{"title":"Voltage-Induced Hysteretic Resistance in Nematic Order of SmFeAsO","authors":"Zhiyue Li, Wanshun Du, Lingzhe Liao, Ziqing Sun, Zhuorui Zhang, Tianyue Wen, Zhekai Zhang, Wei Tao, Tingyong Chen","doi":"10.1002/agt2.70098","DOIUrl":null,"url":null,"abstract":"<p>Point-contact spectroscopy has been utilized to study SmFeAsO, the parent compound of the “1111” iron superconductors. A bias voltage drives the point contact through antiferromagnetic and structural transitions via the ballistic Joule heating effect. Surprisingly, the bias voltage also induces a hysteretic conductance only in the temperature range of the nematic order, while there is no such behavior in the temperature-dependent resistance. The larger the maximum bias voltage, the bigger the conductance changes in the hysteresis, but always exclusively in the nematic order regime. The voltage-driven conductance hysteresis, which is not affected by a magnetic field of 5 T, suggests the nematic order in the SmFeAsO sample may be from an electronic origin and can be controlled by a voltage.</p>","PeriodicalId":72127,"journal":{"name":"Aggregate (Hoboken, N.J.)","volume":"6 9","pages":""},"PeriodicalIF":13.7000,"publicationDate":"2025-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/agt2.70098","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Aggregate (Hoboken, N.J.)","FirstCategoryId":"1085","ListUrlMain":"https://onlinelibrary.wiley.com/doi/10.1002/agt2.70098","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CHEMISTRY, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 0
Abstract
Point-contact spectroscopy has been utilized to study SmFeAsO, the parent compound of the “1111” iron superconductors. A bias voltage drives the point contact through antiferromagnetic and structural transitions via the ballistic Joule heating effect. Surprisingly, the bias voltage also induces a hysteretic conductance only in the temperature range of the nematic order, while there is no such behavior in the temperature-dependent resistance. The larger the maximum bias voltage, the bigger the conductance changes in the hysteresis, but always exclusively in the nematic order regime. The voltage-driven conductance hysteresis, which is not affected by a magnetic field of 5 T, suggests the nematic order in the SmFeAsO sample may be from an electronic origin and can be controlled by a voltage.
求助内容：
应助结果提醒方式：
京公网安备 11010802042870号
