TY - JOUR
T1 - Experimental realization of a three-dimensional dirac semimetal
AU - Borisenko, Sergey
AU - Gibson, Quinn
AU - Evtushinsky, Danil
AU - Zabolotnyy, Volodymyr
AU - Büchner, Bernd
AU - Cava, Robert J.
PY - 2014/7/8
Y1 - 2014/7/8
N2 - We report the direct observation of the three-dimensional (3D) Dirac semimetal phase in cadmium arsenide (Cd3As2) by means of angle-resolved photoemission spectroscopy. We identify two momentum regions where electronic states that strongly disperse in all directions form narrow conelike structures, and thus prove the existence of the long sought 3D Dirac points. This electronic structure naturally explains why Cd3As2 has one of the highest known bulk electron mobilities. This realization of a 3D Dirac semimetal in Cd3As2 not only opens a direct path to a wide spectrum of applications, but also offers a robust platform for engineering topologically nontrivial phases including Weyl semimetals and quantum spin Hall systems.
AB - We report the direct observation of the three-dimensional (3D) Dirac semimetal phase in cadmium arsenide (Cd3As2) by means of angle-resolved photoemission spectroscopy. We identify two momentum regions where electronic states that strongly disperse in all directions form narrow conelike structures, and thus prove the existence of the long sought 3D Dirac points. This electronic structure naturally explains why Cd3As2 has one of the highest known bulk electron mobilities. This realization of a 3D Dirac semimetal in Cd3As2 not only opens a direct path to a wide spectrum of applications, but also offers a robust platform for engineering topologically nontrivial phases including Weyl semimetals and quantum spin Hall systems.
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U2 - 10.1103/PhysRevLett.113.027603
DO - 10.1103/PhysRevLett.113.027603
M3 - Article
C2 - 25062235
AN - SCOPUS:84904112804
SN - 0031-9007
VL - 113
JO - Physical review letters
JF - Physical review letters
IS - 2
M1 - 027603
ER -