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Phys.: Condens. Matter"],"published-print":{"date-parts":[[2026,10,16]]},"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:p>\n                    Altermagnetic materials with high-performance multipiezo effect have attracted tremendous attention for their potential applications in information storage and logic operations. Here, we propose an altermagnetic monolayer Ti\n                    <jats:sub>2<\/jats:sub>\n                    ClIO with excellent dynamic, thermal, and mechanical stabilities. The monolayer Ti\n                    <jats:sub>2<\/jats:sub>\n                    ClIO presents zero net magnetization with an easy\n                    <jats:italic>xy<\/jats:italic>\n                    -plane. Moreover, it is a semiconductor with a direct band gap of 792 meV. The band structure shows a pronounced spin splitting of 914\/811 meV for the valence\/conduction band. Interestingly, a reversible valley polarization as high as 293 meV is induced in monolayer Ti\n                    <jats:sub>2<\/jats:sub>\n                    ClIO by applying a uniaxial strain, resulting in the piezovalley effect. Moreover, an out-of-plane piezoelectricity emerges in the present monolayer Ti\n                    <jats:sub>2<\/jats:sub>\n                    ClIO due to the broken horizontal mirror symmetry, showing the piezoelectric behavior with a strain coefficient of \u22120.03 pm V\n                    <jats:sup>\u22121<\/jats:sup>\n                    . This study unveils a promising candidate for developing multifunctional electronic devices.\n                  <\/jats:p>","DOI":"10.1088\/1361-648x\/aeb05b","type":"journal-article","created":{"date-parts":[[2026,10,5]],"date-time":"2026-10-05T22:51:18Z","timestamp":1791240678000},"page":"415802","update-policy":"https:\/\/doi.org\/10.1088\/crossmark-policy","source":"Crossref","is-referenced-by-count":0,"title":["Piezovalley and piezoelectric altermagnetism in a 2D Ti\n                    <sub>2<\/sub>\n                    ClIO semiconductor"],"prefix":"10.1088","volume":"38","author":[{"ORCID":"https:\/\/orcid.org\/0009-0002-2902-9918","authenticated-orcid":true,"given":"Qihang","family":"Qiu","sequence":"first","affiliation":[{"name":"Northeastern University"}],"role":[{"vocabulary":"crossref","role":"author"},{"role":"formal-analysis","vocabulary":"credit"},{"role":"validation","vocabulary":"credit"},{"role":"writing-original-draft","vocabulary":"credit"},{"role":"writing-review-editing","vocabulary":"credit"}]},{"given":"Li","family":"Deng","sequence":"additional","affiliation":[{"name":"Northeastern University"}],"role":[{"vocabulary":"crossref","role":"author"},{"role":"formal-analysis","vocabulary":"credit"},{"role":"validation","vocabulary":"credit"}]},{"given":"Xiang","family":"Yin","sequence":"additional","affiliation":[{"name":"Northeastern University"}],"role":[{"vocabulary":"crossref","role":"author"},{"role":"formal-analysis","vocabulary":"credit"},{"role":"validation","vocabulary":"credit"}]},{"ORCID":"https:\/\/orcid.org\/0009-0003-4449-3791","authenticated-orcid":true,"given":"Yuntian","family":"Bai","sequence":"additional","affiliation":[{"name":"Northeastern University"}],"role":[{"vocabulary":"crossref","role":"author"},{"role":"formal-analysis","vocabulary":"credit"},{"role":"validation","vocabulary":"credit"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-2076-8730","authenticated-orcid":true,"given":"Xianmin","family":"Zhang","sequence":"additional","affiliation":[{"name":"Northeastern University"}],"role":[{"vocabulary":"crossref","role":"author"},{"role":"conceptualization","vocabulary":"credit"},{"role":"formal-analysis","vocabulary":"credit"},{"role":"funding-acquisition","vocabulary":"credit"},{"role":"methodology","vocabulary":"credit"},{"role":"software","vocabulary":"credit"},{"role":"supervision","vocabulary":"credit"},{"role":"validation","vocabulary":"credit"},{"role":"writing-original-draft","vocabulary":"credit"},{"role":"writing-review-editing","vocabulary":"credit"}]}],"member":"266","published-online":{"date-parts":[[2026,10,20]]},"reference":[{"key":"cmaeb05bbib1","doi-asserted-by":"publisher","DOI":"10.1103\/PhysRevX.12.040501","type":"journal-article","volume":"12","author":"\u0160mejkal","year":"2022","journal-title":"Phys. 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