The 92nd IUVSTA workshop on

Advanced Spectroscopy and Transport for 2D Materials at Surfaces


The 4th Asia-Pacific Symposium on Solid Surfaces (APSSS-4)

13 – 17 September 2020

12 – 16 September 2021

Okinawa Institute of Science and Technology Graduate University (OIST)

Organized by

The Japan Society of Vacuum and Surface Science (JVSS)

Sponsored by

The International Union for Vacuum Science, Technique and Applications (for IUVSTA Workshop)
Japan Society for The Promotion of Science (for APSSS-4)
Okinawa Institute of Science and Technology (OIST)

Conference venue

Okinawa Institute of Science and Technology Graduate University (OIST)
1919-1 Tancha, Onna-son, Kunigami-gun, Okinawa 904-0495, Japan


The topics discussed in the workshop include the following highly advanced subjects of surface physics/science and nanoscale science;

Atomic layer superconductivity

Research on the ultimately thin two-dimensional (2D) superconductor was first demonstrated on single-layer 2D superconductivity by using scanning tunneling microscopy (STM). Then the supercurrent was detected by the transport measurements. Recent, superconductivity in the Rashba-split surface states has opened up the possibility of unconventional superconductivity arising from the broken centrosymmetry. Recent cutting-edge achievements and prospects on the ideal 2D superconductivity will be discussed.

Topological materials

Motivated by the first demonstration of quantum anomalous Hall effect, ferromagnetic/topologocal insulator (TI) hybrid systems are one of the hot subjects in this category. The subjects, such as Majorana bound states based on TI, Wyle semimetals, topological crystalline insulator, and antiferromagnetic topological insulator, will also be agenda. Further understandings in their physics and collaborations will be sought through the discussion.

2D Xene materials

After the successful fabrication of graphene, various elemental monolayer series; Xenes, such as silicene, germanene, borophene, stanene etc. have been successfully fabricated and its unique structural, electronic, and topological properties have been discussed. Twisted bilayer graphene is another attractive subject in this workshop as it exhibits superconductivity and quasicrystalline electronic states depending on the rotational angle.

One-dimensional metallic states

One-dimensional (1D) metallic states realized on surfaces is a rich source of the relevant physics, and the exploration through the discovery of metal-insulator transition of 1D In atomic chains at low temperature was initiated. Whether the 1D states are described with Tomonaga-Lattinger liquid (TLL) has been discussed. Edge states at steps and domain boundaries of 2D TI such as Bi and transition-metal dichalcogenide and their TLL properties are a subject of extensive discussion in this workshop.

Abstract submission

Abstract submission page will open soon

Invited speakers





Committee members

Conference chairs: Shuji Hasegawa and Fumio Komori (The University of Tokyo)

Yukio Hasegawa (The University of Tokyo)
Ying Jiang (Peking University)
Canhua Liu (Shanghai Jiao Tong University)
Yoshinori Okada (Okinawa Institute of Science and Technology Graduate University)
Alexander A. Saranin (Far Eastern Branch of Russian Academy of Science)
Ching-Ming Wei (Academia Sinica)
Han Woong Yeom (Pohang University of Science and Technology)