Search Menu
DOE PAGES title logo U.S. Department of Energy
Office of Scientific and Technical Information
Search Scholarly Publications

Title: Dimensional crossover and symmetry transformation of charge density waves in VSe 2

Journal Article · · Physical Review. B
ORCiD logo [1];  [2];  [3];  [1];  [1];  [4];  [5]; ORCiD logo [6]
  1. Shanghai Jiao Tong Univ. (China)
  2. Academia Sinica, Taipei (Taiwan); National Center for Theoretical Sciences, Taipei (Taiwan)
  3. Univ. of Illinois at Urbana-Champaign, IL (United States); National Synchrotron Radiation Research Center, Hsinchu (Taiwan)
  4. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Advanced Light Source (ALS)
  5. Academia Sinica, Taipei (Taiwan); National Taiwan Univ., Taipei (Taiwan); Georgia Institute of Technology, Atlanta, GA (United States)
  6. Univ. of Illinois at Urbana-Champaign, IL (United States)
+ Show Author Affiliations

Collective phenomena in solids can be sensitive to the dimensionality of the system; a case of special interest is VSe2, which shows a (√7×√3) charge density wave (CDW) in the single layer with threefold symmetry in the normal phase spontaneously broken, in contrast to the (4×4) in-plane CDW in the bulk. Angle-resolved photoemission spectroscopy (ARPES) from VSe2 ranging from a single layer to the bulk reveals the evolution of the electronic structure including the Fermi surface contours and the CDW gap. At a thickness of two layers, the ARPES maps are already nearly bulklike, but the transition temperature TC for the (4×4) CDW is much higher than the bulk value of 110 K. These results can be understood as due to dimensional crossover of phonon instability driven by a competition of nesting vectors. Here, in this letter, we provide key insights into the CDW mechanisms and offer a perspective in the search and control of emergent phases in quantum materials.

Research Organization:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES). Scientific User Facilities Division; Ministry of Science and Technology of China; Science and Technology Commission of Shanghai Municipality; National Center for Theoretical Sciences (NCTS)
Grant/Contract Number:
AC02-05CH11231; FG02-07ER46383
OSTI ID:
1959977
Journal Information:
Physical Review. B, Journal Name: Physical Review. B Journal Issue: 16 Vol. 105; ISSN 2469-9950
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English

References (42)

Charge Instability in Single-Layer TiTe 2 Mediated by van der Waals Bonding to Substrates journal October 2020
Superconductivity in CuxTiSe2 journal July 2006
Charge density wave phase of VSe 2 revisited journal March 2019
Unique Gap Structure and Symmetry of the Charge Density Wave in Single-Layer VSe 2 journal November 2018
Large-scale uniform bilayer graphene prepared by vacuum graphitization of 6H-SiC(0001) substrates journal January 2013
Observation of the quantum spin Hall effect up to 100 kelvin in a monolayer crystal journal January 2018
X-Ray Studies of Phonon Softening in TiSe 2 journal April 2001
Strongly enhanced charge-density-wave order in monolayer NbSe2 journal July 2015
Electronic Structure and Enhanced Charge-Density Wave Order of Monolayer VSe 2 journal June 2018
Quasiparticle Spectra, Charge-Density Waves, Superconductivity, and Electron-Phonon Coupling in 2 H − N b S e 2 journal February 2004
Pseudogap and Charge Density Waves in Two Dimensions journal May 2008
Phenomenology of the low-energy spectral function in high- T c superconductors journal May 1998
Correlating structural, electronic, and magnetic properties of epitaxial V Se 2 thin films journal September 2020
Persistent Charge-Density-Wave Order in Single-Layer TaSe 2 journal January 2018
Characterization of collective ground states in single-layer NbSe2 journal November 2015
Three-Dimensional Electron Realm in VSe 2 by Soft-X-Ray Photoelectron Spectroscopy: Origin of Charge-Density Waves journal August 2012
Efficiency of ab-initio total energy calculations for metals and semiconductors using a plane-wave basis set journal July 1996
Charge-density wave transition of 1 T − V S e 2 studied by angle-resolved photoemission spectroscopy journal October 2003
X-ray-diffraction study of the periodic lattice distortion associated with a charge-density wave in 1 T -V Se 2 journal November 1982
Projector augmented-wave method journal December 1994
Efficient iterative schemes for ab initio total-energy calculations using a plane-wave basis set journal October 1996
Ab initio molecular dynamics for open-shell transition metals journal November 1993
Direct observation of the transition from indirect to direct bandgap in atomically thin epitaxial MoSe2 journal December 2013
Charge-Density Wave and Superconducting Dome in TiSe 2 from Electron-Phonon Interaction journal May 2011
Emergence of a Metal–Insulator Transition and High-Temperature Charge-Density Waves in VSe 2 at the Monolayer Limit journal July 2018
Charge-density-wave transitions in 1T-VSe 2 journal January 1986
Fermi-surface nesting and the origin of the charge-density wave in Nb Se 2 journal May 2006
Electronics and optoelectronics of two-dimensional transition metal dichalcogenides journal November 2012
Angle-resolved photoemission studies of the cuprate superconductors journal April 2003
Angle-resolved photoemission, valence-band dispersions E ( k → ) , and electron and hole lifetimes for GaAs journal April 1980
Effect of dimensionality on the charge-density wave in few-layer 2 H -NbSe 2 journal December 2009
Quantum spin Hall effect in two-dimensional transition metal dichalcogenides journal November 2014
From ultrasoft pseudopotentials to the projector augmented-wave method journal January 1999
Generalized Gradient Approximation Made Simple journal October 1996
Dimensional crossover of the charge density wave transition in thin exfoliated VSe 2 journal September 2017
A consistent and accurate ab initio parametrization of density functional dispersion correction (DFT-D) for the 94 elements H-Pu journal April 2010
On the origin of charge-density waves in select layered transition-metal dichalcogenides journal May 2011
Competition Between Antiferromagnetic and Charge-Density-Wave Order in the Half-Filled Hubbard-Holstein Model journal December 2012
Direct observation of competition between superconductivity and charge density wave order in YBa2Cu3O6.67 journal October 2012
Strain engineering a 4 a × √ 3 a charge-density-wave phase in transition-metal dichalcogenide 1 T − VS e 2 journal July 2017
First principles phonon calculations in materials science journal November 2015
Charge density wave transition in single-layer titanium diselenide journal November 2015

Similar Records

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
charge density waves
multilayer thin films
transition metal dichalcogenides
angle-resolved photoemission spectroscopy
molecular beam epitaxy