2C+Martin%22">Jourdan, Martin</searchLink><relatesTo>2</relatesTo><i> scheffl@pil.physik.uni-stuttgart.de</i> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22European+Physical+Journal+B%3A+Condensed+Matter%22">European Physical Journal B: Condensed Matter</searchLink>. Apr2010, Vol. 74 Issue 3, p331-338. 8p. 4 Graphs. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Fermions%22">Fermions</searchLink><br /><searchLink fieldCode="DE" term="%22Microwave+spectroscopy%22">Microwave spectroscopy</searchLink><br /><searchLink fieldCode="DE" term="%22Optical+spectroscopy%22">Optical spectroscopy</searchLink><br /><searchLink fieldCode="DE" term="%22Molecular+spectroscopy%22">Molecular spectroscopy</searchLink><br /><searchLink fieldCode="DE" term="%22Electric+conductivity%22">Electric conductivity</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: Heavy-fermion compounds are characterized by electronic correlation effects at low energies which can directly be accessed with optical spectroscopy. Here we present detailed measurements of the frequency- and temperature-dependent conductivity of the heavy-fermion compound UPd2Al3 using broadband microwave spectroscopy in the frequency range 45 MHz to 40 GHz at temperatures down to 1.7 K. We observe the full Drude response with a relaxation time up to 50 ps, proving that the mass enhancement of the heavy charge carriers goes hand in hand with an enhancement of the relaxation time. We show that the relaxation rate as a function of temperature scales with the dc resistivity. We do not find any signs of a frequency-dependent relaxation rate within the addressed frequency range. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of European Physical Journal B: Condensed Matter is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1140/epjb/e2010-00085-6 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 8 StartPage: 331 Subjects: – SubjectFull: Fermions Type: general – SubjectFull: Microwave spectroscopy Type: general – SubjectFull: Optical spectroscopy Type: general – SubjectFull: Molecular spectroscopy Type: general – SubjectFull: Electric conductivity Type: general Titles: – TitleFull: Microwave conductivity of heavy fermions in UPd2Al3. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Scheffler, Marc – PersonEntity: Name: NameFull: Dressel, Martin – PersonEntity: Name: NameFull: Jourdan, Martin IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 04 Text: Apr2010 Type: published Y: 2010 Identifiers: – Type: issn-print Value: 14346028 Numbering: – Type: volume Value: 74 – Type: issue Value: 3 Titles: – TitleFull: European Physical Journal B: Condensed Matter Type: main |
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