NDLI: Massive Dirac Fermion Observed in Lanthanide-Doped Topological Insulator Thin Films

Content Provider	PubMed Central
Author	Harrison, S. E. Collins-mcintyre, L. J. Schönherr, P. Vailionis, A. Srot, V. Aken, P. A. Van Kellock, A. J. Pushp, A. Parkin, S. S. P. Harris, J. S. Zhou, B. Chen, Y. L. Hesjedal, T.
Copyright Year	2015
Abstract	The breaking of time reversal symmetry (TRS) in three-dimensional (3D) topological insulators (TIs), and thus the opening of a ‘Dirac-mass gap’ in the linearly dispersed Dirac surface state, is a prerequisite for unlocking exotic physical states. Introducing ferromagnetic long-range order by transition metal doping has been shown to break TRS. Here, we present the study of lanthanide (Ln) doped Bi2Te3, where the magnetic doping with high-moment lanthanides promises large energy gaps. Using molecular beam epitaxy, single-crystalline, rhombohedral thin films with Ln concentrations of up to ~35%, substituting on Bi sites, were achieved for Dy, Gd, and Ho doping. Angle-resolved photoemission spectroscopy shows the characteristic Dirac cone for Gd and Ho doping. In contrast, for Dy doping above a critical doping concentration, a gap opening is observed via the decreased spectral intensity at the Dirac point, indicating a topological quantum phase transition persisting up to room-temperature.
Related Links	http://dx.doi.org/10.1038/srep15767
Starting Page	15767
File Format	PDF
ISSN	20452322
e-ISSN	20452322
Journal	Scientific Reports
Volume Number	5
Language	English
Publisher	Nature Publishing Group
Publisher Date	2015-10-01
Access Restriction	Open
Rights Holder	Nature Publishing Group
Subject Keyword	Science and technology Research in Higher Education
Content Type	Text
Resource Type	Article
Subject	Multidisciplinary

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

Massive Dirac Fermion Observed in Lanthanide-Doped Topological Insulator Thin Films

Massive Dirac fermion on the surface of a magnetically doped topological insulator.

Oxidation Effects in Rare Earth Doped Topological Insulator Thin Films

Dual evidence of surface Dirac states in thin cylindrical topological insulator Bi2Te3 nanowires

Massive and massless Dirac fermions in Pb1−xSnxTe topological crystalline insulator probed by magneto-optical absorption

Electric control of topological phase transitions in Dirac semimetal thin films

Tunable Dirac Fermion Dynamics in Topological Insulators

Edge states and integer quantum Hall effect in topological insulator thin films

Thickness-dependent transport channels in topological insulator Bi2Se3 thin films grown by magnetron sputtering

Massive Dirac Fermion Observed in Lanthanide-Doped Topological Insulator Thin Films

Similar Documents

Massive Dirac Fermion Observed in Lanthanide-Doped Topological Insulator Thin Films

Massive Dirac fermion on the surface of a magnetically doped topological insulator.

Oxidation Effects in Rare Earth Doped Topological Insulator Thin Films

Dual evidence of surface Dirac states in thin cylindrical topological insulator Bi2Te3 nanowires

Massive and massless Dirac fermions in Pb1−xSnxTe topological crystalline insulator probed by magneto-optical absorption

Electric control of topological phase transitions in Dirac semimetal thin films

Tunable Dirac Fermion Dynamics in Topological Insulators

Edge states and integer quantum Hall effect in topological insulator thin films

Thickness-dependent transport channels in topological insulator Bi2Se3 thin films grown by magnetron sputtering

Massive Dirac Fermion Observed in Lanthanide-Doped Topological Insulator Thin Films