{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,23]],"date-time":"2026-10-23T21:12:23Z","timestamp":1792789943338,"version":"4.5.0"},"reference-count":42,"publisher":"MDPI AG","issue":"19","license":[{"start":{"date-parts":[[2026,9,29]],"date-time":"2026-09-29T00:00:00Z","timestamp":1790640000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"National Natural Science Foundation of China","award":["62327812"],"award-info":[{"award-number":["62327812"]}],"id":[{"id":"https:\/\/ror.org\/01h0zpd94","id-type":"ROR","asserted-by":"crossref"}]},{"name":"National Natural Science Foundation of China","award":["62574001"],"award-info":[{"award-number":["62574001"]}],"id":[{"id":"https:\/\/ror.org\/01h0zpd94","id-type":"ROR","asserted-by":"crossref"}]},{"name":"National Natural Science Foundation of China","award":["12304162"],"award-info":[{"award-number":["12304162"]}],"id":[{"id":"https:\/\/ror.org\/01h0zpd94","id-type":"ROR","asserted-by":"crossref"}]},{"award":["62327812"],"award-info":[{"award-number":["62327812"]}],"id":[{"id":"https:\/\/ror.org\/01h0zpd94","id-type":"ROR","asserted-by":"publisher"}]},{"award":["62574001"],"award-info":[{"award-number":["62574001"]}],"id":[{"id":"https:\/\/ror.org\/01h0zpd94","id-type":"ROR","asserted-by":"publisher"}]},{"award":["12304162"],"award-info":[{"award-number":["12304162"]}],"id":[{"id":"https:\/\/ror.org\/01h0zpd94","id-type":"ROR","asserted-by":"publisher"}]},{"name":"Key Project of the Natural Science Basic Research Program of Shaanxi Province","award":["2025JC-JCQN-064"],"award-info":[{"award-number":["2025JC-JCQN-064"]}]},{"name":"Key Project of the Natural Science Basic Research Program of Shaanxi Province","award":["2026JC-QYCX-084"],"award-info":[{"award-number":["2026JC-QYCX-084"]}]},{"name":"\u201cYoung Science and Technology Star\u201d Project of Shaanxi Province","award":["2025ZC-KJXX-37"],"award-info":[{"award-number":["2025ZC-KJXX-37"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Nanomaterials"],"abstract":"<jats:p>Negative photoconductivity (NPC) in low-dimensional materials has attracted considerable interest for its potential in novel optoelectronic devices. Here, we report an ultra-broadband NPC response in FePd2Te2, a van der Waals ferromagnet, spanning from visible to long-wavelength infrared at room temperature. The device achieves a responsivity of ~4.9 A\/W and external quantum efficiency of ~240% at 2500 nm, with a noise-equivalent power (NEP) below 3.0 \u00d7 10\u221215 W\/Hz1\/2 and a specific detectivity (D*) exceeding 3.6 \u00d7 1011 cmHz1\/2\/W across the infrared range. Systematic measurements identify the photobolometric effect as the underlying mechanism, wherein wavelength-dependent absorption depths play a key role in shaping the photoresponse characteristics. These results establish FePd2Te2 as a promising platform for uncooled broadband infrared detection and highlight the potential of magnetic van der Waals materials for future optoelectronics.<\/jats:p>","DOI":"10.3390\/nano16191228","type":"journal-article","created":{"date-parts":[[2026,9,29]],"date-time":"2026-09-29T09:10:54Z","timestamp":1790673054000},"page":"1228","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":1,"title":["Ultra-Broadband Negative Photoconductivity in a Van der Waals Ferromagnetic Metal FePd2Te2"],"prefix":"10.3390","volume":"16","author":[{"given":"Kang","family":"Zhang","sequence":"first","affiliation":[{"name":"State Key Laboratory of Opto-Electronic Information Acquisition and Protection Technology, Institutes of Physical Science and Information Technology, Anhui University, Hefei 230601, 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