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Related papers: Charge-Density-Wave Proximity Effects in Graphene

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Transition metal dichalcogenides (TMDs) in the $1T$ polymorph are subject to a rich variety of periodic lattice distortions, often referred to as charge density waves (CDW) when not too strong. We study from first principles the fermiology…

Mesoscale and Nanoscale Physics · Physics 2019-11-20 Diego Pasquier , Oleg V. Yazyev

We study the phases of correlated charge-density waves that form at a high magnetic field in two parallel graphene flakes separated by a thin insulator. The predicted phases include the square and hexagonal charge-density-wave bubbles, and…

Mesoscale and Nanoscale Physics · Physics 2014-10-28 Csaba Toke , Vladimir I. Fal'ko

There has been a recent renewal of interest in charge-density-wave (CDW) phenomena, primarily driven by the emergence of two-dimensional (2D) layered CDW materials, such as 1T-TaS2, characterized by very high transition temperatures to CDW…

Mesoscale and Nanoscale Physics · Physics 2019-03-18 Guanxiong Liu , Sergey Rumyantsev , Matthew. A. Bloodgood , Tina T. Salguero , Alexander A. Balandin

We propose a theory for quasi-two-dimensional transition metal dichalcogenides that provides a unified microscopic picture of the charge density wave (CDW) and superconducting phases. We show, based on the electron-phonon coupling and Fermi…

Strongly Correlated Electrons · Physics 2009-10-31 Antonio H. Castro Neto

We present the first experimental evidence for metallicity, superconductivity (SC) and the co-existence of charge density waves (CDW) in the quasi-one-dimensional material HfTe3. The existence of such phenomena is a typical characteristic…

Organic charge-transfer complexes (CTCs) formed by strong electron acceptor and strong electron donor molecules are known to exhibit exotic effects such as superconductivity and charge density waves. We present a low-temperature scanning…

Mesoscale and Nanoscale Physics · Physics 2021-06-24 Avijit Kumar , Kaustuv Banerjee , Mikko M. Ervasti , Shawulienu Kezilebieke , Marc Dvorak , Patrick Rinke , Ari Harju , Peter Liljeroth

Atomically thin materials such as graphene and semiconducting transition metal dichalcogenides have attracted extensive interest in recent years, motivating investigation into multiple properties. In this work, we used the opto thermal…

Materials Science · Physics 2021-03-09 Elham Easy , Yuan Gao , Yingtao Wang , Dingkai Yan , Seyed M. Goushehgir , Eui-Hyeok Yang , Baoxing Xu , Xian Zhang

Using temperature dependent Raman spectroscopy we address the question of how the transition from bulk to few atomic layers affects the charge density wave (CDW) phases in 1T-TaS2. We find that for crystals with thickness larger than approx…

Mesoscale and Nanoscale Physics · Physics 2019-10-30 Adina Luican-Mayer , Jeffrey R. Guest , Saw-Wai Hla

Pair density wave (PDW) states are defined by a spatially modulating superconductive order-parameter. To search for such states in transition metal dichalcogenides (TMD) we use high-speed atomic-resolution scanned Josephson-tunneling…

Superconductivity · Physics 2021-06-29 Xiaolong Liu , Yi Xue Chong , Rahul Sharma , J. C. Séamus Davis

The capability to isolate one to few unit-cell thin layers from the bulk matrix of layered compounds opens fascinating prospects to engineer novel electronic phases. However, a comprehensive study of the thickness dependence and of…

Strongly Correlated Electrons · Physics 2017-09-06 Árpád Pásztor , Alessandro Scarfato , Céline Barreteau , Enrico Giannini , Christoph Renner

Understanding the coexistence, competition and/or cooperation between superconductivity and charge density waves (CDWs) in the transition metal dichalcogenides (TMDs) is an elusive goal which, when realized, promises to reveal fundamental…

Superconductivity · Physics 2017-08-15 Ang J. Li , Xiaochen Zhu , G. R. Stewart , Arthur F. Hebard

Transport studies of atomically thin 1T-TaS2 have demonstrated the presence of intermediate resistance states across the nearly commensurate (NC) to commensurate (C) charge density wave (CDW) transition, which can be further switched…

Materials Science · Physics 2020-09-29 Tarun Patel , Junichi Okamoto , Tina Dekker , Bowen Yang , Jingjing Gao , Xuan Luo , Wenjian Lu , Yuping Sun , Adam W. Tsen

The quasiparticle spectra of atomically thin semiconducting transition metal dichalcogenides (TMDCs) and their response to an ultrafast optical excitation critically depend on interactions with the underlying substrate. Here, we present a…

We report a rectangular charge density wave (CDW) phase in strained 1T-VSe$_2$ thin films synthesized by molecular beam epitaxy on c-sapphire substrates. The observed CDW structure exhibits an unconventional rectangular…

Placing and twisting graphene on transition metal dichalcogenides (TMDC) forms a van der Waals (vdW) heterostructure. The occurrence of Zeeman splitting and Rashba spin-orbit coupling (SOC) changes graphene's linear dispersion and…

Mesoscale and Nanoscale Physics · Physics 2023-12-04 Ruoyang Cui , Yaojin Li

One-dimensional (1D) metallic mirror-twin boundaries (MTBs) in monolayer transition metal dichalcogenides (TMDCs) exhibit a periodic charge modulation and provide an ideal platform for exploring collective electron behavior in the confined…

Materials Science · Physics 2020-07-21 Li Wang , Ying Wu , Yayun Yu , Aixi Chen , Huifang Li , Wei Ren , Shuai Lu , Sunan Ding , Hui Yang , Qi-Kun Xue , Fang-Sen Li , Guang Wang

Gaining a deeper understanding of the interplay between charge density wave (CDW) order and superconductivity in transition metal dichalcogenides (TMDs), particularly within the (4H/2H)-NbX$_{2}$ (X=Se,S) family, remains an open and…

Charge density wave (CDW) phases are symmetry-reduced states of matter in which a periodic modulation of the electronic charge frequently leads to drastic changes of the electronic spectrum, including the emergence of energy gaps. We…

Mesoscale and Nanoscale Physics · Physics 2017-06-30 Bahadur Singh , Chuang-Han Hsu , Wei-Feng Tsai , Vitor M. Pereira , Hsin Lin

Strongly correlated materials possess a complex energy landscape and host many interesting physical phenomena, including charge density waves (CDWs). CDWs have been observed and extensively studied in many materials since their first…

Materials Science · Physics 2020-09-14 Weijian Li , Gururaj V. Naik

The occurrence of charge density wave (CDW) phenomena, particularly in low dimensional rare-earth chalcogenides, has attracted substantial research interest. Among these materials, EuTe4, which features multiple Te layers and a single Eu-Te…