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任之博士

     Zhi Ren, Ph. D. 

 

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“期待高研院能始终把握正确方向,尽快建成具有中国特色的世界一流研究机构。”


       一、个人简介

任之(1982-),湖北黄陂人。1999年进入浙江大学,2004年毕业获学士学位,2009年获凝聚态物理博士学位。随后在日本大阪大学(2009.7-2012.12)和瑞士日内瓦大学(2013.4-2016.12)进行博士后研究。现为西湖大学理学院、浙江西湖高等研究院理学研究所特聘研究员。

 

       二、学术成果

致力于探索当下凝聚态物理前沿课题感兴趣的块体材料,并通过化学掺杂或施加物理压力来改变其基态性质,以期实现对新奇量子态的宏观调控。主要成果包括(i)在化学掺杂寻找新的铁基超导体方面,首次发现同价态元素替换引入超导并观察到超导与铁磁共存;(ii) 在铋系拓扑绝缘体方面,通过系统改变化学组分极大降低体载流子浓度并成功观测到拓扑金属表面态的量子振荡; (iii) 在铈基重费米子方面,利用国际领先的高压极低温技术发现了新的压力诱导的重费米子超导体,并首次观测到超导转变与磁有序温度随压力增加同时升高的现象。共发表论文45篇,总计被引用超过3300次。部分论文被Nature Physics News and Views, NPG Asia Materials, 和APS Physics以亮点进行报道。作为团队成员获得2012年教育部高等学校自然科学一等奖。

 

三、代表论文

1. Zhi Ren, L. V. Pourovskii, G. Giriat, G. Lapertot, A. Georges, and D. Jaccard  “Giant Overlap between the Magnetic and Superconducting Phases of CeAu2Si2  under Pressure”, Physical Review X 4, 031055 (2014). 

2. Satoshi Sasaki, Zhi Ren, A. A. Taskin, Kouji Segawa, Liang Fu and Yoichi Ando  “Odd-Parity Pairing and Topological Superconductivity in a Strongly Spin-Orbit Coupled Semiconductor”, Phys. Rev. Lett. 109, 217004 (2012). 

3. Y. Tanaka, Zhi Ren, T. Sato, K. Nakayma, S. Souma, T. Takahashi, Kouji Segawa and Yoichi Ando “Experimental realization of a topological crystalline insulator SnTe”,Nat. Phys. 8, 800 (2012).See also accompanying News and Views: The great topological expansion.

4. T. Arakane,T. Sato, S. Souma, K. Kosaka, K. Nakayama, M. Komatsu, T.Takahashi, Zhi Ren, Kouji Segawa, and Yoichi Ando, “Tunable Dirac cone in the topological insulator Bi2-xSbxTe3-ySey”,Nat. Commun. 3, 636 (2012). 

5. Zhi Ren, A. A. Taskin, S. Sasaki, K. Segawa, and Y. Ando,  “Optimizing Bi2-xSbxTe3-ySey solid solutions to approach the intrinsic topological insulator regime”,Phys. Rev. B 84, 65311 (2011). (Editors’ Suggestion) See also accompanying Physics Synopsis: Optimizing topological insulators.

6. A. A. Taskin, Zhi Ren, S. Sasaki, K. Segewa and Y. Ando, “Observation of Dirac Holes and Electrons in a Topological Insulator”,Phys. Rev. Lett. 107, 016801(2011).  

7. Zhi Ren, A. A. Taskin, S. Sasaki, K. Segawa, and Y. Ando, “Large bulk resistivity and surface quantum oscillations in the topological insulator Bi2Te2Se”,Phys. Rev. B 82 (R), 075316 (2010). (Editors’ Suggestion)  See also accompanying Physics Synopsis: Insulating behavior in topological insulators. 

8. Zhi Ren, Qian Tao, Shuai Jiang, Chunmu Feng, Cao Wang, Jianhua Dai, Guang-han Cao, and Zhu’an Xu, “Superconductivity Induced By Phosphorus Doping and Its Coexistence with Ferromagnetism in EuFe2(As0.7P0.3)2   ”,Phys. Rev. Lett. 102, 137002 (2009). See also Featured highlight in NPG Asia Materials: Iron-pnictides: Superconductivity meets ferromagnetism.

 

四、联系方式

      电子邮箱:renzhi@westlake.edu.cn