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مقاله پژوهشی: اثر وارون اسپین هال و اثر "سیبک" اسپین در دی سولفید تنگستن | ||
| فیزیک کاربردی ایران | ||
| دوره 12، شماره 4 - شماره پیاپی 31، دی 1401، صفحه 43-61 اصل مقاله (2.08 M) | ||
| نوع مقاله: مقاله پژوهشی | ||
| شناسه دیجیتال (DOI): 10.22051/ijap.2022.40141.1276 | ||
| نویسندگان | ||
| فرشید نورعلیشاهی1؛ محمد کاظم سالم* 2؛ محمدرضا تنهایی اهری3 | ||
| 1دانشجوی دکترا، مرکز تحقیقات پلاسما، دانشگاه آزاد اسلامی واحد علوم و تحقیقات، تهران، ایران | ||
| 2دانشیار، مرکز تحقیقات پلاسما، دانشگاه آزاد اسلامی واحد علوم و تحقیقات، تهران، ایران | ||
| 3استاد، گروه فیزیک، دانشکده علوم پایه، واحد تهران مرکز، دانشگاه آزاد اسلامی، تهران، ایران | ||
| چکیده | ||
| در این مقاله، وابستگی اثر پمپاژ اسپین به لایهای از دی سولفید تنگستن (WS2) با استفاده از اثر وارون اسپین هال (ISHE) بررسی شده است. حرکت تقدیمی بردار مغناطش، اثر پمپاژ اسپین در یک فیلم نارسانای فری مغناطیسی ایجاد میکند. سپس جریانی از الکترونها با اسپین قطبی شده به لایهی NM از یک ماده غیرمغناطیسی، چون پلاتین (Pt)، تزریق میشود. این جریان اسپین با استفاده از روشISHE به جریان الکتریکی تبدیل میشود. در کار حاضر، کارایی تزریق اسپین به دی سولفید تنگستن (WS2) بررسی و دریافت شد که با افزایش ضخامت فیلم، ولتاژ ISHE نیز افزایش می‌یابد، سپس این رابطه با نظریه مقایسه شد. در مرحله بعد، طول نفوذ اسپین و رسانایی مخلوط اسپین از تغییر ضریب میرایی گیلبرت با ضخامت به دست آمد. با توجه به اطلاعات بدست آمده، بررسیهای مشابهی در موادی چون؛ ایتریوم- آهن- گارنت یا آلیاژ Mo1-xWxS2 انجام شده است. اگرچه در مورد دیسولفید تنگستن بررسیها صورت نگرفته است. لازم به یادآوری است که مطالعاتی چون بررسی اثر جفت شدگی اسپین- مدار، بررسی پراکندگی ریمان مرتبه دوم و همچون آن در مورد دی سولفید تنگستن انجام شده است و همچنان ادامه دارد. امیدواریم کار حاضر بتواند راهنمای مناسبی برای توسعه مطالعات بیشتر دراین زمینه باشد. | ||
| کلیدواژه‌ها | ||
| اثر هال وارون؛ پمپاژ اسپین؛ میرایی گیلبرت؛ امواج اسپین؛ دی سولفید تنگستن | ||
| عنوان مقاله [English] | ||
| Research Paper: Inverse Spin Hall Effect and Spin Seebeck Effect in Tungsten Disulfide | ||
| نویسندگان [English] | ||
| Farshid Nooralishahi1؛ Mohammad Kazem Salem2؛ Mohammad Reza Tanhayi3 | ||
| 1PhD Stuedent, Plasma Physics Research Center, Science, and Research Branch, Islamic Azad University, Tehran, Iran | ||
| 2Associate Professor, Plasma Physics Research Center, Science, and Research Branch Islamic Azad University, Tehran, Iran | ||
| 3Professor, Central Tehran Branch, Islamic Azad University, Tehran, Iran | ||
| چکیده [English] | ||
| In this paper, the dependence of the spin pumping effect on a layer of tungsten disulfide (WS2) by the inverse Hall spin effect (ISHE) is investigated. The precession motion of the magnetization vector creates the effect of spin pumping on a non-conductive ferrimagnetic film. A stream of polarized spin electrons is then injected into the NM layer of a non-magnetic material such as Pt. This spin current is converted to electric current by the ISHE. We investigated the efficiency of spin injection into tungsten disulfide WS and found that as the film thickness increased, the ISHE voltage also increased and compared this relationship with the theory. Next, we obtained the spin diffusion length and conductivity of the spin mixture by varying the damping coefficient of Gilbert with thickness. As far as we know, similar studies have been performed here on materials such as yttrium-iron-garnet or Mo1-xWxS2 alloy, but not on tungsten disulfide. Studies such as the effect of spin-orbit coupling, the study of second-order Riemann scattering, and the like, have been performed on tungsten disulfide and are still ongoing. We hope this will guide for the development of further studies in this field. | ||
| کلیدواژه‌ها [English] | ||
| The Inverse Hall Spin Effect (ISHE), Spin Pumping, Gilbert Damping, Spin Waves, Tungsten Disulfide | ||
| مراجع | ||
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