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Although optical probes couple to OAM directly, comparable low\u2010energy electrodynamic methods are still in the early stages of development. To exploit the potential of OAM for information science and technology, angular momentum\u2010resolved transport methods must be established. Here, a principle is presented for an angular momentum\u2010resolved method to observe orbital Hall effect (OHE) in real space. The orbital conduction in the topological semimetal\n                    <jats:italic>T<\/jats:italic>\n                    <jats:sub>d<\/jats:sub>\n                    \u2010WTe\n                    <jats:sub>2<\/jats:sub>\n                    is measured using contact\u2010free polarimetric terahertz probe, showing that two distinct regions of \u00b1L\n                    <jats:sub>z<\/jats:sub>\n                    with a diffusion length of \u2248130\u00a0\u00b5m due to the extremely low scattering rate of Weyl fermions form in real space. The observed orbital conduction can be explained by OHE, according to theoretical calculations. By altering the polarization and intensity of the terahertz electric field input, it is also demonstrated that this orbital conduction can be engineered. Using a spatiotemporal low\u2010energy electrodynamic probe, the work reveals direct evidence of coherent OHE in an inversion\u2010broken topological semimetal with strong spin\u2010orbit coupling\u2014an experimentally elusive regime until now.\n                  <\/jats:p>","DOI":"10.1002\/adma.202503808","type":"journal-article","created":{"date-parts":[[2025,10,9]],"date-time":"2025-10-09T05:00:31Z","timestamp":1759986031000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":1,"title":["Spatiotemporally Resolved Orbital Hall Effect in a Topological Semimetal"],"prefix":"10.1002","volume":"38","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-5309-0685","authenticated-orcid":false,"given":"Byung Cheol","family":"Park","sequence":"first","affiliation":[{"name":"Center for Integrated Nanostructure Physics Institute for Basic Science(IBS) Sungkyunkwan University (SKKU)  Suwon 16419 Republic of Korea"},{"name":"Center for 2D Quantum Heterostructures Institute for Basic Science (IBS)  Suwon 16419 Republic of Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Taewoo","family":"Ha","sequence":"additional","affiliation":[{"name":"Center for Integrated Nanostructure Physics Institute for Basic Science(IBS) Sungkyunkwan University (SKKU)  Suwon 16419 Republic of Korea"},{"name":"Center for 2D Quantum Heterostructures Institute for Basic Science (IBS)  Suwon 16419 Republic of Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Hojun","family":"Lee","sequence":"additional","affiliation":[{"name":"Department of Physics Pohang University of Science and Technology  Pohang 37673 Republic of Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Kyung Ik","family":"Sim","sequence":"additional","affiliation":[{"name":"Center for Integrated Nanostructure Physics Institute for Basic Science(IBS) Sungkyunkwan University (SKKU)  Suwon 16419 Republic of Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Insu","family":"Baek","sequence":"additional","affiliation":[{"name":"Department of Physics Pohang University of Science and Technology  Pohang 37673 Republic of Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Seok Joon","family":"Yun","sequence":"additional","affiliation":[{"name":"Center for Integrated Nanostructure Physics Institute for Basic Science(IBS) Sungkyunkwan University (SKKU)  Suwon 16419 Republic of Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Kyujoon","family":"Lee","sequence":"additional","affiliation":[{"name":"Division of Display and Semiconductor Physics Korea University  Sejong 30019 Republic of Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Hyun\u2010Woo","family":"Lee","sequence":"additional","affiliation":[{"name":"Department of Physics Pohang University of Science and Technology  Pohang 37673 Republic of Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Young Hee","family":"Lee","sequence":"additional","affiliation":[{"name":"Center for Integrated Nanostructure Physics Institute for Basic Science(IBS) Sungkyunkwan University (SKKU)  Suwon 16419 Republic of Korea"},{"name":"Center for Low\u2010Dimensional Quantum Materials Hubei University of Technology  Wuhan 430062 P. R. China"},{"name":"School of Materials Science and Engineering Peking University  Beijing 100871 P. R. China"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2025,10,8]]},"reference":[{"key":"e_1_2_9_1_1","volume-title":"Solid State Physics","author":"Ashcroft N. 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