Abstract
The spin-orbit interaction in condensed matter [1] is a key ingredient of contemporary approaches to spintronics [2,3]. These approaches have primarily focused on the 'interior' bulk electronic states of semiconductors and metals with parabolic energy-momentum dispersion. Early theoretical work however showed that in narrow band gap semiconductor heterostructures (derived from (Pb, Sn)Te and (Hg, Cd)Te), the spin-orbit interaction can lead to helical two dimensional (2D) interface states with a massless (linear) Dirac dispersion [4]. Over the past 5 years or so, we have witnessed a rebirth of these concepts in the more contemporary context of 'topological insulators,' driven by the recognition of deep and fundamental connections between surface or edge states and topological invariants [5,6]. In their 2D realization, topological insulators exhibit spin-polarized one-dimensional (1D) edge states [7], while the three-dimensional (3D) versions are characterized by 2D surface states with a spin-textured Dirac cone dispersion [8]. The inherent spin-texture of these electronic states provides a natural route toward 'topological spintronics' by generating an efficient spin-transfer torque [9,10].
| Original language | English (US) |
|---|---|
| Title of host publication | 2015 IEEE International Magnetics Conference, INTERMAG 2015 |
| Publisher | Institute of Electrical and Electronics Engineers Inc. |
| ISBN (Electronic) | 9781479973224 |
| DOIs | |
| State | Published - Jul 14 2015 |
| Event | 2015 IEEE International Magnetics Conference, INTERMAG 2015 - Beijing, China Duration: May 11 2015 → May 15 2015 |
Publication series
| Name | 2015 IEEE International Magnetics Conference, INTERMAG 2015 |
|---|
Other
| Other | 2015 IEEE International Magnetics Conference, INTERMAG 2015 |
|---|---|
| Country | China |
| City | Beijing |
| Period | 5/11/15 → 5/15/15 |
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All Science Journal Classification (ASJC) codes
- Surfaces, Coatings and Films
- Electronic, Optical and Magnetic Materials
- Electrical and Electronic Engineering
Cite this
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Topological insulators : Theory & concepts. / Samarth, N.
2015 IEEE International Magnetics Conference, INTERMAG 2015. Institute of Electrical and Electronics Engineers Inc., 2015. 7157806 (2015 IEEE International Magnetics Conference, INTERMAG 2015).Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
TY - GEN
T1 - Topological insulators
T2 - Theory & concepts
AU - Samarth, N.
PY - 2015/7/14
Y1 - 2015/7/14
N2 - The spin-orbit interaction in condensed matter [1] is a key ingredient of contemporary approaches to spintronics [2,3]. These approaches have primarily focused on the 'interior' bulk electronic states of semiconductors and metals with parabolic energy-momentum dispersion. Early theoretical work however showed that in narrow band gap semiconductor heterostructures (derived from (Pb, Sn)Te and (Hg, Cd)Te), the spin-orbit interaction can lead to helical two dimensional (2D) interface states with a massless (linear) Dirac dispersion [4]. Over the past 5 years or so, we have witnessed a rebirth of these concepts in the more contemporary context of 'topological insulators,' driven by the recognition of deep and fundamental connections between surface or edge states and topological invariants [5,6]. In their 2D realization, topological insulators exhibit spin-polarized one-dimensional (1D) edge states [7], while the three-dimensional (3D) versions are characterized by 2D surface states with a spin-textured Dirac cone dispersion [8]. The inherent spin-texture of these electronic states provides a natural route toward 'topological spintronics' by generating an efficient spin-transfer torque [9,10].
AB - The spin-orbit interaction in condensed matter [1] is a key ingredient of contemporary approaches to spintronics [2,3]. These approaches have primarily focused on the 'interior' bulk electronic states of semiconductors and metals with parabolic energy-momentum dispersion. Early theoretical work however showed that in narrow band gap semiconductor heterostructures (derived from (Pb, Sn)Te and (Hg, Cd)Te), the spin-orbit interaction can lead to helical two dimensional (2D) interface states with a massless (linear) Dirac dispersion [4]. Over the past 5 years or so, we have witnessed a rebirth of these concepts in the more contemporary context of 'topological insulators,' driven by the recognition of deep and fundamental connections between surface or edge states and topological invariants [5,6]. In their 2D realization, topological insulators exhibit spin-polarized one-dimensional (1D) edge states [7], while the three-dimensional (3D) versions are characterized by 2D surface states with a spin-textured Dirac cone dispersion [8]. The inherent spin-texture of these electronic states provides a natural route toward 'topological spintronics' by generating an efficient spin-transfer torque [9,10].
UR - http://www.scopus.com/inward/record.url?scp=84942474249&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84942474249&partnerID=8YFLogxK
U2 - 10.1109/INTMAG.2015.7157806
DO - 10.1109/INTMAG.2015.7157806
M3 - Conference contribution
AN - SCOPUS:84942474249
T3 - 2015 IEEE International Magnetics Conference, INTERMAG 2015
BT - 2015 IEEE International Magnetics Conference, INTERMAG 2015
PB - Institute of Electrical and Electronics Engineers Inc.
ER -