Pauli blockade in a few-hole PMOS double quantum dot limited by spin-orbit interaction

Heorhii Bohuslavskyi (1, 2) , Dharmraj Kotekar-Patil (2) , Romain Maurand (2) , Andrea Corna (2) , Sylvain Barraud (3) , Leo Bourdet (4) , Louis Hutin (1) , Yann Michel Niquet (4) , Xavier Jehl (2) , Silvano de Franceschi (2) , Maud Vinet (1) , M. Sanquer (2)

1 CEA-LETI - Commissariat à l'énergie atomique et aux énergies alternatives - Laboratoire d'Electronique et de Technologie de l'Information
2 LaTEQS - Laboratoire de Transport Electronique Quantique et Supraconductivité
3 DCOS - Département Composants Silicium
4 LSIM - Laboratory of Atomistic Simulation

We report on the hole compact double quantum dots fabricated using a conventional CMOS technology. We provide the evidence of Pauli spin blockade in the few hole regime that is relevant to spin qubit implementations. A current dip is observed around zero magnetic field, in agreement with the expected behavior for the case of strong spin-orbit. We deduce an intradot spin relaxation rate approximate to 120 kHz for the first holes, an important step towards a robust hole spin-orbit qubit. Published by AIP Publishing.

Mots clés: Current voltage characteristics; Nanocrystals; Quantum computers; CMOS technology; Double quantum dots; Spin blockade; Spin orbit interactions; Spin orbits; Spin qubit; Spin-relaxation rates; Zero magnetic fields; Semiconductor quantum dots

Domaines: Physique [physics]

Heorhii Bohuslavskyi, Dharmraj Kotekar-Patil, Romain Maurand, Andrea Corna, Sylvain Barraud, et al.. Pauli blockade in a few-hole PMOS double quantum dot limited by spin-orbit interaction. Applied Physics Letters, 2016, 109 (19), pp.193101. ⟨10.1063/1.4966946⟩. ⟨cea-01849344⟩