TY - JOUR
T1 - Exchange-coupling-induced symmetry breaking in topological insulators
AU - Wei, Peng
AU - Katmis, Ferhat
AU - Assaf, Badih A.
AU - Steinberg, Hadar
AU - Jarillo-Herrero, Pablo
AU - Heiman, Donald
AU - Moodera, Jagadeesh S.
PY - 2013/4/30
Y1 - 2013/4/30
N2 - An exchange gap in the Dirac surface states of a topological insulator (TI) is necessary for observing the predicted unique features such as the topological magnetoelectric effect as well as to confine Majorana fermions. We experimentally demonstrate proximity-induced ferromagnetism in a TI, combining a ferromagnetic insulator EuS layer with Bi2Se3, without introducing defects. By magnetic and magnetotransport studies, including anomalous Hall effect and magnetoresistance measurements, we show the emergence of a ferromagnetic phase in TI, a step forward in unveiling their exotic properties.
AB - An exchange gap in the Dirac surface states of a topological insulator (TI) is necessary for observing the predicted unique features such as the topological magnetoelectric effect as well as to confine Majorana fermions. We experimentally demonstrate proximity-induced ferromagnetism in a TI, combining a ferromagnetic insulator EuS layer with Bi2Se3, without introducing defects. By magnetic and magnetotransport studies, including anomalous Hall effect and magnetoresistance measurements, we show the emergence of a ferromagnetic phase in TI, a step forward in unveiling their exotic properties.
UR - http://www.scopus.com/inward/record.url?scp=84877774832&partnerID=8YFLogxK
U2 - 10.1103/PhysRevLett.110.186807
DO - 10.1103/PhysRevLett.110.186807
M3 - مقالة
SN - 0031-9007
VL - 110
JO - Physical Review Letters
JF - Physical Review Letters
IS - 18
M1 - 186807
ER -