FEBS Letters最新文献_第3页

Anisotropy-driven quantum criticality in an intermediate valence system. 中间价系统中各向异性驱动的量子临界。

IF 14.7 4区生物学

FEBS Letters Pub Date : 2022-04-19 DOI: 10.1038/s41467-022-29757-9

Mihael S Grbić, Eoin C T O'Farrell, Yosuke Matsumoto, Kentaro Kuga, Manuel Brando, Robert Küchler, Andriy H Nevidomskyy, Makoto Yoshida, Toshiro Sakakibara, Yohei Kono, Yasuyuki Shimura, Michael L Sutherland, Masashi Takigawa, Satoru Nakatsuji

{"title":"Anisotropy-driven quantum criticality in an intermediate valence system.","authors":"Mihael S Grbić, Eoin C T O'Farrell, Yosuke Matsumoto, Kentaro Kuga, Manuel Brando, Robert Küchler, Andriy H Nevidomskyy, Makoto Yoshida, Toshiro Sakakibara, Yohei Kono, Yasuyuki Shimura, Michael L Sutherland, Masashi Takigawa, Satoru Nakatsuji","doi":"10.1038/s41467-022-29757-9","DOIUrl":"10.1038/s41467-022-29757-9","url":null,"abstract":"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.","PeriodicalId":50454,"journal":{"name":"FEBS Letters","volume":"9 1","pages":"2141"},"PeriodicalIF":14.7,"publicationDate":"2022-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9019086/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74609216","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}