Abstract: I will discuss the origin of chiral domain-wall (DW) dynamics in epitaxial Pd/Co/Pd(111) films in which the effective interfacial Dzyaloshinskii–Moriya interaction (DMI) is near zero. The Pd(3–10)/Co(0.7)/Pd(3) trilayers samples were grown by MBE on Si(111)/Cu(2). DW velocities were measured under simultaneous out-of-plane driving fields and in-plane symmetry-breaking fields in the creep and depinning regimes. Despite the negligible net DMI, the Hx- dependencies show a pronounced asymmetry: in the creep regime, right-handed DWs can be about three orders of magnitude more mobile than left-handed DWs, and the effect increases with the thickness and roughness of the bottom Pd layer. By fitting the creep law, I will show that this asymmetry originates primarily from the chirality of the depinning field Hd and depinning temperature Td, while the chirality of the velocity prefactor and damping is negligible. I will further present evidence that the effect is controlled by Co thickness and is consistent with z-symmetry breaking by an asymmetric distribution of misfit dislocations in the strained Co layer. These results identify chiral pinning as a distinct mechanism, separate from chiral energy and chiral damping, for controlling DW motion in symmetric epitaxial PMA systems. The applications of chiral pinning all leverage a single, powerful principle: the pinning potential itself becomes a selectivity filter for chirality. This is fundamentally different from chiral damping (which affects velocity) or DMI (which sets equilibrium chirality). Chiral pinning provides a mechanism to trap or release DWs based on their handedness, set a chirality-dependent threshold for motion, enabling logic and neuronal functions, rectify and filter DW flow in nanowire networks.

CV: He was born 19.03.1979 in the Primorskii region. He received the specialist diploma (with honors) in 2000, Ph.D. degree (2003) and Doctor of Science degree (2019) in Physics in Far Eastern Federal University (FEFU). From 2006 to 2009, he was a Research Officer in the NanoScience Group (Prof. Alain Nogaret) of University of Bath (U.K). In 2009, he joined the Norwegian University of Science and Technology (Norway) as a Researcher. In 2010, he joined the Department of Physics of Münster University (Germany) as a Researcher in the Prof. Sergei Demokritov’s group. In 2017, he joined the Center for Spin-Orbitronic Materials in Korea University (South Korea) as a Research Professor in the Prof. Young Keun Kim's group. In 2019, he worked in the Prof. Mathias Klaui’s group in Mainz University (Germany). He served as a Vice-President for Research in Far Eastern Federal University from 2020 till 2023. He was a Rector of Sakhalin State University in the period 2023-2026. He has authored 250 research articles, 19 inventions and 35 invited talks on the international conferences. His current research interests include nanomagnetism, spintronics, spin-orbitronics, sensorics, and artificial intelligence. His awards include the Bronze Medal of the Minister of Education and Science of the Russian

Federation for winning the contest "Young Organizer in Science, Education and High Technologies" (2005), the Gold Medal in the International Competition of Young Scientists in Nanotechnologies (2011), the Best Young Scientist of Russia (2014), the Science Drive Program of Nobel Laureate Andre Geim Award (2015), the Gold Medal of the Seoul International Invention Fair (2016), the Best Research Team of FEFU (2018, 2020), the Scientific Leader of Russia (2020), the Gold Names of the Higher School (2022). He is an Editorial Board Member of Journal Advances in Nano Research, Journal of Superconductivity and Novel Magnetism, Physics of Metals and Metallography. He serves as an expert of the FP7 and Horizon-2020 EU programs, the Russian Academy of Sciences, the Israel Science Foundation, the Russian Science Foundation. He is a member of IEEE, the Russian Magnetic Society, and the Asian Union of Magnetic Societies.

Time: 10:00-12:00 am, Nov. 10, 2026 (Tuesday Morning)，2026年11月10日周二上午10：00至12：00

Hosts: Caihua Wan (wancaihua@iphy.ac.cn) and Xiufeng Han (xfhan@iphy.ac.cn) and Guoqiang Yu (guoqiangyu@iphy.ac.cn)