RETRACTED ARTICLE: Room-temperature superconductivity in a carbonaceous sulfur hydride

硫黄 氢化物 化学 无机化学
作者
Elliot Snider,Nathan Dasenbrock-Gammon,Raymond McBride,M. Debessai,Hiranya Vindana,Kevin Vencatasamy,Keith V. Lawler,Ashkan Salamat,Ranga Dias
出处
期刊:Nature [Nature Portfolio]
卷期号:586 (7829): 373-377 被引量:469
标识
DOI:10.1038/s41586-020-2801-z
摘要

One of the long-standing challenges in experimental physics is the observation of room-temperature superconductivity1,2. Recently, high-temperature conventional superconductivity in hydrogen-rich materials has been reported in several systems under high pressure3–5. An  important discovery leading to room-temperature superconductivity is the pressure-driven disproportionation of hydrogen sulfide (H2S) to H3S, with a confirmed transition temperature of 203 kelvin at 155 gigapascals3,6. Both H2S and CH4 readily mix with hydrogen to form guest–host structures at lower pressures7, and are of  comparable size at 4 gigapascals. By introducing methane at low pressures into the H2S + H2 precursor mixture for H3S, molecular exchange is allowed within a large assemblage of van der Waals solids that are hydrogen-rich with H2 inclusions; these guest–host structures become the building blocks of superconducting compounds at extreme conditions. Here we report superconductivity in a photochemically transformed carbonaceous sulfur hydride system, starting from elemental precursors, with a maximum superconducting transition temperature of 287.7 ± 1.2 kelvin (about 15 degrees Celsius) achieved at 267 ± 10 gigapascals. The superconducting state is observed over a broad pressure range in the diamond anvil cell, from 140 to 275 gigapascals, with a sharp upturn in transition temperature above 220 gigapascals. Superconductivity is established by the observation of zero resistance, a magnetic susceptibility of up to 190 gigapascals, and reduction of the transition temperature under an external magnetic field of up to 9 tesla, with an upper critical magnetic field of about 62 tesla according to the Ginzburg–Landau model at zero temperature. The light, quantum nature of hydrogen limits the structural and stoichiometric determination of the system by X-ray scattering techniques, but Raman spectroscopy is used to probe the chemical and structural transformations before metallization. The introduction of chemical tuning within our ternary system could enable the preservation of the properties of room-temperature superconductivity at lower pressures. Room-temperature superconductivity is observed in a photochemically synthesized ternary carbonaceous sulfur hydride system at 15 °C and 267 GPa.
最长约 10秒,即可获得该文献文件

科研通智能强力驱动
Strongly Powered by AbleSci AI
更新
PDF的下载单位、IP信息已删除 (2025-6-4)

科研通是完全免费的文献互助平台,具备全网最快的应助速度,最高的求助完成率。 对每一个文献求助,科研通都将尽心尽力,给求助人一个满意的交代。
实时播报
大模型应助清风采纳,获得10
刚刚
刚刚
顺利夏之完成签到 ,获得积分10
1秒前
quququ发布了新的文献求助10
1秒前
hzh完成签到,获得积分20
1秒前
宗铁强发布了新的文献求助30
2秒前
eric发布了新的文献求助30
2秒前
3秒前
orixero应助大方弘文采纳,获得10
3秒前
小五关注了科研通微信公众号
3秒前
wanci应助李可汗采纳,获得10
3秒前
搜集达人应助Sene采纳,获得20
4秒前
4秒前
优雅狗发布了新的文献求助200
5秒前
陆千万发布了新的文献求助10
5秒前
yuzhang312发布了新的文献求助10
5秒前
补药学习完成签到,获得积分10
5秒前
shinn发布了新的文献求助10
7秒前
可爱的函函应助欧子采纳,获得10
8秒前
冷艳薯片完成签到,获得积分10
8秒前
bin完成签到,获得积分10
9秒前
漂亮豆芽完成签到,获得积分10
9秒前
9秒前
longyuzhu发布了新的文献求助10
10秒前
冬去春来发布了新的文献求助10
10秒前
Sherry完成签到,获得积分10
10秒前
11秒前
12秒前
在水一方应助很大一个渊采纳,获得10
12秒前
13秒前
CipherSage应助笔墨留香采纳,获得10
13秒前
简单的冰真完成签到,获得积分10
13秒前
单于思雁发布了新的文献求助10
14秒前
14秒前
hkh完成签到 ,获得积分20
14秒前
克林沙星完成签到,获得积分10
14秒前
orixero应助freeway采纳,获得10
15秒前
handsomecat完成签到,获得积分10
15秒前
16秒前
16秒前
高分求助中
Picture Books with Same-sex Parented Families: Unintentional Censorship 700
ACSM’s Guidelines for Exercise Testing and Prescription, 12th edition 500
Nucleophilic substitution in azasydnone-modified dinitroanisoles 500
不知道标题是什么 500
Indomethacinのヒトにおける経皮吸収 400
Phylogenetic study of the order Polydesmida (Myriapoda: Diplopoda) 370
Effective Learning and Mental Wellbeing 300
热门求助领域 (近24小时)
化学 材料科学 医学 生物 工程类 有机化学 生物化学 物理 内科学 纳米技术 计算机科学 化学工程 复合材料 遗传学 基因 物理化学 催化作用 冶金 细胞生物学 免疫学
热门帖子
关注 科研通微信公众号,转发送积分 3975250
求助须知:如何正确求助?哪些是违规求助? 3519625
关于积分的说明 11199055
捐赠科研通 3255962
什么是DOI,文献DOI怎么找? 1798001
邀请新用户注册赠送积分活动 877358
科研通“疑难数据库(出版商)”最低求助积分说明 806298