Jorba, Pau ORCID: 0000-0003-1961-7142, Regnat, Alexander, Tong, Anh, Seifert, Marc, Bauer, Andreas, Schulz, Michael, Franz, Christian, Schneidewind, Astrid ORCID: 0000-0002-7239-9888, Kunkemoeller, Stefan, Jenni, Kevin, Braden, Markus ORCID: 0000-0002-9284-6585, Deyerling, Andre, Wilde, Marc A., Schilling, James S. and Pfleiderer, Christian (2022). High-Pressure Studies of Correlated Electron Systems. Phys. Status Solidi B-Basic Solid State Phys., 259 (5). WEINHEIM: WILEY-V C H VERLAG GMBH. ISSN 1521-3951

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Abstract

Tuning the electronic properties of transition-metal and rare-earth compounds by virtue of changes of the crystallographic lattice constants offers controlled access to new forms of order. The development of tungsten carbide (WC) and moissanite Bridgman cells conceived for studies of the electrical resistivity up to 10 GPa, as well as bespoke diamond anvil cells (DACs) developed for neutron depolarization studies up to 20 GPa is reviewed. For the DACs, the applied pressure changes as a function of temperature in quantitative agreement with the thermal expansion of the pressure cell. A setup is described that is based on focusing neutron guides for measurements of the depolarization of a neutron beam by samples in a DAC. The technical progress is illustrated in terms of three examples. Measurements of the resistivity and neutron depolarization provide evidence of ferromagnetic order in SrRuO3 up to 14 GPa close to a putative quantum phase transition. Combining hydrostatic, uniaxial, and quasi-hydrostatic pressure, the emergence of incipient superconductivity in CrB2 is observed. The temperature dependence of the electrical resistivity in CeCuAl3 is consistent with emergent Kondo correlations and an enhanced coupling of magneto-elastic excitations with the conduction electrons at low and intermediate temperatures, respectively.

Item Type: Journal Article
Creators:
CreatorsEmailORCIDORCID Put Code
Jorba, PauUNSPECIFIEDorcid.org/0000-0003-1961-7142UNSPECIFIED
Regnat, AlexanderUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Tong, AnhUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Seifert, MarcUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Bauer, AndreasUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Schulz, MichaelUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Franz, ChristianUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Schneidewind, AstridUNSPECIFIEDorcid.org/0000-0002-7239-9888UNSPECIFIED
Kunkemoeller, StefanUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Jenni, KevinUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Braden, MarkusUNSPECIFIEDorcid.org/0000-0002-9284-6585UNSPECIFIED
Deyerling, AndreUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Wilde, Marc A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Schilling, James S.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Pfleiderer, ChristianUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
URN: urn:nbn:de:hbz:38-679753
DOI: 10.1002/pssb.202100623
Journal or Publication Title: Phys. Status Solidi B-Basic Solid State Phys.
Volume: 259
Number: 5
Date: 2022
Publisher: WILEY-V C H VERLAG GMBH
Place of Publication: WEINHEIM
ISSN: 1521-3951
Language: English
Faculty: Unspecified
Divisions: Unspecified
Subjects: no entry
Uncontrolled Keywords:
KeywordsLanguage
INELASTIC NEUTRON-SCATTERING; TELLER PHASE-TRANSITION; DIAMOND-ANVIL CELL; MAGNETIC EXCITATIONS; CRYSTAL-FIELD; THERMAL-CONDUCTIVITY; FLUORESCENCE LINE; LOW-TEMPERATURES; BOUND-STATE; SUPERCONDUCTIVITYMultiple languages
Physics, Condensed MatterMultiple languages
URI: http://kups.ub.uni-koeln.de/id/eprint/67975

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