Towards Coherent Spin Precession in Pure-spin Current

Overview

Journal Sci Rep

Specialty Science

Date 2012 Sep 7

PMID 22953049

Citations 1

Authors

Hiroshi Idzuchi

Yasuhiro Fukuma

Yoshichika Otani

Affiliations

Soon will be listed here.

Abstract

Non-local spin injection in lateral spin valves generates a pure spin current which is a diffusive flow of spins (i.e. spin angular momentums) with no net charge flow. The diffusive spins lose phase coherency in precession while undergoing frequent collisions and these events lead to a broad distribution of the dwell time in a transport channel between the injector and the detector. Here we show the lateral spin-valves with dual injectors enable us to detect a genuine in-plane precession signal from the Hanle effect, demonstrating the phase coherency in the in-plane precession is improved with an increase of the channel length. The coherency in the spin precession shows a universal behavior as a function of the normalized separation between the injector and the detector in material-independent fashion for metals and semiconductors including graphene.

Citing Articles

Enhanced tunnel spin injection into graphene using chemical vapor deposited hexagonal boron nitride.

Kamalakar M, Dankert A, Bergsten J, Ive T, Dash S Sci Rep. 2014; 4:6146.

PMID: 25156685 PMC: 4143790. DOI: 10.1038/srep06146.

References

Jedema F, Heersche H, Filip A, Baselmans J, van Wees B . Electrical detection of spin precession in a metallic mesoscopic spin valve. Nature. 2002; 416(6882):713-6. DOI: 10.1038/416713a. View

Huang B, Monsma D, Appelbaum I . Coherent spin transport through a 350 micron thick silicon wafer. Phys Rev Lett. 2007; 99(17):177209. DOI: 10.1103/PhysRevLett.99.177209. View

Han W, Pi K, McCreary K, Li Y, Wong J, Swartz A . Tunneling spin injection into single layer graphene. Phys Rev Lett. 2011; 105(16):167202. DOI: 10.1103/PhysRevLett.105.167202. View

Valenzuela S, Tinkham M . Direct electronic measurement of the spin Hall effect. Nature. 2006; 442(7099):176-9. DOI: 10.1038/nature04937. View

Tombros N, Jozsa C, Popinciuc M, Jonkman H, Wees B . Electronic spin transport and spin precession in single graphene layers at room temperature. Nature. 2007; 448(7153):571-4. DOI: 10.1038/nature06037. View

Jedema F, Filip A, van Wees B . Electrical spin injection and accumulation at room temperature in an all-metal mesoscopic spin valve. Nature. 2001; 410(6826):345-8. DOI: 10.1038/35066533. View

Johnson , Silsbee . Coupling of electronic charge and spin at a ferromagnetic-paramagnetic metal interface. Phys Rev B Condens Matter. 1988; 37(10):5312-5325. DOI: 10.1103/physrevb.37.5312. View

Jozsa C, Popinciuc M, Tombros N, Jonkman H, van Wees B . Electronic spin drift in graphene field-effect transistors. Phys Rev Lett. 2008; 100(23):236603. DOI: 10.1103/PhysRevLett.100.236603. View

Johnson , Silsbee . Interfacial charge-spin coupling: Injection and detection of spin magnetization in metals. Phys Rev Lett. 1985; 55(17):1790-1793. DOI: 10.1103/PhysRevLett.55.1790. View

10.

van Son PC , van Kempen H , Wyder . Boundary resistance of the ferromagnetic-nonferromagnetic metal interface. Phys Rev Lett. 1987; 58(21):2271-2273. DOI: 10.1103/PhysRevLett.58.2271. View

11.

Chappert C, Fert A, Van Dau F . The emergence of spin electronics in data storage. Nat Mater. 2007; 6(11):813-23. DOI: 10.1038/nmat2024. View

12.

Johnson , Silsbee . Thermodynamic analysis of interfacial transport and of the thermomagnetoelectric system. Phys Rev B Condens Matter. 1987; 35(10):4959-4972. DOI: 10.1103/physrevb.35.4959. View

13.

Fukuma Y, Wang L, Idzuchi H, Takahashi S, Maekawa S, Otani Y . Giant enhancement of spin accumulation and long-distance spin precession in metallic lateral spin valves. Nat Mater. 2011; 10(7):527-31. DOI: 10.1038/nmat3046. View