20221118 Kondo cloud condensation in a highly-doped semiconductor metal
“Kondo cloud condensation in a highly-doped semiconductor metal” Dr. Hyunsik Im Department of Physics and Semiconductor Science, Dongguk University Nov. 18 (Fri.), 02:30 PM E6-2. 1st fl. #1323 https://kaist.zoom.us/j/89378880769 회의 ID: 893 7888 0769 암호: 909660 Abstract: When a magnetic moment is embedded in a metal, it captures itinerant electrons to form the Kondo cloud with a size of a few micrometres. For a metal with dense magnetic impurities such…
20220930 Spin-orbit torque-based spintronic devices
“Spin-orbit torque-based spintronic devices” Dr. Byong-Guk Park Materials Science and Engineering, KAIST Sep. 30 (Fri.), 04:00 PM E6-2. 1st fl. #1323 https://kaist.zoom.us/j/83179561572 회의 ID: 831 7956 1572 암호: 216531 Abstract: Spin-orbit torque (SOT) arising from spin-orbit coupling has gained much attention because it promises efficient magnetization switching in spintronic devices [1]. However, the switching is not purely electrical in laterally homogeneous structures. An extra in-plane magnetic field is required to…
20220930 Putting a spin on the Josephson effect
“Putting a spin on the Josephson effect” Dr. Sunghun Park Center for Theoretical Physics of Complex Systems, IBS-PCS Sep. 30 (Fri.), 02:30 PM E6-2. 1st fl. #1323 https://kaist.zoom.us/j/83179561572 회의 ID: 831 7956 1572 암호: 216531 Abstract: Finding qubit with long coherence times and high controllability is a long-standing goal in quantum information science and condensed matter physics. Spin degree of freedom confined by a superconducting gap has been considered as…
20220610 Fe5GeTe2의 나선형 자성특성과 자기저항의 전류밀도 의존성 연구
“Fe5GeTe2의 나선형 자성특성과 자기저항의 전류밀도 의존성 연구” Dr. Sanghoon Kim Department of Physics, University of Ulsan Jun. 10 (Fri.), 04:00 PM E6-2. 1st fl. #1323 Abstract: Fe¬5GeTe2(이하 F5GT)은 2차원 자성체 중에 가장 높은 큐리온도(~320 K)를 가지고 있는 물질 중 하나로, 최근 연구가 많이 되고 있다. 본 발표에서는 크게 두가지 주제에 대해서 다룰 예정이다. 첫번째는 F5GT의 온도에 따른 자성특성, 두번째는 저온에서 발현되는 수송현상 관련 연구결과이다. 첫번째 주제의 경우, 이 연구를 통해…
20220610 Combinatorial strategy for condensed matter physics: study on rare earth hexaborides thin films
“Combinatorial strategy for condensed matter physics: study on rare earth hexaborides thin films” Dr. Seunghun Lee Department of Physics, Pukyong National University Jun. 10 (Fri.), 02:30 PM E6-2. 1st fl. #1323 Abstract: In condensed matter physics, we all are interested in the physical properties of materials and seek to understand physics therein. We traverse a series of individual samples with a systematic variation of interest (e.g., composition, defect concentration, or…
20220610 Record-quality two-dimensional electron systems
“Record-quality two-dimensional electron systems” Dr. Yoon Jang Chung Laboratory for Physical Sciences, University of Maryland Jun. 10 (Fri.), 11:00 AM https://kaist.zoom.us/j/89579984915 회의 ID: 895 7998 4915 암호: 254783 Abstract: Clean two-dimensional electron systems (2DESs) provide a near-scatter-free environment for electrons, making them useful for studying many branches of physics. This is particularly true for the investigation of delicate, interaction-driven quantum phenomena. Indeed, several many-body phases, such as Wigner solids, odd-…
20220513 High-fidelity iToffoli gate for fixed-frequency superconducting qubits
“High-fidelity iToffoli gate for fixed-frequency superconducting qubits” Dr. Yosep Kim Center for Quantum Information, KIST May. 13 (Fri.), 04:00 PM E6-2. 1st fl. #1323 Abstract: The development of noisy intermediate-scale quantum (NISQ) devices has extended the scope of executable quantum circuits with high-fidelity single- and two-qubit gates. Equipping NISQ devices with three-qubit gates will enable the realization of more complex quantum algorithms and efficient quantum error correction protocols with reduced…
20220513 Topological Superconducting Spintronics Towards Zero-Power Computing Technologies
“Topological Superconducting Spintronics Towards Zero-Power Computing Technologies” Dr. Kun-Rok Jeon Department of Physics, Chung-Ang University May. 13 (Fri.), 02:30 PM https://kaist.zoom.us/j/88323922428 회의 ID: 883 2392 2428 암호: 839974 Abstract: Semiconductor (SC) spintronics [1-4] aims to integrate memory and logic functions into a single device. Ferromagnetic tunnel contacts have emerged as a robust and technically viable method to inject spin current into a SC up to room temperature, and to detect…
20220401 High-field Electron Transport and Interaction Induced Phenomena in 2D Materials
“High-field Electron Transport and Interaction Induced Phenomena in 2D Materials” Dr. Kayoung Lee Electrical Engineering, KAIST Apr. 1 (Fri.), 04:00 PM https://kaist.zoom.us/j/89879980781 회의 ID: 898 7998 0781 암호: 808795 Abstract: In this talk, I will present our research that spans from fundamental electron transport mechanisms to interaction induced phenomena in low-dimensional electron systems, each of which is in dire need of innovation to incubate new material-based devices with high performance.…
20211203 Nonequilibrium Heat Transport in Elemental Metals Probed by an Ultrathin Magnetic Thermometer
“Nonequilibrium Heat Transport in Elemental Metals Probed by an Ultrathin Magnetic Thermometer” Dr. Hyejin Jang Department of Materials Science and Engineering, Seoul National University Dec. 3 (Fri.), 04:00 PM https://kaist.zoom.us/j/85193398774 회의 ID: 851 9339 8774 암호: 867451 Abstract: The interaction between electrons and phonons is responsible for a variety of physical properties of solids, such as electrical conductivity, superconductivity, polaron conduction, and piezoelectricity. In particular, in metals, electrons and phonons…