期刊
PHYSICAL REVIEW LETTERS
卷 124, 期 23, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.124.236601
关键词
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资金
- National Key RD Program [2016YFA0300404, 2016YFA 0401803, 2017YFA0303201, 2015CB921103, 2019YFA0308602]
- National Nature Science Foundation of China [11674326, 11674331, 11774351, 11874357, 11625415, 11374260, U1432139, U1832141, U1932217]
- Key Research Program of Frontier Sciences, CAS [QYZDB-SSW-SLH015]
- Strategic Priority Research Program (B) of the Chinese Academy of Sciences [XDB33030100]
- 100 Talents Project of the Chinese Academy of Sciences, CASHIPS Director's Fund [BJPY2019B03]
- Science Challenge Project [TZ2016001]
- High Magnetic Field Laboratory of Anhui Province
- Fundamental Research Funds for the Central Universities in China
- European Research Council under the European Union's Seventh Framework Program (FP/2007-2013) through ERC Grant [338957]
- NWO via Spinoza Prize
- Cluster of Excellence The Hamburg Centre for Ultrafast Imaging (CUI) of the German Science Foundation (DFG)
The nodal-line semimetals have attracted immense interest due to the unique electronic structures such as the linear dispersion and the vanishing density of states as the Fermi energy approaching the nodes. Here, we report temperature-dependent transport and scanning tunneling microscopy (spectroscopy) [STM(S)] measurements on nodal-line semimetal ZrSiSe. Our experimental results and theoretical analyses consistently demonstrate that the temperature induces Lifshitz transitions at 80 and 106 K in ZrSiSe, which results in the transport anomalies at the same temperatures. More strikingly, we observe a V-shaped dip structure around Fermi energy from the STS spectrum at low temperature, which can be attributed to co-effect of the spin-orbit coupling and excitonic instability. Our observations indicate the correlation interaction may play an important role in ZrSiSe, which owns the quasi-two-dimensional electronic structures.
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