scholarly journals Topological crystalline insulator (Pb,Sn)Te: Surface states and their spin polarization

2013 ◽  
Vol 88 (4) ◽  
Author(s):  
S. Safaei ◽  
P. Kacman ◽  
R. Buczko
Keyword(s):  
Spin Polarization ◽  
Surface States ◽  
Topological Crystalline Insulator

scholarly journals Magnetic crystalline-symmetry-protected axion electrodynamics and field-tunable unpinned Dirac cones in EuIn2As2

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
S. X. M. Riberolles ◽  
T. V. Trevisan ◽  
B. Kuthanazhi ◽  
T. W. Heitmann ◽  
F. Ye ◽  
...  
Keyword(s):  
Density Functional ◽  
Surface States ◽  
Antiferromagnetic Order ◽  
Functional Theory ◽  
Magnetic Symmetry ◽  
Integer Quantum ◽  
Symmetry Protected ◽  
Topological Crystalline Insulator ◽  
Low Symmetry ◽  
Crystalline Symmetry

AbstractKnowledge of magnetic symmetry is vital for exploiting nontrivial surface states of magnetic topological materials. EuIn2As2 is an excellent example, as it is predicted to have collinear antiferromagnetic order where the magnetic moment direction determines either a topological-crystalline-insulator phase supporting axion electrodynamics or a higher-order-topological-insulator phase with chiral hinge states. Here, we use neutron diffraction, symmetry analysis, and density functional theory results to demonstrate that EuIn2As2 actually exhibits low-symmetry helical antiferromagnetic order which makes it a stoichiometric magnetic topological-crystalline axion insulator protected by the combination of a 180∘ rotation and time-reversal symmetries: $${C}_{2}\times {\mathcal{T}}={2}^{\prime}$$ C 2 × T = 2 ′ . Surfaces protected by $${2}^{\prime}$$ 2 ′ are expected to have an exotic gapless Dirac cone which is unpinned to specific crystal momenta. All other surfaces have gapped Dirac cones and exhibit half-integer quantum anomalous Hall conductivity. We predict that the direction of a modest applied magnetic field of μ0H ≈ 1 to 2 T can tune between gapless and gapped surface states.

scholarly journals Erratum: Observation of ultrahigh mobility surface states in a topological crystalline insulator by infrared spectroscopy

2017 ◽  
Vol 8 (1) ◽  
Author(s):  
Ying Wang ◽  
Guoyu Luo ◽  
Junwei Liu ◽  
R. Sankar ◽  
Nan-Lin Wang ◽  
...  
Keyword(s):  
Infrared Spectroscopy ◽  
Surface States ◽  
Topological Crystalline Insulator

scholarly journals Surface states and Rashba-type spin polarization in antiferromagnetic MnBi2Te4 (0001)

2019 ◽  
Vol 100 (12) ◽  
Author(s):  
R. C. Vidal ◽  
H. Bentmann ◽  
T. R. F. Peixoto ◽  
A. Zeugner ◽  
S. Moser ◽  
...  
Keyword(s):  
Spin Polarization ◽  
Surface States

A methodical study of quantum phase engineering in topological crystalline insulator SnTe and related alloys

2019 ◽  
Vol 21 (38) ◽  
pp. 21633-21650 ◽  
Author(s):  
Mohsen Yarmohammadi ◽  
Kavoos Mirabbaszadeh
Keyword(s):  
Detailed Analysis ◽  
Surface States ◽  
Quantum Phase ◽  
Phase Engineering ◽  
Topological Crystalline Insulator

A detailed analysis of the perturbation effects on the quantum phase of SnTe(001) surface states.

Evidence of unusual spin polarization of the surface states of W(110) surface

2013 ◽  
Author(s):  
Deep Narayan Biswas ◽  
Partha Sarathi Mandal ◽  
Shyama R. Varier ◽  
Nishaina Sahadev ◽  
Kalobaran Maiti
Keyword(s):  
Spin Polarization ◽  
Surface States

Surface States and the Photoelectron Spin Polarization of Fe(100)

1982 ◽  
Vol 48 (5) ◽  
pp. 348-351 ◽  
Author(s):  
A. M. Turner ◽  
Yu Jeng Chang ◽  
J. L. Erskine
Keyword(s):  
Spin Polarization ◽  
Surface States
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