Pregled bibliografske jedinice broj: 1190043
Anisotropy-driven quantum criticality in an intermediate valence system
Anisotropy-driven quantum criticality in an intermediate valence system // Nature communications, 13 (2022), 1-8 doi:10.1038/s41467-022-29757-9 (međunarodna recenzija, članak, znanstveni)
CROSBI ID: 1190043 Za ispravke kontaktirajte CROSBI podršku putem web obrasca
Naslov
Anisotropy-driven quantum criticality in an
intermediate valence system
Autori
Grbić, Mihael S. ; O’Farrell, Eoin C. T. ; Matsumoto, Yosuke ; Kuga, Kentaro ; Brando, Manuel ; Küchler, Robert ; Nevidomskyy, Andriy H. ; Yoshida, Makoto ; Sakakibara, Toshiro ; Kono, Yohei ; Shimura, Yasuyuki ; Sutherland, Michael L. ; Takigawa, Masashi ; Nakatsuji, Satoru
Izvornik
Nature communications (2041-1723) 13
(2022);
1-8
Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni
Ključne riječi
intermediate valence ; anisotropy ; quantum criticality
(necjelobrojna valencija ; anizotropija ; kvantna kritičnost)
Sažetak
Intermetallic compounds containing f-electron elements have been prototypical materials for investigating strong electron correlations and quantum criticality (QC). Their heavy fermion ground state evoked by the magnetic f-electrons is susceptible to the onset of quantum phases, such as magnetism or superconductivity, due to the enhanced effective mass (m*) and a corresponding decrease of the Fermi temperature. However, the presence of f-electron valence fluctuations to a non-magnetic state is regarded an anathema to QC, as it usually generates a paramagnetic Fermi- liquid state with quasiparticles of moderate m*. Such systems are typically isotropic, with a characteristic energy scale T0 of the order of hundreds of kelvins that require large magnetic fields or pressures to promote a valence or magnetic instability. Here we show the discovery of a quantum critical behaviour and a Lifshitz transition under low magnetic field in an intermediate valence compound α-YbAlB4. The QC origin is attributed to the anisotropic hybridization between the conduction and localized f-electrons. These findings suggest a new route to bypass the large valence energy scale in developing the QC.
Izvorni jezik
Engleski
Znanstvena područja
Fizika, Kemija
POVEZANOST RADA
Projekti:
HRZZ-IP-2018-01-2970 - Mikroskopska istraživanja induciranih faza u jako koreliranim elektronskim sustavima (MicroS) (Požek, Miroslav, HRZZ - 2018-01) ( CroRIS)
HRZZ-20/15 - Kvantno kritična materija u jako koreliranim elektronskim sustavima (Quantum CorES) (Grbić, Mihael Srđan, HRZZ ) ( CroRIS)
EK-EFRR-KK.01.1.1.02.0013 - Centar za Napredna Istraživanja Kompleksnih Sustava (CeNIKS) (Grbić, Mihael Srđan; Tafra, Emil, EK - KK.01.1.1.02) ( CroRIS)
Ustanove:
Prirodoslovno-matematički fakultet, Zagreb
Profili:
Mihael Srđan Grbić
(autor)
Citiraj ovu publikaciju:
Časopis indeksira:
- Current Contents Connect (CCC)
- Web of Science Core Collection (WoSCC)
- Science Citation Index Expanded (SCI-EXP)
- SCI-EXP, SSCI i/ili A&HCI
- Scopus
- MEDLINE
- Nature Index