Ph.D at QNS – project “Spins on Insulator”
Research-Topic: Atomic scale spin-dependent force measurement
About us: The IBS Center for Quantum Nanoscience (QNS) is a basic research center located in the heart Seoul, South Korea. Our working language is English, 50% of our researchers come from outside of Korea, and 55% of our researchers are women. QNS is laying the foundation for future quantum technologies by exploring the use of quantum behavior atom by atom with highest precision. We focus on the fabrication and exploration of quantum nanostructures while aiming at achieving full control over the quantum states of the constituent atoms and molecules. QNS has become a leading center in the field of quantum-coherent nanoscience by filling our world-class facility with ground-breaking tools and inquisitive minds immersed in a culture of exploration.
About the Project: Spins on thin insulating films can be studied with STM, which requires a tunnel current to flow between tip and sample. Hence, the insulating films have to atomically thin typically between one and four layers thick. However, the key spin properties of energy relaxation time (T1) and quantum coherence time (T2) are strongly reduced through the presence of the metal electrons. We are aiming to work with spin qubits on thick insulating films or on bulk insulators. Hence, we need a new research tool to measure individual spins. The atomic force microscope (AFM) is a cousin of the STM, which measures the force between a tip and the sample. We use a q-plus force sensor with a conducting tip. This allows us simultaneous operation of STM and AFM. In order to measure the magnetic properties of spin-qubits, we rely on the spin-dependent forces between a magnetic tip and the qubits on the insulating surface.
About us: The IBS Center for Quantum Nanoscience (QNS) is a basic research center located in the heart Seoul, South Korea. Our working language is English, 50% of our researchers come from outside of Korea, and 55% of our researchers are women. QNS is laying the foundation for future quantum technologies by exploring the use of quantum behavior atom by atom with highest precision. We focus on the fabrication and exploration of quantum nanostructures while aiming at achieving full control over the quantum states of the constituent atoms and molecules. QNS has become a leading center in the field of quantum-coherent nanoscience by filling our world-class facility with ground-breaking tools and inquisitive minds immersed in a culture of exploration.
About the Project: Spins on thin insulating films can be studied with STM, which requires a tunnel current to flow between tip and sample. Hence, the insulating films have to atomically thin typically between one and four layers thick. However, the key spin properties of energy relaxation time (T1) and quantum coherence time (T2) are strongly reduced through the presence of the metal electrons. We are aiming to work with spin qubits on thick insulating films or on bulk insulators. Hence, we need a new research tool to measure individual spins. The atomic force microscope (AFM) is a cousin of the STM, which measures the force between a tip and the sample. We use a q-plus force sensor with a conducting tip. This allows us simultaneous operation of STM and AFM. In order to measure the magnetic properties of spin-qubits, we rely on the spin-dependent forces between a magnetic tip and the qubits on the insulating surface.
Figure 1. Spin-dependent force detection of magnetic atom on insulator using AFM
Primary scientific tasks will be:
Qualifications:
Employment Detail:
Employment for domestic candidates:
Applications should be sent by email to QNS HR Team (hr@qns.science) including,
in one PDF file:
1) Cover Letter
2) Brief CV
3) Contact information for two references
- Execution of experiments using a low-temperature AFM/STM for spin detection at atomic scale.
- Analyze data, publish results to scientific journals and attend conferences.
- Setup interesting experimental plans and active scientific discussion with team and groups in QNS.
- Instrumentation for upgrade of existing systems or a new equipment to achieve experimental plans.
Qualifications:
- Master's Degree in Physics, Chemistry, or related fields
- Experience on scanning probe microscope preferred
- Enthusiasm to explore science at atomic level
- Fluent English speaking
Employment Detail:
- Contract condition: yearly renewal contract (based on one's performance, it is extendable for multiple years)
- Salary: according to the internal regulations o Please email us if you want more detail.
- Annual leave: according to the Korean Labor law
Employment for domestic candidates:
- Additional requirement for contract: current doctoral candidate at Ewha Womans University (Female only)
- Salary: according to the Ewha's student labor cost regulations o Please email us if you want more detail.
Applications should be sent by email to QNS HR Team (hr@qns.science) including,
in one PDF file:
1) Cover Letter
2) Brief CV
3) Contact information for two references
Contact:
Benefit and salary information available. For more information please contact hr@qns.science
