DOE PAGES title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Photon energy and polarization-dependent electronic structure of Cr-doped Bi 2 Se 3

Journal Article · · Physical Review Materials
ORCiD logo [1];  [2];  [1];  [1];  [3]
  1. Brookhaven National Lab. (BNL), Upton, NY (United States). National Synchrotron Light Source II (NSLS-II)
  2. Brookhaven National Lab. (BNL), Upton, NY (United States). Condensed Matter Physics and Materials Science Dept.
  3. Univ. of Connecticut, Storrs, CT (United States)

In this article, we report a comparative study of the electronic structure of Cr-doped and pristine Bi2Se3. Circular dichroism and photon-energy-dependent angle-resolved photoemission experiments were performed. Even though the surface states seen on the Cr-doped samples are gapped, they exhibit strong circular dichroism, for which we provide its origin in accordance with the nontrivial band structure of the bulk. We note the surface electronic structure measurements with linear and circular polarized light show signatures that the orbital composition of the surface states is changed with Cr doping. Our observations not only provide further spectroscopic information about topological materials, but also promotes an alternative experimental tool to control their spin-orbital texture.

Research Organization:
Brookhaven National Laboratory (BNL), Upton, NY (United States). National Synchrotron Light Source II (NSLS-II)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES); University of Connecticut; USDOE Laboratory Directed Research and Development (LDRD) Program
Grant/Contract Number:
SC0012704; 4626510
OSTI ID:
1603288
Report Number(s):
BNL-213681-2020-JAAM; PRMHAR; TRN: US2104080
Journal Information:
Physical Review Materials, Vol. 4, Issue 2; ISSN 2475-9953
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 4 works
Citation information provided by
Web of Science

References (62)

Topological insulators and superconductors journal October 2011
Disentangling surface and bulk photoemission using circularly polarized light journal July 2007
Spin-Orbital Texture in Topological Insulators journal August 2013
Strong potential impurities on the surface of a topological insulator journal March 2012
Common Origin of the Circular-Dichroism Pattern in Angle-Resolved Photoemission Spectroscopy of SrTiO 3 and Cu x Bi 2 Se 3 journal August 2011
Experimental Realization of a Three-Dimensional Topological Insulator, Bi2Te3 journal June 2009
Coexistence of the topological state and a two-dimensional electron gas on the surface of Bi2Se3 journal November 2010
Photoelectron Spectroscopy book January 2003
A tunable topological insulator in the spin helical Dirac transport regime text January 2009
Systematics of electronic and magnetic properties in the transition metal doped $Sb_{2}Te_{3}$ quantum anomalous Hall platform text January 2018
Topological phases and the quantum spin Hall effect in three dimensions journal May 2009
Ferromagnetism in vanadium-doped Bi 2 Se 3 topological insulator films journal July 2017
Magnetic impurity mediated ultrafast electron dynamics in the carrier-density-tuned topological insulator V 0.04 ( Bi x Sb 1 − x ) 2 Te 3 journal March 2019
A topological insulator surface under strong Coulomb, magnetic and disorder perturbations journal December 2010
Crossover of the three-dimensional topological insulator Bi2Se3 to the two-dimensional limit journal June 2010
Controllable Magnetic Doping of the Surface State of a Topological Insulator journal March 2013
Crossover between Weak Antilocalization and Weak Localization in a Magnetically Doped Topological Insulator journal January 2012
Photoelectron spin-flipping and texture manipulation in a topological insulator journal March 2013
A tunable topological insulator in the spin helical Dirac transport regime journal July 2009
The effect of van der Waal's gap expansions on the surface electronic structure of layered topological insulators journal November 2012
Magnetic dichroism in valence band photoemission journal January 2001
Topology-Driven Magnetic Quantum Phase Transition in Topological Insulators journal March 2013
Massive Dirac Fermion on the Surface of a Magnetically Doped Topological Insulator journal August 2010
The birth of topological insulators journal March 2010
High-precision realization of robust quantum anomalous Hall state in a hard ferromagnetic topological insulator journal March 2015
Model Hamiltonian for topological insulators journal July 2010
Topological insulators with inversion symmetry journal July 2007
d x z / y z orbital subband structures and chiral orbital angular momentum in the (001) surface states of SrTiO 3 journal March 2017
Experimental Observation of the Quantum Anomalous Hall Effect in a Magnetic Topological Insulator journal March 2013
Mapping the orbital wavefunction of the surface states in three-dimensional topological insulators journal July 2013
Distinct effects of Cr bulk doping and surface deposition on the chemical environment and electronic structure of the topological insulator Bi2Se3 journal June 2017
Transport and magnetic properties of Cr-, Fe-, Cu-doped topological insulators journal April 2011
Observation of a large-gap topological-insulator class with a single Dirac cone on the surface journal May 2009
Subsurface impurities and vacancies in a three-dimensional topological insulator journal September 2012
Topological insulators in Bi2Se3, Bi2Te3 and Sb2Te3 with a single Dirac cone on the surface journal May 2009
Nonmagnetic band gap at the Dirac point of the magnetic topological insulator (Bi1−xMnx)2Se3 journal February 2016
Photon energy dependence of circular dichroism in angle-resolved photoemission spectroscopy of Bi 2 Se 3 Dirac states journal December 2013
Emergent quantum confinement at topological insulator surfaces journal January 2012
Photoemission Circular Dichroism and Spin Polarization of the Topological Surface States in Ultrathin Bi 2 Te 3 Films journal June 2015
Orbital-selective spin texture and its manipulation in a topological insulator journal February 2014
Topological Insulators in Three Dimensions journal March 2007
Layer-By-Layer Entangled Spin-Orbital Texture of the Topological Surface State in Bi 2 Se 3 journal May 2013
Model for a Quantum Hall Effect without Landau Levels: Condensed-Matter Realization of the "Parity Anomaly" journal October 1988
Reversal of the Circular Dichroism in Angle-Resolved Photoemission from Bi 2 Te 3 journal May 2013
Topological invariants of time-reversal-invariant band structures journal March 2007
Origin of the low critical observing temperature of the quantum anomalous Hall effect in V-doped (Bi, Sb)2Te3 film journal September 2016
Hedgehog spin texture and Berry’s phase tuning in a magnetic topological insulator journal June 2012
Quantized Anomalous Hall Effect in Magnetic Topological Insulators journal June 2010
Dipole selection rules for optical transitions in the fcc and bcc lattices journal June 1980
Photoelectron Spectroscopy book January 1995
Interplay between ferromagnetism, surface states, and quantum corrections in a magnetically doped topological insulator journal November 2012
Visualizing Electronic Chirality and Berry Phases in Graphene Systems Using Photoemission with Circularly Polarized Light journal October 2011
Circular Dichroism and Spin Polarization in Photoemission from Adsorbates and Non-Magnetic Solids journal January 1990
Crossover between weak localization and weak antilocalization in magnetically doped topological insulator text January 2011
A topological insulator surface under strong Coulomb, magnetic and disorder perturbations text January 2011
Interplay between ferromagnetism, surface states, and quantum corrections in a magnetically doped topological insulator text January 2012
Spin-orbital Texture in Topological Insulators text January 2012
Photoelectron spin-flipping and texture manipulation in a topological insulator text January 2013
High-precision realization of robust quantum anomalous Hall state in a hard ferromagnetic topological insulator text January 2014
Experimental Observation of the Quantum Anomalous Hall Effect in a Magnetic Topological Insulator text January 2016
Topological invariants of time-reversal-invariant band structures text January 2006
Topological Insulators in Three Dimensions text January 2006