The 7 × 1 Fermi Surface Reconstruction in a Two-dimensional f -electron Charge Density Wave System: PrTe3

Lee, Eun-Sook; Kim, D. H.; Kim, Hyun Woo; Denlinger, Jonathan D.; Kim, Heejung; Kim, Jun Won; Kim, Kyoo; Min, B. I.; Min, Baehyun; Kwon, Yong Seung; Kang, J. S.

doi:10.1038/srep30318

Cited by 18 publications

(5 citation statements)

References 47 publications

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“…We note that the in-gap photoemission intensity observed here is consistent with previous ARPES studies of RTe 3 [2,4,15,18,21]. However, the phenomenon was not discussed.…”

supporting

confidence: 92%

“…Moreover, recent studies of de Haas van Alphen and Shubnikov-de Haas QOs in high mobility crystals have revealed high-frequency QOs that should originate from large FS elements, covering a substantial fraction of the Brillouin zone (BZ) [7,13]. However, there are no obvious candidates for such large FS elements in the CDW phase, since the CDW is expected to lead to a large gap in most of the BZ, as has been confirmed by angle-resolved photoemission spectroscopy (ARPES) in numerous studies [2,3,[13][14][15][16][17][18][19][20][21]. The assignment of most of the observed QOs to FS elements is still an outstanding problem.…”

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confidence: 96%

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Charge density wave generated Fermi surfaces in NdTe3

et al. 2023

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The electronic structure of NdTe 3 in the charge density wave phase (CDW) is investigated by angle-resolved photoemission spectroscopy. The combination of high-quality crystals and careful surface preparation reveals subtle and previously unobserved details in the Fermi surface topology, allowing an interpretation of the rich and unexplained quantum oscillations in the rare earth tritellurides RTe 3 . In particular, several closed Fermi surface elements can be observed that are related to CDW-induced replicas of the original bands, leading to the curious situation in which a CDW does not only remove Fermi surface elements but creates new ones that are observable in transport experiments. Moreover, a large residual Fermi surface is found in the CDW gap, very close to the position of the gapped normal-state Fermi surface. Its area agrees very well with high-frequency quantum oscillations in NdTe 3 and its presence is explained by either a phase separation between normal state and CDW regions or by strong electron-phonon coupling combined with the quasi one-dimensional character of the CDW. Finally, we identify the origin of the low-frequency α quantum oscillations ubiquitous for the lighter R elements in the RTe 3 family and responsible for the high mobility in these compounds.

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“…We note that the in-gap photoemission intensity observed here is consistent with previous ARPES studies of RTe 3 [2,4,15,18,21]. However, the phenomenon was not discussed.…”

supporting

confidence: 92%

mentioning

confidence: 96%

Charge density wave generated Fermi surfaces in NdTe3

et al. 2023

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“…4 b, c). This gap has been referred to as the CDW gap in LaTe 3 36 and other RTe 3 systems 45 , 49 , 50 , 62 , 64 . A discussion about the variation of the CDW gap of LaTe 3 with k x and k y is provided in the Supplementary Note 5 .…”

Section: Resultsmentioning

confidence: 99%

Charge density wave induced nodal lines in LaTe3

et al. 2023

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LaTe3 is a non-centrosymmetric material with time reversal symmetry, where the charge density wave is hosted by the Te bilayers. Here, we show that LaTe3 hosts a Kramers nodal line—a twofold degenerate nodal line connecting time reversal-invariant momenta. We use angle-resolved photoemission spectroscopy, density functional theory with an experimentally reported modulated structure, effective band structures calculated by band unfolding, and symmetry arguments to reveal the Kramers nodal line. Furthermore, calculations confirm that the nodal line imposes gapless crossings between the bilayer-split charge density wave-induced shadow bands and the main bands. In excellent agreement with the calculations, spectroscopic data confirm the presence of the Kramers nodal line and show that the crossings traverse the Fermi level. Furthermore, spinless nodal lines—completely gapped out by spin-orbit coupling—are formed by the linear crossings of the shadow and main bands with a high Fermi velocity.

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“…Rare earth tellurides (ReTe x ) exhibit a diverse range of intriguing properties including charge density waves (CDW) [1][2][3][4], two-dimensional (2D) magnetism [5,6], as well as thermal hysteresis effects on resistivity and CDW gap [7,8], making them promising candidates for studying electron correlation phenomena and various applications in spintronics. Among these materials, europium tellurides are particularly unique due to the half-filled 4f orbital of the Eu atom ([Xe] 4f 7 6s 2 ).…”

Section: Introductionmentioning

confidence: 99%

Tailoring the Structure and Properties of Epitaxial Europium Tellurides on Si(100) through Substrate Temperature Control

Yu,

Qiu,

Zhou

et al. 2023

Materials

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In this study, we improved the growth procedure of EuTe and realized the epitaxial growth of EuTe4. Our research demonstrated a selective growth of both EuTe and EuTe4 on Si(100) substrates using the molecular beam epitaxy (MBE) technique and reveals that the substrate temperature plays a crucial role in determining the structural phase of the grown films: EuTe can be obtained at a substrate temperature of 220 °C while lowering down the temperature to 205 °C leads to the formation of EuTe4. A comparative analysis of the transmittance spectra of these two films manifested that EuTe is a semiconductor, whereas EuTe4 exhibits charge density wave (CDW) behavior at room temperature. The magnetic measurements displayed the antiferromagnetic nature in EuTe and EuTe4, with Néel temperatures of 10.5 and 7.1 K, respectively. Our findings highlight the potential for controllable growth of EuTe and EuTe4 thin films, providing a platform for further exploration of magnetism and CDW phenomena in rare earth tellurides.

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The 7 × 1 Fermi Surface Reconstruction in a Two-dimensional f -electron Charge Density Wave System: PrTe3

Cited by 18 publications

References 47 publications

Charge density wave generated Fermi surfaces in NdTe3

Charge density wave generated Fermi surfaces in NdTe3

Charge density wave induced nodal lines in LaTe3

Tailoring the Structure and Properties of Epitaxial Europium Tellurides on Si(100) through Substrate Temperature Control

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