Electrical and thermal spin accumulation in germanium

Applied Physics Letters

Volumn 101, Issue 2, 2012, Pages

  Jain, A ^a   Vergnaud, C ^a   Peiro, J ^b   Le Breton, J C ^b   Prestat, E ^a   Louahadj, L ^a   Portemont, C ^c   Ducruet, C ^c   Baltz, V ^d   Marty, A ^a   Barski, A ^a   Bayle Guillemaud, P ^a   Vila, L ^a   Attane J P ^a   Augendre, E ^e   Jaffres H ^b   George, J M ^b   Jamet, M ^a  

^a UNIV GRENOBLE ALPES   (France)

^b CNRS   (France)

^c CROCUS Technology   (France)

^d CEA GRENOBLE   (France)

^e CEA LETI   (France)

Author keywords

[No Author keywords available]

Indexed keywords

CHARGE CURRENT; ELECTRICAL SPIN INJECTION; FERROMAGNETS; GATE VOLTAGES; MICROSCOPIC EFFECTS; ROOM TEMPERATURE; SIGNAL MODULATIONS; SPIN DIFFUSIONS; SPIN SIGNAL; SPIN-ACCUMULATIONS;

THERMAL GRADIENTS;

GERMANIUM;

EID: 84863916250     PISSN: 00036951     EISSN: None     Source Type: Journal    
DOI: 10.1063/1.4733620     Document Type: Article

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23. The non-vanishing thermal spin signal at zero-current is an artefact of our experimental set-up. Indeed, the sample is inserted in the variable temperature insert of the cryostat and is permanently heated to keep it at room temperature. We then believe that a weak temperature difference exists between Ge and CoFeB due to this regulation that yields the non-vanishing spin signal at zero-current.