{"title":"Cryogenic Ferroelectricity of HZO Capacitors on a III–V Semiconductor","authors":"Mamidala Karthik Ram;Hannes Dahlberg;Lars-Erik Wernersson","doi":"10.1109/LED.2024.3448378","DOIUrl":null,"url":null,"abstract":"Non-volatile cryogenic memories are crucial for realizing energy-efficient and scaled quantum computing systems. In this letter, we evaluate the cryogenic performance of an HZO-based ferroelectric capacitor (FeCAP) with a compound semiconductor (InAs) as the bottom electrode. We demonstrate that near identical remnant polarization can be obtained at 14 K compared to room temperature by increasing the voltage during the wake-up process. The switching dynamics of the FeCAP are studied at temperatures as low as 50 K with measured data analyzed by the nucleation-limited switching model. These results together with the increased endurance at cryogenic temperatures present promising opportunities for cryogenic ferroelectrics.","PeriodicalId":13198,"journal":{"name":"IEEE Electron Device Letters","volume":null,"pages":null},"PeriodicalIF":4.1000,"publicationDate":"2024-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"IEEE Electron Device Letters","FirstCategoryId":"5","ListUrlMain":"https://ieeexplore.ieee.org/document/10643591/","RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"ENGINEERING, ELECTRICAL & ELECTRONIC","Score":null,"Total":0}
引用次数: 0
Abstract
Non-volatile cryogenic memories are crucial for realizing energy-efficient and scaled quantum computing systems. In this letter, we evaluate the cryogenic performance of an HZO-based ferroelectric capacitor (FeCAP) with a compound semiconductor (InAs) as the bottom electrode. We demonstrate that near identical remnant polarization can be obtained at 14 K compared to room temperature by increasing the voltage during the wake-up process. The switching dynamics of the FeCAP are studied at temperatures as low as 50 K with measured data analyzed by the nucleation-limited switching model. These results together with the increased endurance at cryogenic temperatures present promising opportunities for cryogenic ferroelectrics.
期刊介绍:
IEEE Electron Device Letters publishes original and significant contributions relating to the theory, modeling, design, performance and reliability of electron and ion integrated circuit devices and interconnects, involving insulators, metals, organic materials, micro-plasmas, semiconductors, quantum-effect structures, vacuum devices, and emerging materials with applications in bioelectronics, biomedical electronics, computation, communications, displays, microelectromechanics, imaging, micro-actuators, nanoelectronics, optoelectronics, photovoltaics, power ICs and micro-sensors.