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<div style="text-align:center; font-size:180%; line-height:1.35em;">Topological Quantum Matter Engineering Lab</div>


We explore unknown scientific territories in thin film systems using a state-of-the-art Molecular Beam Epitaxy (MBE) technique in combination with various characterization probes. Our custom-designed MBE system has a number of unique capabilities that facilitate atomic-scale engineering of a variety of novel material systems. Utilizing these unique capabilities, we are actively investigating topological insulators, complex oxides and their heterostructures. Such heterostructures could yield new physics and devices that are intriguing both intellectually and technologically. We have been one of the main leaders in thin film topological insulators over the past several years. 
[[File:GroupPhoto5.jpg|frame|center]]
 
Welcome to Topological Quantum Matter Engineering Lab!!
 
We are scientific explorers looking for previously-unknown territories in the vast ocean of quantum and topological materials. Our flagship is a uniquely-built hybrid molecular beam epitaxy system capable of creating various artificial materials with atomic precision, supported by a variety of other advanced tools and collaboration teams. With these unique capabilities, we explore a range of hybrid thin film quantum materials including topological insulators, topological superconductors, Weyl/Dirac semimetals, materials for superconducting and topological quantum computation, 2D materials, and correlated oxides, searching for new physics and materials for quantum and topological applications.  
 
If you would like to share the excitement of discoveries while exploring the unknown phase space of quantum and topological materials, you are welcome to join the Topological Quantum Matter Engineering Lab!!


== News ==
== News ==
(Dec. 2015) One of our works on spin detection of topological insulators is featured in Nature Physics as a Research Highlight: http://www.nature.com/nphys/journal/v11/n12/full/nphys3602.html
Prof. Seongshik Oh is elected as a 2025 Fellow of American Physical Society (APS) through the Topical Group on Quantum Materials Synthesis (GQMS), "For advances in the MBE growth of chalcogenide thin films and defect engineering in 2D materials."
 
Prof. Seongshik Oh's postdoc supervisor, Prof. John M. Martinis, won Nobel Prize in Physics 2025!!
 
Prof. Seongshik Oh is elected as the Chair-Elect (till Dec. 2026) for Topical Group on Quantum Materials Synthesis (GQMS) in APS.


(Nov. 2015) Nikesh, Matt, and Maryam's record surface state mobility and quantum Hall effect study appeared in Nano Letters: http://dx.doi.org/10.1021/acs.nanolett.5b03770
Prof. Seongshik Oh, named (2022-2024) Top Scholars in the area of Topological Insulator by ScholarGPS: https://scholargps.com/top-scholars?year=2024&ranking_duration=LIFETIME&specialty=Topological+insulator&p=3&e_ref=dff89961d7e1fa7c41a7#48


(Sep. 2015) Maryam's invited paper on capping effect appeared in APL Materials: http://dx.doi.org/10.1063/1.4931767
Interview of Prof. Seongshik Oh with "ScienceNews" magazine cited in https://www.sciencenews.org/article/dark-matter-axions-quasiparticles, regarding the recent discovery of an axion-like quasiparticle related to dark matter, in a thin topological quantum material.


(July 2015) Matt's invited paper on transport properties appeared in the special issue of Solid State Communications: http://dx.doi.org/10.1016/j.ssc.2014.10.021
KSEA NJ&NY Youtube interview with Prof. Seongshik Oh, regarding quantum materials and other areas of physics (in Korean): https://youtu.be/phlaKj40Y3o


(Oct. 2014) Details on Prof. Oh's ''Moore Materials Synthesis Investigators Award'' have appeared on the Foundation's website:
Interview with Prof. Seongshik Oh in the KSEA NJ & NY YouTube channel (In Korean): https://www.youtube.com/watch?v=SoMHR8AVXC4&t=16s&ab_channel=KSEANJ%26NY
http://www.moore.org/grants/list/GBMF4418?cat=01ddf360-a10f-68a5-8452-ff00002785c8 and http://www.moore.org/programs/science/emergent-phenomena-in-quantum-systems/investigators/


(Aug. 2014) Matt's work (http://dx.doi.org/10.1103/PhysRevLett.113.026801) is featured as the ''Editors' Choice'' in Science Magazine: http://www.sciencemag.org/content/345/6200/twil.full#compilation-1-3-article-title-1
Three of our recent materials breakthroughs are featured in Army Research Office's 2022 Review, under the title of "[[Media:ARO2022.pdf|High-Temperature and Tunable Quantum Magnetic Materials]]" [https://arl.devcom.army.mil/wp-content/uploads/sites/3/2023/06/ARO-YEAR-IN-REVIEW-2022-WEB-FINAL.pdf] .


(Aug. 2014) Prof. Oh selected as one of the twelve ''Moore Materials Synthesis Investigators'' nationwide:
Our recent work on topological phase transitions probed by higher harmonics is featured in the News and Views article in Nature Photonics: https://www.nature.com/articles/s41566-022-01063-2
http://www.moore.org/programs/science/emergent-phenomena-in-quantum-systems/materialssynthesisinvestigators
And also here: https://www6.slac.stanford.edu/news/2022-08-18-exploring-quantum-electron-highways-laser-light.aspx

Latest revision as of 19:35, 10 October 2025

Topological Quantum Matter Engineering Lab
GroupPhoto5.jpg

Welcome to Topological Quantum Matter Engineering Lab!!

We are scientific explorers looking for previously-unknown territories in the vast ocean of quantum and topological materials. Our flagship is a uniquely-built hybrid molecular beam epitaxy system capable of creating various artificial materials with atomic precision, supported by a variety of other advanced tools and collaboration teams. With these unique capabilities, we explore a range of hybrid thin film quantum materials including topological insulators, topological superconductors, Weyl/Dirac semimetals, materials for superconducting and topological quantum computation, 2D materials, and correlated oxides, searching for new physics and materials for quantum and topological applications.

If you would like to share the excitement of discoveries while exploring the unknown phase space of quantum and topological materials, you are welcome to join the Topological Quantum Matter Engineering Lab!!

News

Prof. Seongshik Oh is elected as a 2025 Fellow of American Physical Society (APS) through the Topical Group on Quantum Materials Synthesis (GQMS), "For advances in the MBE growth of chalcogenide thin films and defect engineering in 2D materials."

Prof. Seongshik Oh's postdoc supervisor, Prof. John M. Martinis, won Nobel Prize in Physics 2025!!

Prof. Seongshik Oh is elected as the Chair-Elect (till Dec. 2026) for Topical Group on Quantum Materials Synthesis (GQMS) in APS.

Prof. Seongshik Oh, named (2022-2024) Top Scholars in the area of Topological Insulator by ScholarGPS: https://scholargps.com/top-scholars?year=2024&ranking_duration=LIFETIME&specialty=Topological+insulator&p=3&e_ref=dff89961d7e1fa7c41a7#48

Interview of Prof. Seongshik Oh with "ScienceNews" magazine cited in https://www.sciencenews.org/article/dark-matter-axions-quasiparticles, regarding the recent discovery of an axion-like quasiparticle related to dark matter, in a thin topological quantum material.

KSEA NJ&NY Youtube interview with Prof. Seongshik Oh, regarding quantum materials and other areas of physics (in Korean): https://youtu.be/phlaKj40Y3o

Interview with Prof. Seongshik Oh in the KSEA NJ & NY YouTube channel (In Korean): https://www.youtube.com/watch?v=SoMHR8AVXC4&t=16s&ab_channel=KSEANJ%26NY

Three of our recent materials breakthroughs are featured in Army Research Office's 2022 Review, under the title of "High-Temperature and Tunable Quantum Magnetic Materials" [1] .

Our recent work on topological phase transitions probed by higher harmonics is featured in the News and Views article in Nature Photonics: https://www.nature.com/articles/s41566-022-01063-2 And also here: https://www6.slac.stanford.edu/news/2022-08-18-exploring-quantum-electron-highways-laser-light.aspx

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