skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Imaging electronic states on topological semimetals using scanning tunneling microscopy

Journal Article · · New Journal of Physics

Following the intense studies on topological insulators, significant efforts have recently been devoted to the search for gapless topological systems. These materials not only broaden the topological classification of matter but also provide a condensed matter realization of various relativistic particles and phenomena previously discussed mainly in high energy physics. Weyl semimetals host massless, chiral, low-energy excitations in the bulk electronic band structure, whereas a symmetry protected pair of Weyl fermions gives rise to massless Dirac fermions.Weemployed scanning tunneling microscopy/spectroscopy to explore the behavior of electronic states both on the surface and in the bulk of topological semimetal phases. By mapping the quasiparticle interference (QPI) and emerging Landau levels at high magnetic field in Dirac semimetals Cd3As2 and Na3Bi, we observed extended Dirac-like bulk electronic bands. QPI imaged on Weyl semimetal TaAs demonstrated the predicted momentum dependent delocalization of Fermi arc surface states in the vicinity of the surface projected Weyl nodes.

Research Organization:
Univ. of California, Los Angeles, CA (United States); Princeton Univ., NJ (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES); USDOE Office of Secretary of Energy (S)
Grant/Contract Number:
FG02-05ER46200; SC0011978; SC0016239
OSTI ID:
1329265
Alternate ID(s):
OSTI ID: 1329266; OSTI ID: 1374812
Journal Information:
New Journal of Physics, Journal Name: New Journal of Physics Vol. 18 Journal Issue: 10; ISSN 1367-2630
Publisher:
IOP PublishingCopyright Statement
Country of Publication:
United Kingdom
Language:
English
Citation Metrics:
Cited by: 23 works
Citation information provided by
Web of Science

References (64)

Observation of Dirac Node Formation and Mass Acquisition in a Topological Crystalline Insulator journal August 2013
Quantum Criticality between Topological and Band Insulators in 3 + 1 Dimensions journal November 2011
Three-dimensional Dirac semimetal and quantum transport in Cd 3 As 2 journal September 2013
Observation of Fermi arc surface states in a topological metal journal December 2014
Discovery of a Weyl fermion state with Fermi arcs in niobium arsenide journal August 2015
Quasiparticle interference of the Fermi arcs and surface-bulk connectivity of a Weyl semimetal journal March 2016
Quantum Phase Transitions from Topology in Momentum Space book January 2007
Existence of bulk chiral fermions and crystal symmetry journal April 2012
Chern Semimetal and the Quantized Anomalous Hall Effect in HgCr 2 Se 4 journal October 2011
Dirac Semimetal in Three Dimensions journal April 2012
Weyl Semimetal Phase in Noncentrosymmetric Transition-Metal Monophosphides journal March 2015
Topological nodal semimetals journal December 2011
Topological surface states protected from backscattering by chiral spin texture journal August 2009
Experimental Discovery of Weyl Semimetal TaAs journal July 2015
Topological response in Weyl semimetals and the chiral anomaly journal September 2012
Dirac Fermions in Solids: From High-T c Cuprates and Graphene to Topological Insulators and Weyl Semimetals journal March 2014
Transport evidence for Fermi-arc-mediated chirality transfer in the Dirac semimetal Cd3As2 journal July 2016
Direct imaging of the two-dimensional Fermi contour: Fourier-transform STM journal March 1998
Topological Phase Transition and Texture Inversion in a Tunable Topological Insulator journal March 2011
Observation of Weyl nodes in TaAs journal August 2015
Imaging standing waves in a two-dimensional electron gas journal June 1993
Unexpected mass acquisition of Dirac fermions at the quantum phase transition of a topological insulator journal August 2011
Weyl semimetal phase in the non-centrosymmetric compound TaAs journal August 2015
Emergent cpt Violation from the Splitting of Fermi Points journal May 2005
Intra-unit-cell electronic nematicity of the high-Tc copper-oxide pseudogap states journal July 2010
Landau quantization and quasiparticle interference in the three-dimensional Dirac semimetal Cd3As2 journal June 2014
Absence of neutrinos on a lattice journal December 1981
Evidence for the chiral anomaly in the Dirac semimetal Na3Bi journal September 2015
Bulk crystal growth and electronic characterization of the 3D Dirac semimetal Na 3 Bi journal April 2015
Atomic-Scale Visualization of Quantum Interference on a Weyl Semimetal Surface by Scanning Tunneling Microscopy journal December 2015
Imaging Quasiparticle Interference in Bi2Sr2CaCu2O8+δ journal July 2002
Experimental discovery of a topological Weyl semimetal state in TaP journal November 2015
Theoretical investigation of the evolution of the topological phase of Bi 2 Se 3 under mechanical strain journal August 2011
Anomalous orbital magnetism in Dirac-electron systems: Role of pseudospin paramagnetism journal May 2010
Absence of neutrinos on a lattice journal July 1981
Criteria for Directly Detecting Topological Fermi Arcs in Weyl Semimetals journal February 2016
High-resolution tunnelling spectroscopy of a graphene quartet journal September 2010
Elektron und Gravitation. I journal May 1929
Momentum-resolved Landau-level spectroscopy of Dirac surface state in Bi 2 Se 3 journal August 2010
Discovery of a Three-Dimensional Topological Dirac Semimetal, Na3Bi journal January 2014
Spin Polarization and Texture of the Fermi Arcs in the Weyl Fermion Semimetal TaAs journal March 2016
Universal signatures of Fermi arcs in quasiparticle interference on the surface of Weyl semimetals journal January 2016
Real-Space Observation of Drift States in a Two-Dimensional Electron System at High Magnetic Fields journal February 2003
Weyl Semimetal in a Topological Insulator Multilayer journal September 2011
Discovery of a Weyl fermion semimetal and topological Fermi arcs journal July 2015
Weyl semimetals from noncentrosymmetric topological insulators journal October 2014
Dirac semimetal and topological phase transitions in A 3 Bi ( A = Na , K, Rb) journal May 2012
Quantum oscillations from surface Fermi arcs in Weyl and Dirac semimetals journal October 2014
The Adler-Bell-Jackiw anomaly and Weyl fermions in a crystal journal November 1983
Magneto-optical conductivity of Weyl semimetals journal June 2013
Visualizing weakly bound surface Fermi arcs and their correspondence to bulk Weyl fermions journal August 2016
Accidental Degeneracy in the Energy Bands of Crystals journal August 1937
Chiral anomaly and classical negative magnetoresistance of Weyl metals journal September 2013
Observation of a three-dimensional topological Dirac semimetal phase in high-mobility Cd3As2 journal May 2014
Experimental Realization of a Three-Dimensional Dirac Semimetal journal July 2014
Phase transition between the quantum spin Hall and insulator phases in 3D: emergence of a topological gapless phase journal September 2007
The Anomalous Hall Effect and Magnetic Monopoles in Momentum Space journal October 2003
Time-reversal invariant realization of the Weyl semimetal phase journal January 2012
Anomalous transport of Weyl fermions in Weyl semimetals journal February 2014
Topological semimetal and Fermi-arc surface states in the electronic structure of pyrochlore iridates journal May 2011
A Weyl Fermion semimetal with surface Fermi arcs in the transition metal monopnictide TaAs class journal June 2015
Absence of neutrinos on a lattice: Proof by homotopy theory journal February 1982
Observation of a three-dimensional topological Dirac semimetal phase in high-mobility Cd3As2 journal May 2014
Experimental discovery of a topological Weyl semimetal state in TaP journal November 2015

Cited By (5)

Fermi Arcs and DC Transport in Nanowires of Dirac and Weyl Semimetals journal December 2019
Quasiparticle interference on type-I and type-II Weyl semimetal surfaces: a review journal January 2018
Systematic analysis for triple points in all magnetic symmorphic systems and symmetry-allowed coexistence of Dirac points and triple points journal December 2018
Hydrodynamics of Fermi arcs: Bulk flow and surface collective modes journal April 2019
Chaotic transport of electron wave packet in Weyl semimetal slab journal May 2019