Electrical and optical spin injection in ferromagnet/semiconductor heterostructures

T Taniyama, E Wada, M Itoh, M Yamaguchi - NPG Asia Materials, 2011 - nature.com
Spin-based electronics or 'spintronics' is a rapidly expanding research area that offers the
promise of surpassing the limits of conventional electrical charge-based semiconductor …

Ohmic contacts to n-type germanium with low specific contact resistivity

K Gallacher, P Velha, DJ Paul, I MacLaren… - Applied Physics …, 2012 - pubs.aip.org
A low temperature nickel process has been developed that produces Ohmic contacts to n-
type germanium with specific contact resistivities down to (2.3±1.8)× 10− 7 Ω-cm 2 for …

Optical spin injection and spin lifetime in Ge heterostructures

F Pezzoli, F Bottegoni, D Trivedi, F Ciccacci… - Physical Review Letters, 2012 - APS
We demonstrate optical orientation in Ge/SiGe quantum wells and study their spin
properties. The ultrafast electron transfer from the center of the Brillouin zone to its edge …

Experimental Demonstration of Room-Temperature Spin Transport in -Type Germanium Epilayers

S Dushenko, M Koike, Y Ando, T Shinjo, M Myronov… - Physical review …, 2015 - APS
We report an experimental demonstration of room-temperature spin transport in n-type Ge
epilayers grown on a Si (001) substrate. By utilizing spin pumping under ferromagnetic …

Electrical spin injection and accumulation in CoFe/MgO/Ge contacts at room temperature

KR Jeon, BC Min, YH Jo, HS Lee, IJ Shin, CY Park… - Physical Review B …, 2011 - APS
We report the all-electrical spin injection and detection in CoFe/MgO/moderately doped n-
Ge contact at room temperature (RT), employing three-terminal Hanle measurements. A …

Intrinsic spin lifetime of conduction electrons in germanium

P Li, Y Song, H Dery - Physical Review B—Condensed Matter and Materials …, 2012 - APS
We investigate the intrinsic spin relaxation of conduction electrons in germanium due to
electron-phonon scattering. We derive intravalley and intervalley spin-flip matrix elements …

Electron spin coherence of shallow donors in natural and isotopically enriched germanium

AJ Sigillito, RM Jock, AM Tyryshkin, JW Beeman… - Physical review …, 2015 - APS
Germanium is a widely used material for electronic and optoelectronic devices and recently
it has become an important material for spintronics and quantum computing applications …

Electrical creation of spin accumulation in p-type germanium

H Saito, S Watanabe, Y Mineno, S Sharma… - Solid State …, 2011 - Elsevier
We report the electrical creation of a spin accumulation in p-type Ge using an epitaxial
Fe/MgO contact. The induced spin polarization was successfully detected by the Hanle effect …

Spin accumulation created electrically in an n-type germanium channel using Schottky tunnel contacts

K Kasahara, Y Baba, K Yamane, Y Ando… - Journal of Applied …, 2012 - pubs.aip.org
Using high-quality Fe 3 Si/n+-Ge Schottky-tunnel-barrier contacts, we study spin
accumulation in an n-type germanium (n-Ge) channel. In the three-or two-terminal voltage …

Strained germanium for applications in spintronics

C Morrison, M Myronov - physica status solidi (a), 2016 - Wiley Online Library
Germanium (Ge) is another group‐IV semiconductor material, which recently started
attracting tremendous attention in spintronics following success of silicon (Si). The crystal …